Marathon series corrosion resistant mounted products and...

Marathon® series corrosion resistant mounted products and bearing units

Contents

1 Introduction

8 Compositeunits

22 Stainlesssteeltake-upframes

24 ZMaRC®-coatedcastironunits

28 Caststainlesssteelunits

32 ZMaRC-coatedinsertbearings

33 Stainlesssteelinsertbearings

34 Submersibleplanebearingunits

35 Hi-tempplanebearingunits

36 Hi-tempballbearingunits

37 Made-To-Orderproducts

38 Nomenclature

38 Tolerancesanddimensionaldata

39 Stainlesssteelballbearings

40 Assemblyinstructions

42 Comparisoncharts

1

Few industries challenge bearings with a harsher operating environment than the food and beverage industries. Perhaps no industry works as hard to meet regulations governing contamination. When MRC® introduced the Marathon® series composite mounted bearing units, it was possibly the best solution to the problems associated with bearing failures. Since then, in addition to the composite units, our HDi—heavy-duty cast iron—and XDs—extreme-duty cast stainless steel—have been introduced to more thoroughly meet the needs of the industry.

Introduction to Marathon® series corrosion-resistant mounted products and bearing units

The HDi series combines corrosion resistance together with the strength of cast iron—without the problem of flaking nickel plating—and are priced competitively with nickel-plated versions. (See page 3 for details.) For extremely challenging applications, the XDs series provides top-of-the-line corrosion resistance and the greatest housing strength available within the Marathon line. (See page 4 for details.)

At the heart of the Marathon units are high-quality, corrosion-resistant insert bearings, available with MRC’s ZMaRC® coating or with stainless steel construc-tion. The units’ multifunction rubber seals are bonded to AISI 304 stainless steel for superior corrosion resistance, and sealed-for-life lubricants are USDA approved.

2

The Marathon series’ composite housing resists citric acids, cooking fats and most chemicals used in food and beverage pro-cessing. It is constructed of a thermoplastic composite material that can be up to 61% lighter than cast iron housings. Its spheri-cal bore accommodates the insert bearing’s spherical outer surface, enabling the unit to fully compensate for initial bearing seating misalignment. Plus, the housing is loaded with design and performance advantages:• Steel coils embedded in the housing

contribute to the housing’s fracture strength. Radial breaking load is far greater than the static load rating of the bearing. Marathon series housings have possibly the highest fracture strength of any composite unit available.

A composite housing with integrated performance featuresNowavailablewithendcovers,seepages6–7

• A nylon-filled housing base enables the unit to meet flush with its mounting sur-face. Flush surface-to-surface mounting eliminates gaps—potential areas for contaminants to collect.

• 300 series stainless steel bolt hole inserts provide added strength to each housing foot and prevent corrosion.

• Marathon series units are available in the following housing designs to meet the needs of most food and beverage processing applications: – pillow block – two- or four-bolt flange – tapped base – three-bolt bracket flange – narrow and wide slot take-up – low backing height pillow block – low profile two- and three-bolt flange – four-bolt piloted flange – hanger

Unique -2RF multiple sealing system made of FDA approved material

Insert bearing is prelubricated with NSF approved grease

Choice of zinc-coated or stainless steel insert bearing

Steel coils embedded in SKF composite housings provide additional fracture strength

Light gray polyamide composite housing resists corrosion

Stainless steel bolt hole inserts

No gaps where contaminants can collect

Polyamide cage

3

The Marathon HDi series is a corrosion-resistant, heavy-duty cast iron series of bearing units. The added strength and durability of the housings make them par-ticularly well suited for applications in red meat, pork and poultry processing facilities where both housing strength and corrosion resistance are a concern. The cast iron housings, protected with MRC’s proven ZMaRC coating, eliminate the flaking problems associated with nickel-plated products, and are matched with our ZMaRC-plated, lubed-for-life, quality insert bearings.

The HDi series provides a number of cost-saving and performance benefits. As with all Marathon products, MRC’s patented two-part stainless steel seals allow the units to operate in heavy washdown environments without regreasing. And since there is no need for relubrication, continu-ous grease purge is never a problem. Advantages of the HDi series:• Complete ZMaRC coating on all hous-

ing surfaces for long-term corrosion resistance.

• No relubrication, even in a washdown environment

ZMaRC® coated cast iron units

• Open spaces on bases and backs of housings are filled with polyurethane, eliminating areas where moisture and product can collect, for a more sanitary housing design.

• Lubed-for-life with USDA approved H1 grease.

• Two-part sealing for maximum protection Like all Marathon bearing units, Mara-thon HDi units contain an AISI 304 stain-less steel inner seal and outer seal. These components work in tandem to form an extremely effective sealing system. (See page 5 for more details.) The HDi series is available in the

following housing designs: – pillow block – two- or four-bolt flange – tapped base

4

Extremely challenging applications require an extremely durable unit—the XDs units. These housings are AISI 300 series cast stainless steel with MRC’s proven stainless steel insert bearings. The extra strength and toughness of the cast stainless housings are beneficial where loads are very heavy or where shock loads are possible. Also, the safety factor inherent in the cast steel housing is desirable in applications where housing failure could result in injury. While composite and plated housings are resistant to most of the chemicals in use today, these stainless units are not affected by the strong concentrations of chlorine, hydrogen peroxide and other chemicals sometimes used in washdown procedures The XDs cast stainless housings were designed especially for use in food and beverage applications. The bases have no

Marathon XDs unit— MRC’s top-of-the-line units

recesses to trap debris and bacteria; the exposed surfaces of the housings have no unnecessary crevices or pockets; and the smooth finish minimizes material trapped on the surface allowing a more thorough cleaning. Like the other members of the Marathon family, the XDs series incorporates the proven insert bearing design and patented sealing arrangement (see page 5), and are also greased for life and maintenance free. Housing styles available include:

– pillow block – two- and four-bolt flange – tapped base

MRCXDsextremedutymachinedstainlesssteelmountedunitsMRC can also offer additional housing styles in machined stainless steel. Made of AISI 300 series stainless steel, these units are machined from solid stainless steel plate rather than cast. These are especially suited for applications where surface roughness is critical, such as instances where chronic bacterial problems have existed. As with the cast housings, there are no unnecessary recesses or cavities to trap debris. And like the cast stainless units, MRC’s excellent stainless steel insert bearings are used.

5

The Marathon units’ high quality insert bearings are available with MRC’s proprie-tary ZMaRC coating on the inner and outer rings. ZMaRC resists frequent washdowns with water and with acidic and caustic solutions far better than conventional insert bearings and conventional coatings, such as black oxide. That means greater protec-tion against rust, greater protection against contaminant-related bearing failure and greater assurance that your equipment will pass USDA inspections. If you prefer stainless steel, MRC will supply the Marathon series with AISI 420C stainless inner and outer rings and balls. The insert bearing’s stainless steel set-screws, positioned 120 degrees apart, minimize inner ring distortion while main-taining good gripping strength.

MarathoncompositeunitswithZMaRC-coatedbearinginsertsarealsoavailablefromstockwitheccentriclockingcollarmounting.Eccentric locking collars provide a nearly 360-degree shaft contact for reduced slippage and improved mounting integrity. The eccentric locking collar mounting is primarily intended for use in applications where the direction of rotation is constant. This alternative to setscrew mounting also makes bearing removal easier by providing access to the setscrew dimple created on the shaft surface during the initial mount-ing procedure. The mechanic is then able to file down the raised edges around the dimple in order to easily slide the bearing off the shaft. Other Marathon style units with ZMaRC inserts can be ordered with the eccentric locking collar through our Made-to-Order program.

Insert bearings

Stainlesssteelsealingarrangement

A double-protection seal keeps the Mara-thon units running contaminant free. The sealing arrange-ment consists of a double-lip, AISI 304 stainless steel inte-

gral seal, an AISI 304 stainless steel flinger and a rubber-backed seal gasket. The flinger and seal’s low-friction rubber lips, with optimized axial contact, form a double barrier against pollutants and washdowns. The seal gasket prevents contaminants from migrating around the seal insert’s O.D., and the flinger adds mechanical and centrifugal protection against contaminant entry. The space between the insert seal and flinger is filled with USDA food-grade grease for even greater sealing efficiency.

USDA-approvedgreaseMarathon units are prelubricated-for-life with USDA H1-approved grease. The high quality synthetic grease is odorless and tasteless, and is approved for use in all food processing industries. Other Marathon mounted bearing unit grease benefits:• Excellent internal and external bearing

corrosion protection.• High aging resistance for extended

lubricant life.• High load carrying capacity, which helps

prevent premature bearing wear.

ZMaRC-coated insert bearing

Stainless steel insert bearingZMaRC-coated insert bearing with eccentric locking collar

6

Securefit,operatorsafetyIf needed to comply with health and safety regulations, composite, stainless steel and cast iron zinc coated MRC Marathon units can be supplied with effective end covers. Two different cover designs are available:

• ECWM († fig. 1) for composite, cast iron zinc-coated and stainless steel MRC Marathon units

• ECLM († fig. 2) for the composite MRC Marathon units in bracket flange (CBF) and take-up (CTN, CTW) housing styles

The appropriate end cover for each Mara-thon bearing unit is listed in the product tables. Note that the end covers are not included with the bearing units and must be ordered separately. The ECWM cover has an optional drainage hole that can be easily opened by the user as required. For complete security, both ECWM and ECLM end covers are tested to withstand 100 bar pressure wash and will not dislo-cate during washing,

Fig. 1

ECWM cover

Fig. 2

ECLM cover

The ECWM end cover comes with optional drain hole

End covers

7

EndcoversThe table below shows the appropriate end cover for each bearing unit, and the distance (A5) that the end cover protrudes from the housing side († fig 3). Prior to starting the mounting procedure, make sure to use the correct end cover and check if the A5 dimension is suitable for your application arrangement.

NOTE: the end cover must be ordered separately.

Mountinginstructionsforendcovers1 Remove the end cover from its package. 2 Identify the housing end cover groove

and make sure it is clean and free of any debris.

3 Hold the cover askew against the housing and insert the cover tabs into the housing groove.

4 Push the cover towards the housing until all the tabs snap into the housing groove. Where needed, help the tabs into position by bending the cover edge slightly as required.

5 Make sure the cover is securely in place. If needed, remove the end cap and start the process again from step 3.

A5

Fig. 3

Dismountinginstructionsforendcovers1 Insert a screwdriver or a pointed tool

into the space between the housing and the dismounting protrusion located in the cover side.

2 Unlock the cover by levering it until the first end cover tabs come out from the housing groove, then complete the un-locking process by hand.

End cover something-or-other titleECWMcoversfitthesehousingstyles: ECLMcoversfitthesehousingstyles:C2F C4F CPB CTBZ2F Z4F ZPB ZTB CBF CTN CTWS2F S4F SPB STB

ShaftdiameterAppropriatedesignation CoverA5dimension(†fig4)

in. /mm Appropriatedesignation CoverA5dimension(†fig4)in. /mmin. mm

3⁄4 20 ECWM 204 1.04 / 26.5 ECLM 204 0.81 / 20.5

1 25 ECWM 205 1.04 / 26.5 ECLM 205 0.87 / 22

13⁄16 30 ECWM 206 1.22 / 31 ECLM 206 1.04 / 26.5

11⁄4 (R) ECWM 206 1.22 / 31 ECLM 206 1.04 / 26.5

11⁄4 35 ECWM 207 1.28 / 32.5 ECLM 207 1.10 / 28

13⁄8 ECWM 207 1.28 / 32.5 ECLM 207 1.10 / 28

17⁄16 ECWM 207 1.28 / 32.5 ECLM 207 1.10 / 28

11⁄2 40 ECWM 208 1.32 / 33.5 ECLM 208 1.32 / 33.5

8

CPB composite pillow block unitsZMaRC-coated insert bearingAvailable with standard set-screw mounting or

eccentric locking collar mounting

Forinchshafts3⁄4–115⁄16

Shaft Pillowblock Mass Basicradialdia designation J J double lock- loadratingd A A1 H H1 H2 Min Max L N N1 G S S1 set-screw collar dynamic C� static C0

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in in in in in in in in in in in in in in lb lb lbf lbf mm mm mm mm mm mm mm mm mm mm mm mm mm kg kg N N

3⁄4 CPBO12ZM 11⁄4 53⁄64 21⁄2 15⁄16 5⁄8 319⁄32 4 431⁄32 21⁄32 29⁄64 3⁄8 23⁄32 0.53 2 860 1 470 32 21 64 33.3 16 91.5 101.5 126 17 11.5 10 18.3 0.24 12 700 6 550515⁄16 CPB015ZM 11⁄4 7⁄8 225⁄32 17⁄16 5⁄8 329⁄32 411⁄32 59⁄32 21⁄32 29⁄64 3⁄8 25⁄32 0.65 3 150 1 750 32 22 70.5 36.5 16 99.5 110.5 134 17 11.5 10 19.8 0.29 14 000 7 8001 CPB100ZM-L* 11⁄4 7⁄8 225⁄32 17⁄16 5⁄8 329⁄32 411⁄32 59⁄32 21⁄32 29⁄64 3⁄8 25⁄32 11/16 0.62 0.74 3 150 1 750 32 22 70.5 36.5 16 99.5 110.5 134 17 11.5 10 19.8 27.0 0.28 0.33 14 000 7 80011⁄8 CPB102ZM 137⁄64 63⁄64 315⁄64 111⁄16 3⁄4 41⁄4 53⁄64 61⁄4 53⁄64 35⁄64 1⁄2 7⁄8 1.10 4 380 2 520 40 25 82 42.9 19 108 128 159 21 14 12 22.2 0.50 19 500 11 20013⁄16 CPB103ZM-L* 137⁄64 63⁄64 315⁄64 111⁄16 3⁄4 41⁄4 53⁄64 61⁄4 53⁄64 35⁄64 1⁄2 7⁄8 13/16 1.04 1.23 4 380 2 520 40 25 82 42.9 19 108 128 159 21 14 12 22.2 30.2 0.47 0.56 19 500 11 20011⁄4 CPB104ZMR 137⁄64 63⁄64 315⁄64 111⁄16 3⁄4 41⁄4 53⁄64 61⁄4 53⁄64 35⁄64 1⁄2 7⁄8 1.01 4 380 2 520 40 25 82 42.9 19 108 128 159 21 14 12 22.2 0.46 19 500 11 2011⁄4 CPB104ZM-L* 149⁄64 11⁄16 321⁄32 17⁄8 3⁄4 411⁄16 51⁄4 615⁄32 53⁄64 35⁄64 1⁄2 1 19/32 1.57 1.94 5 730 3 440 45 27 93 47.6 19 119 133 164 21 14 12 25.4 32.5 0.71 0.87 25 500 15 30017⁄16 CPB107ZM-L* 149⁄64 11⁄16 321⁄32 17⁄8 3⁄4 411⁄16 51⁄4 615⁄32 53⁄64 35⁄64 1⁄2 1 19/32 1.37 1.68 5 730 3 440 45 27 93 47.6 19 119 133 164 21 14 12 25.4 32.5 0.62 0.76 25 500 15 30011⁄2 CPB108ZM 157⁄64 13⁄16 329⁄32 115⁄16 25⁄32 55⁄64 55⁄8 657⁄64 53⁄64 35⁄64 1⁄2 13⁄16 1.98 6 900 4 270 48 30 99 49.2 20 129 143 175 21 14 12 30 0.90 30 700 19 000115⁄16 CPB115ZM-L*1 2 21⁄4 21⁄4 45⁄8 21⁄4 3⁄4 57⁄8 63⁄4 81⁄8 11⁄16 21⁄32 5⁄8 19⁄32 11/2 2.95 3.43 7 890 5 220 57.2 57.2 117.5 57.2 19.1 149.2 171.5 206.4 27 16.7 16 32.6 38.1 1.34 1.55 35 100 23 200

A1

A

Hd

H1

S

*L suffix indicates eccentric locking collar

Formetricshafts20mm-40mm

Shaft Pillowblock Mass Basicradialdia designation J J loadratingd A A1 H H1 H2 Min Max L N N1 G S1 dynamic C� static C0

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mm in in in in in in in in in in in in lb lbf lbf mm mm mm mm mm mm mm mm mm mm mm mm kg N N

20 CPB2OZM 11⁄4 53⁄64 21⁄2 15⁄16 5⁄8 319⁄32 4 431⁄32 21⁄32 29⁄64 3⁄8 23⁄32 0.53 2 860 1 470 32 21 64 33.3 16 91.5 101.5 126 17 11.5 10 18.3 0.24 12 700 6 550525 CPB25ZM 11⁄4 7⁄8 225⁄32 17⁄16 5⁄8 329⁄32 411⁄32 59⁄32 21⁄32 29⁄64 3⁄8 25⁄32 0.64 3 150 1 750 32 22 70.5 36.5 16 99.5 110.5 134 17 11.5 10 19.8 0.29 14 000 7 80030 CPB30ZM 137⁄64 63⁄64 315⁄64 111⁄16 3⁄4 41⁄4 53⁄64 61⁄4 53⁄64 35⁄64 1⁄2 7⁄8 1.08 4 380 2 520 40 25 82 42.9 19 108 128 159 21 14 12 22.2 0.49 19 500 11 20035 CPB35ZM 149⁄64 11⁄16 321⁄32 17⁄8 3⁄4 411⁄16 51⁄4 615⁄32 53⁄64 35⁄64 1⁄2 1 1.46 5 730 3 440 45 27 93 47.6 19 119 133 164 21 14 12 25.4 0.66 25 500 15 30040 CPB40ZM 157⁄64 13⁄16 329⁄32 115⁄16 25⁄32 55⁄64 55⁄8 657⁄64 53⁄64 35⁄64 1⁄2 13⁄16 1.90 6 900 4 270 48 30 99 49.2 20 129 143 175 21 14 12 30 0.86 30 700 19 000

MRC Marathon series composite mounted bearing units are greased and sealed for life. MRC does not recommend regreasing. If required, units with relubrication fittings are available for your application. Adding a “G” suffix to the part number denotes a regreasable unit.1 Cast polymer housing. No steel coils.2 Check with MRC for availability.� Capacities listed are for the insert bearing only and do not reflect the capacity of the housing. If the application loads exceed 80% of the

static capacity (Co), MRC Applications Engineering should be consulted for a design review.

A

A1

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H1

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9

MRC Marathon series composite mounted bearing units are greased and sealed for life. MRC does not recommend regreasing. If required, units with relubrication fittings are available for your application. Adding a “G” suffix to the part number denotes a regreasable unit.1 Cast polymer housing. No steel coils.2 Check with MRC for availability.� Capacities listed are for the insert bearing only and do not reflect the capacity of the housing. If the application loads exceed 80% of the


CPB composite pillow block unitsStainless steel insert bearing



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in in in in in in in in in in in in in lb lbf lbf mm mm mm mm mm mm mm mm mm mm mm mm kg N N

3⁄4 CPBO12SS 11⁄4 53⁄64 21⁄2 15⁄16 5⁄8 319⁄32 4 431⁄32 21⁄32 29⁄64 3⁄8 23⁄32 0.53 2 430 1 470 32 21 64 33.3 16 91.5 101.5 126 17 11.5 10 18.3 0.24 10 800 6 5501 CPB1OOSS 11⁄4 7⁄8 225⁄32 17⁄16 5⁄8 329⁄32 411⁄32 59⁄32 21⁄32 29⁄64 3⁄8 25⁄32 0.62 2 670 1 750 32 22 70.5 36.5 16 99.5 110.5 134 17 11.5 10 19.8 0.28 11 900 7 80013⁄16 CPB103SS 137⁄64 63⁄64 315⁄64 111⁄16 3⁄4 41⁄4 53⁄64 61⁄4 53⁄64 35⁄64 1⁄2 7⁄8 1.04 3 660 2 520 40 25 82 42.9 19 108 128 159 21 14 12 22.2 0.47 16 300 11 20011⁄4 CPB104SSR 137⁄64 63⁄64 315⁄64 111⁄16 3⁄4 41⁄4 53⁄64 61⁄4 53⁄64 35⁄64 1⁄2 7⁄8 1.04 3 660 2 520 40 25 82 42.9 19 108 128 159 21 14 12 22.2 0.47 16 300 11 20011⁄4 CPB104SS 149⁄64 11⁄16 321⁄32 17⁄8 3⁄4 411⁄16 51⁄4 615⁄32 53⁄64 35⁄64 1⁄2 1 1.57 4 850 3 440 45 27 93 47.6 19 119 133 164 21 14 12 25.4 0.71 21 600 15 30013⁄8 CPB106SS 149⁄64 11⁄16 321⁄32 17⁄8 3⁄4 411⁄16 51⁄4 615⁄32 53⁄64 35⁄64 1⁄2 1 1.44 4 850 3 440 45 27 93 47.6 19 119 133 164 21 14 12 25.4 0.65 21 600 15 30017⁄16 CPB107SS 149⁄64 11⁄16 321⁄32 17⁄8 3⁄4 411⁄16 51⁄4 615⁄32 53⁄64 35⁄64 1⁄2 1 1.37 4 850 3 440 45 27 93 47.6 19 119 133 164 21 14 12 25.4 0.62 21 600 15 30011⁄2 CPB108SS 157⁄64 13⁄16 329⁄32 115⁄16 25⁄32 55⁄64 55⁄8 657⁄64 53⁄64 35⁄64 1⁄2 13⁄16 1.98 5 550 4 270 48 30 99 49.2 20 129 143 175 21 14 12 30 0.90 24 700 19 000



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20 CPB20SS 11⁄4 53⁄64 21⁄2 15⁄16 5⁄8 319⁄32 4 431⁄32 21⁄32 29⁄64 3⁄8 23⁄32 0.53 2 430 1 470 32 21 64 33.3 16 91.5 101.5 126 17 11.5 10 18.3 0.24 10 800 6 550525 CPB25SS 11⁄4 7⁄8 225⁄32 17⁄16 5⁄8 329⁄32 411⁄32 59⁄32 21⁄32 29⁄64 3⁄8 25⁄32 0.64 2 670 1 750 32 22 70.5 36.5 16 99.5 110.5 134 17 11.5 10 19.8 0.29 11 900 7 80030 CPB30SS 137⁄64 63⁄64 315⁄64 111⁄16 3⁄4 41⁄4 53⁄64 61⁄4 53⁄64 35⁄64 1⁄2 7⁄8 1.08 3 660 2 520 40 25 82 42.9 19 108 128 159 21 14 12 22.2 0.49 16 300 11 20035 CPB35SS 149⁄64 11⁄16 321⁄32 17⁄8 3⁄4 411⁄16 51⁄4 615⁄32 53⁄64 35⁄64 1⁄2 1 1.46 4 850 3 440 45 27 93 47.6 19 119 133 164 21 14 12 25.4 0.66 21 600 15 30040 CPB40SS 157⁄64 13⁄16 329⁄32 115⁄16 25⁄32 55⁄64 55⁄8 657⁄64 53⁄64 35⁄64 1⁄2 13⁄16 1.90 5 550 4 270 48 30 99 49.2 20 129 143 175 21 14 12 30 0.86 24 700 19 000

MRC Marathon series composite mounted bearing units are greased and sealed for life. MRC does not recommend regreasing. If required, units with relubrication fittings are available for your application. Adding a “G” suffix to the part number denotes a regreasable unit.� Capacities listed are for the insert bearing only and do not reflect the capacity of the housing. If the application loads exceed 80% of the


Visit www.skfusa.com/mrc to download CAD drawings of MRC bearings

A1

A

Hd

H1

S

10

C2F composite two-bolt flange unitsZMaRC-coated insert bearingAvailable with standard set-screw mounting or


MRC Marathon series composite mounted bearing units are greased and sealed for life. MRC does not recommend regreasing. If required, units with relubrication fittings are available for your application. Adding a “G” suffix to the part number denotes a regreasable unit.1 Cast polymer housing, no steel coils.2 Check with MRC for availability.� Capacities listed are for the insert bearing only and do not reflect the capacity of the housing. If the application loads exceed 80% of the



Shaft Flangeunit Mass Basicradialdia designation double lock- loadratingd A1 A2 Da H J L N G T T1 set-screw collar dynamic C� static C0

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in in in in in in in in in in in lb lb lbf lbf mm mm mm mm mm mm mm mm mm mm kg kg N N

3⁄4 C2F012ZM 15⁄32 19⁄32 2 413⁄32 317⁄32 23⁄8 29⁄64 3⁄8 115⁄32 0.53 2 860 1 470 29.5 15 50.8 112 90 60.5 11.5 10 37.3 0.24 12 700 6 55015⁄16 C2F015ZM 13⁄16 19⁄32 21⁄2 47⁄8 329⁄32 23⁄4 29⁄64 3⁄8 117⁄32 0.67 3 150 1 750 30 15 63.5 124 99 70 11.5 10 38.8 0.30 14 000 7 8001 C2F100ZM-L* 13⁄16 19⁄32 21⁄2 47⁄8 329⁄32 23⁄4 29⁄64 3⁄8 117⁄32 113/16 0.62 0.74 3 150 1 750 30 15 63.5 124 99 70 11.5 10 38.8 46 0.28 0.33 14 000 7 80011⁄8 C2F102ZM 19⁄32 19⁄32 3 539⁄64 419⁄32 317⁄64 29⁄64 3⁄8 121⁄32 0.99 4 380 2 520 33 15 76.2 142.5 116.5 83 11.5 10 42.2 0.45 19 500 11 20013⁄16 C2F103ZM-L* 1⁄32 19⁄32 3 539⁄64 419⁄32 317⁄64 29⁄64 3⁄8 121⁄32 131/32 0.93 1.12 4 380 2 520 33 15 76.2 142.5 116.5 83 11.5 10 42.2 50 0.42 0.51 19 500 11 20011⁄4 C2F104ZMR 1⁄32 19⁄32 3 539⁄64 419⁄32 317⁄64 29⁄64 3⁄8 121⁄32 0.88 4 380 2 520 33 15 76.2 142.5 116.5 83 11.5 10 42.2 0.40 19 500 11 20011⁄4 C2F104ZM-L* 13⁄8 21⁄32 31⁄2 61⁄8 51⁄8 325⁄32 35⁄64 1⁄2 153⁄64 23/32 1.46 1.83 5 730 3 440 35 17 88.9 156 130 96 14 12 46.4 53.2 0.66 0.82 25 500 15 30017⁄16 C2F107ZM-L* 13⁄8 21⁄32 31⁄2 61⁄8 51⁄8 325⁄32 35⁄64 1⁄2 153⁄64 23/32 1.28 1.59 5 730 3 440 35 17 88.9 156 130 96 14 12 46.4 53.2 0.58 0.72 25 500 15 30011⁄2 C2F108ZM1 11⁄4 9⁄16 31⁄2 625⁄32 521⁄32 49⁄16 17⁄32 1⁄2 21⁄32 1.90 6 900 4 270 31.8 14.3 88.9 172.2 143.7 115.9 13.5 12 51.66 0.86 30 700 19 000115⁄16 C2F115ZM-L* 1 2 11⁄4 5⁄8 4 75⁄16 63⁄16 51⁄16 17⁄32 1⁄2 21⁄8 239/64 2.25 2.73 7 890 5 220 31.8 15.9 101.6 185.7 157.2 128.6 13.5 12 54 66.3 1.02 1.23 35 100 23 200


Shaft Flangeunit Basicradialdia designation loadratingd A1 A2 Da H J L N G T Mass dynamic C� static C0

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mm in in in in in in in in in lb lbf lbf mm mm mm mm mm mm mm mm mm kg N N

20 C2F20ZM 15⁄32 19⁄32 2 413⁄32 317⁄32 23⁄8 29⁄64 3⁄8 115⁄32 0.53 2 860 1 470 29.5 15 50.8 112 90 60.5 11.5 10 37.3 0.24 12 700 6 55025 C2F25ZM 13⁄16 19⁄32 21⁄2 47⁄8 329⁄32 23⁄4 29⁄64 3⁄8 117⁄32 0.64 3 150 1 750 30 15 63.5 124 99 70 11.5 10 38.8 0.29 14 000 7 80030 C2F30ZM 19⁄32 19⁄32 3 539⁄64 419⁄32 317⁄64 29⁄64 3⁄8 121⁄32 0.97 4 380 2 520 33 15 76.2 142.5 116.5 83 11.5 10 42.2 0.44 19 500 11 20035 C2F35ZM 13⁄8 21⁄32 31⁄2 61⁄8 51⁄8 325⁄32 35⁄64 1⁄2 153⁄64 1.35 5 730 3 440 35 17 88.9 156 130 96 14 12 46.4 0.61 25 500 15 30040 C2F40ZM1 11⁄4 9⁄16 31⁄2 625⁄32 521⁄32 49⁄16 17⁄32 1⁄2 21⁄32 1.90 6 900 4 270 31.8 14.3 88.9 172.2 143.7 115.9 13.5 12 51.7 0.86 30 700 19 000

G

A2

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AT1

A2

T1

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A1


11

C2F composite two-bolt flange unitsStainless steel insert bearing



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in in in in in in in in in in lb lbf lbf mm mm mm mm mm mm mm mm mm kg N N

3⁄4 C2F012SS 15⁄32 19⁄32 2 413⁄32 317⁄32 23⁄8 29⁄64 3⁄8 115⁄32 0.53 2 430 1 470 29.5 15 50.8 112 90 60.5 11.5 10 37.3 0.24 10 800 6 5501 C2F100SS 13⁄16 19⁄32 21⁄2 47⁄8 329⁄32 23⁄4 29⁄64 3⁄8 117⁄32 0.62 2 670 1 750 30 15 63.5 124 99 70 11.5 10 38.8 0.28 11 900 7 80013⁄16 C2F103SS 19⁄32 19⁄32 3 539⁄64 419⁄32 317⁄64 29⁄64 3⁄8 121⁄32 0.93 3 660 2 520 33 15 76.2 142.5 116.5 83 11.5 10 42.2 0.42 16 300 11 20011⁄4 C2F104SSR 19⁄32 19⁄32 3 539⁄64 419⁄32 317⁄64 29⁄64 3⁄8 121⁄32 0.93 3 660 2 520 33 15 76.2 142.5 116.5 83 11.5 10 42.2 0.42 16 300 11 20011⁄4 C2F104SS 13⁄8 21⁄32 31⁄2 61⁄8 51⁄8 325⁄32 35⁄64 1⁄2 153⁄64 1.46 4 850 3 440 35 17 88.9 156 130 96 14 12 46.4 0.66 21 600 15 30013⁄8 C2F106SS 13⁄8 21⁄32 31⁄2 61⁄8 51⁄8 325⁄32 35⁄64 1⁄2 153⁄64 1.28 4 850 3 440 35 17 88.9 156 130 96 14 12 46.4 0.61 21 600 15 30017⁄16 C2F107SS 13⁄8 21⁄32 31⁄2 61⁄8 51⁄8 325⁄32 35⁄64 1⁄2 153⁄64 1.28 4 850 3 440 35 17 88.9 156 130 96 14 12 46.4 0.58 21 600 15 30011⁄2 C2F108SS1 11⁄4 9⁄16 31⁄2 625⁄32 521⁄32 49⁄16 17⁄32 1⁄2 21⁄32 1.90 5 550 4 270 31.8 14.3 88.9 172.2 143.7 115.9 13.5 12 51.7 0.86 24 700 19 000

MRC Marathon series composite mounted bearing units are greased and sealed for life. MRC does not recommend regreasing. If required, units with relubrication fittings are available for your application. Adding a “G” suffix to the part number denotes a regreasable unit.1 Cast polymer housing, no steel coils.� Capacities listed are for the insert bearing only and do not reflect the capacity of the housing. If the application loads exceed 80% of the



G

A2

d Da

AT1



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mm in in in in in in in in in lb lbf lbf mm mm mm mm mm mm mm mm mm kg N N

20 C2F20SS 15⁄32 19⁄32 2 413⁄32 317⁄32 23⁄8 29⁄64 3⁄8 115⁄32 0.53 2 430 1 470 29.5 15 50.8 112 90 60.5 11.5 10 37.3 0.24 10 800 6 55025 C2F25SS 13⁄16 19⁄32 21⁄2 47⁄8 329⁄32 23⁄4 29⁄64 3⁄8 117⁄32 0.64 2 670 1 750 30 15 63.5 124 99 70 11.5 10 38.8 0.29 11 900 7 80030 C2F30SS 19⁄32 19⁄32 3 539⁄64 419⁄32 317⁄64 29⁄64 3⁄8 121⁄32 0.97 3 660 2 520 33 15 76.2 142.5 116.5 83 11.5 10 42.2 0.44 16 300 11 20035 C2F35SS 13⁄8 21⁄32 31⁄2 61⁄8 51⁄8 325⁄32 35⁄64 1⁄2 153⁄64 1.35 4 850 3 440 35 17 88.9 156 130 96 14 12 46.4 0.61 21 600 15 30040 C2F40SS1 11⁄4 9⁄16 31⁄2 625⁄32 521⁄32 49⁄16 17⁄32 1⁄2 21⁄32 1.90 5 550 4 270 31.8 14.3 88.9 172.2 143.7 115.9 13.5 12 51.7 0.86 24 700 19 000



12

C4F composite four-bolt flange unitsZMaRC-coated insert bearingAvailable with standard set-screw mounting or



Shaft Flangeunit Mass Basicradialdia designation double lock- loadratingd A1 A2 Da J L N G T T1 set-screw collar dynamic C� static C0

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in in in in in in in in in in lb lb lbf lbf mm mm mm mm mm mm mm mm mm kg kg N N

3⁄4 C4F012ZM 13⁄16 19⁄32 211⁄16 21⁄2 33⁄8 29⁄64 3⁄8 115⁄32 0.57 2 860 1 470 30 15 68.5 63.5 86 11.5 10 37.3 0.26 12 700 6 55015⁄16 C4F015ZM 17⁄32 19⁄32 215⁄16 23⁄4 33⁄4 29⁄64 3⁄8 117⁄32 0.76 3 150 1 750 31 15 74.6 70 95 11.5 10 38.8 0.34 14 000 7 8001 C4F100ZM-L* 17⁄32 19⁄32 215⁄16 23⁄4 33⁄4 29⁄64 3⁄8 117⁄32 113/16 0.71 0.83 3 150 1 750 31 15 74.6 70 95 11.5 10 38.8 46 0.32 0.37 14 000 7 80011⁄8 C4F102ZM 19⁄32 19⁄32 311⁄16 31⁄4 41⁄4 29⁄64 3⁄8 121⁄32 1.07 4 380 2 520 33 15 93.7 82.5 108 11.5 10 42.2 0.49 19 500 11 20013⁄16 C4F103ZM-L* 19⁄32 19⁄32 311⁄16 31⁄4 41⁄4 29⁄64 3⁄8 121⁄32 131/32 1.01 1.20 4 380 2 520 33 15 93.7 82.5 108 11.5 10 42.2 50 0.46 0.55 19 500 11 20011⁄4 C4F104ZMR 19⁄32 19⁄32 311⁄16 31⁄4 41⁄4 29⁄64 3⁄8 121⁄32 0.97 4 380 2 520 33 15 93.7 82.5 108 11.5 10 42.2 0.44 19 500 11 20011⁄4 C4F104ZM-L* 13⁄8 21⁄32 43⁄16 35⁄8 45⁄8 35⁄64 1⁄2 153⁄64 23/32 1.57 1.94 5 730 3 440 35 17 106.4 92 118 14 12 46.4 53.2 0.71 0.87 25 500 15 30017⁄16 C4F107ZM-L* 13⁄8 21⁄32 43⁄16 35⁄8 45⁄8 35⁄64 1⁄2 153⁄64 23/32 1.37 1.68 5 730 3 440 35 17 106.4 92 118 14 12 46.4 53.2 0.62 0.76 25 500 15 30011⁄2 C4F108ZM 117⁄32 21⁄32 49⁄16 4 51⁄8 35⁄64 1⁄2 29⁄64 1.98 6 900 4 270 39 17 115.9 101.5 130 14 12 54.2 0.90 30 700 19 000115⁄16 C4F115ZM-L* 1 2 11⁄4 5⁄8 415⁄16 43⁄8 51⁄2 35⁄64 1⁄2 21⁄8 217/32 2.45 2.93 7 890 5 220 31.8 15.9 125.4 111.1 139.7 14 12 54.0 64.3 1.21 1.42 35 100 23 200


Shaft Flangeunit Basicradialdia designation loadratingd A1 A2 Da J L N G T Mass dynamic C� static C0

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mm in in in in in in in in lb lbf lbf mm mm mm mm mm mm mm mm kg N N

20 C4F20ZM 13⁄16 19⁄32 211⁄16 21⁄2 33⁄8 29⁄64 3⁄8 115⁄32 0.57 2 860 1 470 30 15 68.3 63.5 86 11.5 10 37.3 0.26 12 700 6 55025 C4F25ZM 17⁄32 19⁄32 215⁄16 23⁄4 33⁄4 29⁄64 3⁄8 117⁄32 0.73 3 150 1 750 31 15 74.6 70 95 11.5 10 38.8 0.33 14 000 7 80030 C4F30ZM 19⁄32 19⁄32 311⁄16 31⁄4 41⁄4 29⁄64 3⁄8 121⁄32 1.06 4 380 2 520 33 15 93.7 82.5 108 11.5 10 42.2 0.48 19 500 11 20035 C4F35ZM 13⁄8 21⁄32 43⁄16 35⁄8 45⁄8 35⁄64 1⁄2 153⁄64 1.46 5 730 3 440 35 17 106.4 92 118 14 12 46.4 0.66 25 500 15 30040 C4F40ZM 117⁄32 21⁄32 49⁄16 4 51⁄8 35⁄64 1⁄2 29⁄64 1.92 6 900 4 270 39 17 115.9 101.5 130 14 12 54.2 0.87 30 700 19 000



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T

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20 C4F20SS 13⁄16 19⁄32 211⁄16 21⁄2 33⁄8 29⁄64 3⁄8 115⁄32 0.57 2 430 1 470 30 15 68.3 63.5 86 11.5 10 37.3 0.26 10 800 6 55025 C4F25SS 17⁄32 19⁄32 215⁄16 23⁄4 33⁄4 29⁄64 3⁄8 117⁄32 0.73 2 670 1 750 31 15 74.6 70 95 11.5 10 38.8 0.33 11 900 7 80030 C4F30SS 19⁄32 19⁄32 311⁄16 31⁄4 41⁄4 29⁄64 3⁄8 121⁄32 1.06 3 660 2 520 33 15 93.7 82.5 108 11.5 10 42.2 0.48 16 300 11 20035 C4F35SS 13⁄8 21⁄32 43⁄16 35⁄8 45⁄8 35⁄64 1⁄2 153⁄64 1.46 4 850 3 440 35 17 106.4 92 118 14 12 46.4 0.66 21 600 15 30040 C4F40SS 117⁄32 21⁄32 49⁄16 4 51⁄8 35⁄64 1⁄2 29⁄64 1.92 5 550 4 270 39 17 115.9 101.5 130 14 12 54.2 0.87 24 700 19 000

C4F composite four-bolt flange unitsStainless steel insert bearing



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in in in in in in in in in lb lbf lbf mm mm mm mm mm mm mm mm kg N N

3⁄4 C4F012SS 13⁄16 19⁄32 211⁄16 21⁄2 33⁄8 29⁄64 3⁄8 115⁄32 0.57 2 430 1 470 30 15 68.3 63.5 86 11.5 10 37.3 0.26 10 800 6 5501 C4F100SS 17⁄32 19⁄32 215⁄16 23⁄4 33⁄4 29⁄64 3⁄8 117⁄32 0.71 2 670 1 750 31 15 74.6 70 95 11.5 10 38.8 0.32 11 900 7 80013⁄16 C4F103SS 19⁄32 19⁄32 311⁄16 31⁄4 41⁄4 29⁄64 3⁄8 121⁄32 1.01 3 660 2 520 33 15 93.7 82.5 108 11.5 10 42.2 0.46 16 300 11 20011⁄4 C4F104SSR 11⁄16 1⁄2 311⁄16 31⁄4 41⁄4 15⁄32 7⁄16 143⁄64 1.40 3 660 2 520 27 12.7 93.7 82.5 108 11.9 11.1 42.5 0.63 16 300 11 20011⁄4 C4F104SS 13⁄8 21⁄32 43⁄16 35⁄8 45⁄8 35⁄64 1⁄2 153⁄64 1.57 4 850 3 440 35 17 106.4 92 118 14 12 46.4 0.71 21 600 15 30013⁄8 C4F106SS 13⁄8 21⁄32 43⁄16 35⁄8 45⁄8 35⁄64 1⁄2 153⁄64 1.46 4 850 3 440 35 17 106.4 92 118 14 12 46.4 0.66 21 600 15 30017⁄16 C4F107SS 13⁄8 21⁄32 43⁄16 35⁄8 45⁄8 35⁄64 1⁄2 153⁄64 1.37 4 850 3 440 35 17 106.4 92 118 14 12 46.4 0.62 21 600 15 30011⁄2 C4F108SS 117⁄32 21⁄32 49⁄16 4 51⁄8 35⁄64 1⁄2 29⁄64 1.98 5 550 4 270 39 17 115.9 101.5 130 14 12 54.2 0.90 24 700 19 000

MRC Marathon series composite mounted bearing units are greased and sealed for life. MRC does not recommend regreasing. If required, units with relubrication fittings are available for your application. Adding a “G” suffix to the part number denotes a regreasable unit.� Capacities listed are for the insert bearing only and do not reflect the capacity of the housing. If the application loads exceed 80% of the



G

T

Da

A2

d

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14

CTB composite tapped-base unitsZMaRC-coated insert bearingAvailable with standard set-screw mounting or



Shaft Tapped-base Mass Basicradialdia unit double lock- loadratingd designation A H H1 J L F G S S1 set-screw collar dynamic C� static C0

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in in in in in in in UNC in in lb lb lbf lbf mm mm mm mm mm mm threads mm mm kg kg N N

3⁄4 CTB012ZM 17⁄16 25⁄8 15⁄16 2 3 1⁄2 3⁄8 –16 23⁄32 0.51 2 860 1 470 36.5 66.7 33.3 50.8 76.2 12.7 18.3 0.23 12 700 6 55015⁄16 CTB015ZM 17⁄16 215⁄16 17⁄16 2 31⁄4 1⁄2 3⁄8 –16 25⁄32 0.72 3 150 1 750 36.5 74.6 36.5 50.8 82.5 12.7 19.8 0.32 14 000 7 8001 CTB100ZM-L* 17⁄16 215⁄16 17⁄16 2 31⁄4 1⁄2 3⁄8 –16 25⁄32 11/16 0.67 0.79 3 150 1 750 36.5 74.6 36.5 50.8 82.5 12.7 19.8 27.0 0.30 0.35 14 000 7 80011⁄8 CTB102ZM 15⁄8 33⁄8 111⁄16 3 41⁄4 5⁄8 7⁄16 –14 7⁄8 1.06 4 380 2 520 41.3 85.7 42.9 76.2 108.0 15.9 22.2 0.48 19 500 11 20013⁄16 CTB103ZM-L* 15⁄8 33⁄8 111⁄16 3 41⁄4 5⁄8 7⁄16 –14 7⁄8 13/16 1.00 1.19 4 380 2 520 41.3 85.7 42.9 76.2 108.0 15.9 22.2 30.2 0.45 0.54 19 500 11 20011⁄4 CTB104ZMR 15⁄8 33⁄8 111⁄16 3 41⁄4 5⁄8 7⁄16 –14 7⁄8 1.00 4 380 2 520 41.3 85.7 42.9 76.2 108.0 15.9 22.2 0.45 19 500 11 20011⁄4 CTB104ZM-L* 13⁄4 37⁄8 17⁄8 31⁄4 41⁄2 3⁄4 1⁄2 –13 1 19/32 1.60 1.97 5 730 3 440 44.5 98.4 47.6 82.6 114.3 19.1 25.4 32.5 0.73 0.89 25 500 15 30017⁄16 CTB107ZM-L* 13⁄4 37⁄8 17⁄8 31⁄4 41⁄2 3⁄4 1⁄2 –13 1 19/32 1.40 1.71 5 730 3 440 44.5 98.4 47.6 82.6 114.3 19.1 25.4 32.5 0.64 0.78 25 500 15 30011⁄2 CTB108ZM 17⁄8 41⁄8 115⁄16 31⁄2 43⁄4 3⁄4 1⁄2 –13 13⁄16 2.00 6 900 4 270 47.6 104.8 49.2 88.9 120.7 19.1 30 0.91 30 700 19 000115⁄16 CTB115ZM-L* 21⁄8 43⁄4 21⁄4 4 53⁄4 7⁄8 5⁄8 –11 19⁄32 11/2 2.65 3.13 7 890 5 220 54 120.7 57.2 101.6 146.1 22.2 32.6 38.1 1.20 1.41 35 100 23 200

MRC Marathon series composite mounted bearing units are greased and sealed for life. MRC does not recommend regreasing. If required, units with relubrication fittings are available for your application. Adding a “G” suffix to the part number denotes a regreasable unit.Cast polymer housing. No steel coils.� Capacities listed are for the insert bearing only and do not reflect the capacity of the housing. If the application loads exceed 80% of the



Shaft Tapped-base Basicradialdia unit loadratingd designation A H H1 J L F G S1 Mass dynamic C� static C0

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mm in in in in in in UNC in lb lbf lbf mm mm mm mm mm mm threads mm kg N N

20 CTB20ZM 17⁄16 25⁄8 15⁄16 2 3 1⁄2 3⁄8 –16 23⁄32 0.51 2 860 1 470 36.5 66.7 33.3 50.8 76.2 12.7 18.3 0.23 12 700 6 55025 CTB25ZM 17⁄16 215⁄16 17⁄16 2 31⁄4 1⁄2 3⁄8 –16 25⁄32 0.67 3 150 1 750 36.5 74.6 36.5 50.8 82.5 12.7 19.8 0.30 14 000 7 80030 CTB30ZM 15⁄8 33⁄8 111⁄16 3 41⁄4 5⁄8 7⁄16 –14 7⁄8 1.00 4 380 2 520 41.3 85.7 42.9 76.2 108.0 15.9 22.2 0.45 19 500 11 20035 CTB35ZM 13⁄4 37⁄8 17⁄8 31⁄4 41⁄2 3⁄4 1⁄2 –13 1 1.40 5 730 3 440 44.5 98.4 47.6 82.6 114.3 19.1 25.4 0.64 25 500 15 30040 CTB40ZM 17⁄8 41⁄8 115⁄16 31⁄2 43⁄4 3⁄4 1⁄2 –13 13⁄16 2.00 6 900 4 270 47.6 104.8 49.2 88.9 120.7 19.1 30 0.91 30 700 19 000

J

G

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A

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d

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H

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H

H1

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15

CTB composite tapped-base unitsStainless steel insert bearing



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in in in in in in in UNC in lb lbf lbf mm mm mm mm mm mm threads mm kg N N

3⁄4 CTB012SS 17⁄16 25⁄8 15⁄16 2 3 1⁄2 3⁄8 –16 23⁄32 0.51 2 430 1 470 36.5 66.7 33.3 50.8 76.2 12.7 18.3 0.23 10 800 6 5501 CTB100SS 17⁄16 215⁄16 17⁄16 2 31⁄4 1⁄2 3⁄8 –16 25⁄32 0.67 2 670 1 750 36.5 74.6 36.5 50.8 82.5 12.7 19.8 0.30 11 900 7 80013⁄16 CTB103SS 15⁄8 33⁄8 111⁄16 3 41⁄4 5⁄8 7⁄16 –14 7⁄8 1.00 3 660 2 520 41.3 85.7 42.9 76.2 108.0 15.9 22.2 0.45 16 300 11 20011⁄4 CTB104SSR 15⁄8 33⁄8 111⁄16 3 41⁄4 5⁄8 7⁄16 –14 1 1.30 3 660 2 520 41.3 85.7 42.9 76.2 108.0 15.9 25.4 0.59 16 300 11 20011⁄4 CTB104SS 13⁄4 37⁄8 17⁄8 31⁄4 41⁄2 3⁄4 1⁄2 –13 1 1.60 4 850 3 440 44.5 98.4 47.6 82.6 114.3 19.1 25.4 0.73 21 600 15 30013⁄8 CTB106SS 13⁄4 37⁄8 17⁄8 31⁄4 41⁄2 3⁄4 1⁄2 –13 1 1.60 4 850 3 440 44.5 98.4 47.6 82.6 114.3 19.1 25.4 0.73 21 600 15 30017⁄16 CTB107SS 13⁄4 37⁄8 17⁄8 31⁄4 41⁄2 3⁄4 1⁄2 –13 1 1.60 4 850 3 440 44.5 98.4 47.6 82.6 114.3 19.1 25.4 0.73 21 600 15 30011⁄2 CTB108SS 17⁄8 41⁄8 115⁄16 31⁄2 43⁄4 3⁄4 1⁄2 –13 13⁄16 2.00 5 550 4 270 47.6 104.8 49.2 88.9 120.7 19.1 30 0.91 24 700 19 000




J

G

L

A

F

d

S

H1

H



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mm in in in in in in UNC in lb lbf lbf mm mm mm mm mm mm threads mm kg N N

20 CTB20SS 17⁄16 25⁄8 15⁄16 2 3 1⁄2 3⁄8 –16 23⁄32 0.51 2 430 1 470 36.5 66.7 33.3 50.8 76.2 12.7 18.3 0.23 10 800 6 55025 CTB25SS 17⁄16 215⁄16 17⁄16 2 31⁄4 1⁄2 3⁄8 –16 25⁄32 0.67 2 670 1 750 36.5 74.6 36.5 50.8 82.5 12.7 19.8 0.30 11 900 7 80030 CTB30SS 15⁄8 33⁄8 111⁄16 3 41⁄4 5⁄8 7⁄16 –14 7⁄8 1.00 3 660 2 520 41.3 85.7 42.9 76.2 108.0 15.9 22.2 0.45 16 300 11 20035 CTB35SS 13⁄4 37⁄8 17⁄8 31⁄4 41⁄2 3⁄4 1⁄2 –13 1 1.40 4 850 3 440 44.5 98.4 47.6 82.6 114.3 19.1 25.4 0.64 21 600 15 30040 CTB40SS 17⁄8 41⁄8 115⁄16 31⁄2 43⁄4 3⁄4 1⁄2 –13 13⁄16 2.00 5 550 4 270 47.6 104.8 49.2 88.9 120.7 19.1 30 0.91 24 700 19 000



16


Shaft Flangeunit Bolt Mass Basicradialdia designation size loadratingd A F B C L H J N G T dynamic C� static C0

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mm in in in in in in in in in in in lb lbf lbf mm mm mm mm mm mm mm mm mm mm kg N N

20 CBF20ZM 15⁄16 7⁄16 411⁄32 111⁄16 29⁄16 7⁄8 11⁄2 11⁄32 13⁄32 15⁄16 3⁄8 0.51 2 860 1 470 23.8 11.1 110.3 42.9 65.1 22.2 38.1 8.7 10.3 33.3 0.23 12 700 6 55025 CBF25ZM 1 1⁄2 43⁄4 113⁄16 23⁄4 11⁄8 15⁄8 11⁄32 13⁄32 17⁄16 3⁄8 0.70 3 150 1 750 25.4 12.7 120.7 46.0 69.9 28.6 41.3 8.7 10.3 36.5 0.32 14 000 7 80030 CBF30ZM 11⁄16 1⁄2 57⁄16 21⁄16 31⁄4 11⁄4 17⁄8 25⁄64 13⁄32 135⁄64 3⁄8 1.00 4 380 2 520 27.0 12.7 138.1 52.4 82.6 31.8 47.6 9.9 10.3 39.3 0.45 19 500 11 20035 CBF35ZM 17⁄32 9⁄16 63⁄16 23⁄8 313⁄16 11⁄4 2 13⁄32 17⁄32 113⁄16 1⁄2 1.34 5 730 3 440 31.0 14.3 157.2 60.3 96.8 31.8 50.8 10.4 13.5 46.0 0.61 25 500 15 30040 CBF40ZM 11⁄4 9⁄16 611⁄16 29⁄16 41⁄4 13⁄8 21⁄4 13⁄32 17⁄32 21⁄64 1⁄2 1.90 6 900 4 270 31.8 14.3 169.9 65.1 108.0 34.9 57.2 10.4 13.5 51.4 0.86 30 700 19 000

CBF composite three-bolt bracket flange unitsZMaRC-coated insert bearing



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in in in in in in in in in in in in lb lbf lbf mm mm mm mm mm mm mm mm mm mm kg N N

3⁄4 CBF012ZM 15⁄16 7⁄16 411⁄32 111⁄16 29⁄16 7⁄8 11⁄2 11⁄32 13⁄32 15⁄16 3⁄8 0.51 2 860 1 470 23.8 11.1 110.3 42.9 65.1 22.2 38.1 8.7 10.3 33.3 0.23 12 700 6 55015⁄16 CBF015ZM2 1 1⁄2 43⁄4 113⁄16 23⁄4 11⁄8 15⁄8 11⁄32 13⁄32 17⁄16 3⁄8 0.75 3 150 1 750 25.4 12.7 120.7 46.0 69.9 28.6 41.3 8.7 10.3 36.5 0.34 14 000 7 8001 CBF100ZM 1 1⁄2 43⁄4 113⁄16 23⁄4 11⁄8 15⁄8 11⁄32 13⁄32 17⁄16 3⁄8 0.70 3 150 1 750 25.4 12.7 120.7 46.0 69.9 28.6 41.3 8.7 10.3 36.5 0.32 14 000 7 80011⁄8 CBF102ZM 11⁄16 1⁄2 57⁄16 21⁄16 31⁄4 11⁄4 17⁄8 25⁄64 13⁄32 135⁄64 3⁄8 1.10 4 380 2 520 27.0 12.7 138.1 52.4 82.6 31.8 47.6 9.9 10.3 39.3 0.50 19 500 11 20013⁄16 CBF103ZM 11⁄16 1⁄2 57⁄16 21⁄16 31⁄4 11⁄4 17⁄8 25⁄64 13⁄32 135⁄64 3⁄8 1.00 4 380 2 520 27.0 12.7 138.1 52.4 82.6 31.8 47.6 9.9 10.3 39.3 0.45 19 500 11 20011⁄4 CBF104ZMR 11⁄16 1⁄2 57⁄16 21⁄16 31⁄4 11⁄4 17⁄8 25⁄64 13⁄32 135⁄64 3⁄8 1.00 4 380 2 520 27.0 12.7 138.1 52.4 82.6 31.8 47.6 9.9 10.3 39.3 0.45 19 500 11 20011⁄4 CBF104ZM 17⁄32 9⁄16 63⁄16 23⁄8 313⁄16 11⁄4 2 13⁄32 17⁄32 113⁄16 1⁄2 1.50 5 730 3 440 31.0 14.3 157.2 60.3 96.8 38.1 50.8 10.4 13.5 46.0 0.68 25 500 15 30017⁄16 CBF107ZM 17⁄32 9⁄16 63⁄16 23⁄8 33⁄16 11⁄4 2 13⁄32 17⁄32 113⁄16 1⁄2 1.34 5 730 3 440 31.0 14.3 157.2 60.3 96.8 31.8 50.8 10.4 13.5 46.0 0.61 25 500 15 30011⁄2 CBF108ZM 11⁄4 9⁄16 611⁄16 29⁄16 41⁄4 13⁄8 21⁄4 13⁄32 17⁄32 21⁄64 1⁄2 1.90 6 900 4 270 31.8 14.3 169.9 65.1 108.0 34.9 57.2 10.4 13.5 51.4 0.86 30 700 19 000115⁄16 CBF115ZM2 11⁄4 5⁄8 75⁄8 215⁄16 47⁄8 15⁄8 23⁄4 13⁄32 17⁄32 21⁄8 1⁄2 2.25 7 890 5 220 31.8 15.9 193.7 74.6 123.8 15.9 69.9 10.4 13.5 54.0 1.02 35 100 23 200

MRC Marathon series composite mounted bearing units are greased and sealed for life. MRC does not recommend regreasing. If required, units with relubrication fittings are available for your application. Adding a “G” suffix to the part number denotes a regreasable unit.Cast polymer housing. No steel coils.2 Check with MRC for availability� Capacities listed are for the insert bearing only and do not reflect the capacity of the housing. If the application loads exceed 80% of the


L

BC

H

J

G

F

d

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A

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17





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mm in in in in in in in in in in in lb lbf lbf mm mm mm mm mm mm mm mm mm mm kg N N

20 CBF20SS 15⁄16 7⁄16 411⁄32 111⁄16 29⁄16 7⁄8 11⁄2 11⁄32 13⁄32 15⁄16 3⁄8 0.51 2 430 1 470 23.8 11.1 110.3 42.9 65.1 22.2 38.1 8.7 10.3 33.3 0.23 10 800 6 55025 CBF25SS 1 1⁄2 43⁄4 113⁄16 23⁄4 11⁄8 15⁄8 11⁄32 13⁄32 17⁄16 3⁄8 0.70 2 670 1 750 25.4 12.7 120.7 46.0 69.9 28.6 41.3 8.7 10.3 36.5 0.32 11 900 7 80030 CBF30SS 11⁄16 1⁄2 57⁄16 21⁄16 31⁄4 11⁄4 17⁄8 25⁄64 13⁄32 135⁄64 3⁄8 1.00 3 660 2 520 27.0 12.7 138.1 52.4 82.6 31.8 47.6 9.9 10.3 39.3 0.45 16 300 11 20035 CBF35SS 17⁄32 9⁄16 63⁄16 23⁄8 313⁄16 11⁄4 2 13⁄32 17⁄32 113⁄16 1⁄2 1.34 4 850 3 440 31.0 14.3 157.2 60.3 96.8 31.8 50.8 10.4 13.5 46.0 0.61 21 600 15 30040 CBF40SS 11⁄4 9⁄16 611⁄16 29⁄16 41⁄4 13⁄8 21⁄4 13⁄32 17⁄32 21⁄64 1⁄2 1.90 5 550 4 270 31.8 14.3 169.9 65.1 108.0 34.9 57.2 10.4 13.5 51.4 0.86 24 700 19 000

CBF composite three-bolt bracket flange unitsStainless steel insert bearing



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in in in in in in in in in in in in lb lbf lbf mm mm mm mm mm mm mm mm mm mm kg N N

3⁄4 CBF012SS 15⁄16 7⁄16 411⁄32 111⁄16 29⁄16 7⁄8 11⁄2 11⁄32 13⁄32 15⁄16 3⁄8 0.51 2 430 1 470 23.8 11.1 110.3 42.9 65.1 22.2 38.1 8.7 10.3 33.3 0.23 10 800 6 5501 CBF100SS 1 1⁄2 43⁄4 113⁄16 23⁄4 11⁄8 15⁄8 11⁄32 13⁄32 17⁄16 3⁄8 0.70 2 670 1 750 25.4 12.7 120.7 46.0 69.9 28.6 41.3 8.7 10.3 36.5 0.32 11 900 7 80013⁄16 CBF103SS 11⁄16 1⁄2 57⁄16 21⁄16 31⁄4 11⁄4 17⁄8 25⁄64 13⁄32 135⁄64 3⁄8 1.00 3 660 2 520 27.0 12.7 138.1 52.4 82.6 31.8 47.6 9.9 10.3 39.3 0.45 16 300 11 20011⁄4 CBF104SSR 11⁄16 1⁄2 57⁄16 21⁄16 31⁄4 11⁄4 17⁄8 25⁄64 13⁄32 143⁄64 3⁄8 1.30 3 660 2 520 27.0 12.7 138.1 52.4 82.6 31.8 47.6 9.9 10.3 42.5 0.59 16 300 11 20011⁄4 CBF104SS 17⁄32 9⁄16 63⁄16 23⁄8 313⁄16 11⁄4 2 13⁄32 17⁄32 113⁄16 1⁄2 1.50 4 850 3 440 31.0 14.3 157.2 60.3 96.8 31.8 50.8 10.4 13.5 46.0 0.68 21 600 15 30013⁄8 CBF106SS 17⁄32 9⁄16 63⁄16 23⁄8 313⁄16 11⁄4 2 13⁄32 17⁄32 113⁄16 1⁄2 1.40 4 850 3 440 31.0 14.3 157.2 60.3 96.8 31.8 50.8 10.4 13.5 46.0 0.63 21 600 15 30017⁄16 CBF107SS 17⁄32 9⁄16 63⁄16 23⁄8 313⁄16 11⁄4 2 13⁄32 17⁄32 113⁄16 1⁄2 1.34 4 850 3 440 31.0 14.3 157.2 60.3 96.8 31.8 50.8 10.4 13.5 46.0 0.61 21 600 15 30011⁄2 CBF108SS 11⁄4 9⁄16 611⁄16 29⁄16 41⁄4 13⁄8 21⁄4 13⁄32 17⁄32 21⁄64 1⁄2 1.90 5 550 4 270 31.8 14.3 169.9 65.1 108.0 34.9 57.2 10.4 13.5 51.4 0.86 24 700 19 000




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18


Shaft Take-up Pin Mass Basicradialdia unit dia loadratingd designation A B C L D H G A1 J N S1 dynamic C� static C0

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mm in in in in in in in in in in in lb lbf lbf mm mm mm mm mm mm mm mm mm mm mm kg N N

20 CTN20ZM 13⁄8 31⁄8 25⁄8 37⁄16 23⁄16 7⁄8 7⁄16 1⁄4 5⁄16 25⁄32 23⁄32 0.70 2 860 1 470 34.9 79.4 66.7 87.3 55.5 22.2 11.1 6.4 7.9 19.8 18.3 0.32 12 700 6 55025 CTN25ZM 13⁄8 31⁄8 25⁄8 39⁄16 23⁄16 7⁄8 7⁄16 1⁄4 5⁄16 25⁄32 25⁄32 0.70 3 150 1 750 34.9 79.4 66.7 90.5 55.5 22.2 11.1 6.4 7.9 19.8 19.8 0.32 14 000 7 80030 CTN30ZM 13⁄8 41⁄8 31⁄2 45⁄16 211⁄16 1 1⁄2 1⁄4 5⁄16 25⁄32 7⁄8 1.10 4 380 2 520 34.9 104.8 88.9 109.5 68.3 25.4 12.7 6.4 7.9 19.8 22.2 0.50 19 500 11 20035 CTN35ZM 13⁄8 41⁄8 31⁄2 41⁄2 211⁄16 1 1⁄2 1⁄4 5⁄16 25⁄32 1 1.60 5 730 3 440 34.9 104.8 88.9 114.3 68.3 25.4 12.7 6.4 7.9 19.8 25.4 0.73 25 500 15 30040 CTN40ZM 15⁄8 43⁄4 4 53⁄8 31⁄4 15⁄32 21⁄32 5⁄16 3⁄8 25⁄32 13⁄16 2.30 6 900 4 270 41.3 120.7 101.6 136.5 82.6 29.4 16.7 7.9 9.5 19.8 30.0 1.00 30 700 19 000

CTN composite narrow slot take-up unitsZMaRC-coated insert bearing



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in in in in in in in in in in in in lb lbf lbf mm mm mm mm mm mm mm mm mm mm mm kg N N

3⁄4 CTN012ZM 13⁄8 31⁄8 25⁄8 37⁄16 23⁄16 7⁄8 7⁄16 1⁄4 5⁄16 25⁄32 23⁄32 0.70 2 860 1 470 34.9 79.4 66.7 87.3 55.5 22.2 11.1 6.4 7.9 19.8 18.3 0.32 12 700 6 55015⁄16 CTN015ZM2 13⁄8 31⁄8 25⁄8 39⁄16 23⁄16 7⁄8 7⁄16 1⁄4 5⁄16 25⁄32 25⁄32 0.75 3 150 1 750 34.9 79.4 66.7 90.5 55.5 22.2 11.1 6.4 7.9 19.8 19.8 0.34 14 000 7 8001 CTN100ZM 13⁄8 31⁄8 25⁄8 39⁄16 23⁄16 7⁄8 7⁄16 1⁄4 5⁄16 25⁄32 25⁄32 0.70 3 150 1 750 34.9 79.4 66.7 90.5 55.5 22.2 11.1 6.4 7.9 19.8 19.8 0.32 14 000 7 80011⁄8 CTN102ZM 13⁄8 41⁄8 31⁄2 45⁄16 211⁄16 1 1⁄2 1⁄4 5⁄16 25⁄32 7⁄8 1.20 4 380 2 520 34.9 104.8 88.9 109.5 68.3 25.4 12.7 6.4 7.9 19.8 22.2 0.54 19 500 11 20013⁄16 CTN103ZM 13⁄8 41⁄8 31⁄2 45⁄16 211⁄16 1 1⁄2 1⁄4 5⁄16 25⁄32 7⁄8 1.10 4 380 2 520 34.9 104.8 88.9 109.5 68.3 25.4 12.7 6.4 7.9 19.8 22.2 0.50 19 500 11 20011⁄4 CTN104ZMR 13⁄8 41⁄8 31⁄2 45⁄16 211⁄16 1 1⁄2 1⁄4 5⁄16 25⁄32 7⁄8 1.10 4 380 2 520 34.9 104.8 88.9 109.5 68.3 25.4 12.7 6.4 7.9 19.8 22.2 0.50 19 500 11 20011⁄4 CTN104ZM 13⁄8 41⁄8 31⁄2 41⁄2 211⁄16 1 1⁄2 1⁄4 5⁄16 25⁄32 1 1.60 5 730 3 440 34.9 104.8 88.9 114.3 68.3 25.4 12.7 6.4 7.9 19.8 25.4 0.73 25 500 15 30017⁄16 CTN107ZM 13⁄8 41⁄8 31⁄2 41⁄2 211⁄16 1 1⁄2 1⁄4 5⁄16 25⁄32 1 1.60 5 730 3 440 34.9 104.8 88.9 114.3 68.3 25.4 12.7 6.4 7.9 19.8 25.4 0.73 25500 15 30011⁄2 CTN108ZM 15⁄8 43⁄4 4 53⁄8 31⁄4 15⁄32 21⁄32 5⁄16 3⁄8 25⁄32 13⁄16 2.30 6 900 4 270 41.3 120.7 101.6 136.5 82.6 29.4 16.7 7.9 9.5 19.8 30 1.00 30 700 19 000115⁄16 CTN115ZM 15⁄8 43⁄4 4 51⁄2 31⁄4 15⁄32 21⁄32 5⁄16 3⁄8 29⁄32 19⁄32 2.55 7 890 5 220 41.3 120.7 101.6 139.7 82.6 29.4 16.7 7.9 9.5 23.0 32.6 1.16 35 100 23 200



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20 CTN20SS 13⁄8 31⁄8 25⁄8 37⁄16 23⁄16 7⁄8 7⁄16 1⁄4 5⁄16 25⁄32 23⁄32 0.70 2 430 1 470 34.9 79.4 66.7 87.3 55.5 22.2 11.1 6.4 7.9 19.8 18.3 0.32 10 800 6 55025 CTN25SS 13⁄8 31⁄8 25⁄8 39⁄16 23⁄16 7⁄8 7⁄16 1⁄4 5⁄16 25⁄32 25⁄32 0.70 2 670 1 750 34.9 79.4 66.7 90.5 55.5 22.2 11.1 6.4 7.9 19.8 19.8 0.32 11 900 7 80030 CTN30SS 13⁄8 41⁄8 31⁄2 45⁄16 211⁄16 1 1⁄2 1⁄4 5⁄16 25⁄32 7⁄8 1.10 3 660 2 520 34.9 104.8 88.9 109.5 68.3 25.4 12.7 6.4 7.9 19.8 22.2 0.50 16 300 11 20035 CTN35SS 13⁄8 41⁄8 31⁄2 41⁄2 211⁄16 1 1⁄2 1⁄4 5⁄16 25⁄32 1 1.60 4 850 3 440 34.9 104.8 88.9 114.3 68.3 25.4 12.7 6.4 7.9 19.8 25.4 0.73 21 600 15 30040 CTN40SS 15⁄8 43⁄4 4 53⁄8 31⁄4 15⁄32 21⁄32 5⁄16 3⁄8 25⁄32 13⁄16 2.30 5 550 4 270 41.3 120.7 101.6 136.5 82.6 29.4 16.7 7.9 9.5 19.8 30.0 1.00 24 700 19 000

CTN composite narrow slot take-up unitsStainless steel insert bearing



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3⁄4 CTN012SS 13⁄8 31⁄8 25⁄8 37⁄16 23⁄16 7⁄8 7⁄16 1⁄4 5⁄16 25⁄32 23⁄32 0.70 2 430 1 470 34.9 79.4 66.7 87.3 55.5 22.2 11.1 6.4 7.9 19.8 18.3 0.32 10 800 6 5501 CTN100SS 13⁄8 31⁄8 25⁄8 39⁄16 23⁄16 7⁄8 7⁄16 1⁄4 5⁄16 25⁄32 25⁄32 0.70 2 670 1 750 34.9 79.4 66.7 90.5 55.5 22.2 11.1 6.4 7.9 19.8 19.8 0.32 11 900 7 80013⁄16 CTN103SS 13⁄8 41⁄8 31⁄2 45⁄16 211⁄16 1 1⁄2 1⁄4 5⁄16 25⁄32 7⁄8 1.10 3 660 2 520 34.9 104.8 88.9 109.5 68.3 25.4 12.7 6.4 7.9 19.8 22.2 0.50 16 300 11 20011⁄4 CTN104SSR 13⁄8 41⁄8 31⁄2 45⁄16 211⁄16 1 1⁄2 1⁄4 5⁄16 25⁄32 1 1.40 3 660 2 520 34.9 104.8 88.9 109.5 68.3 25.4 12.7 6.4 7.9 19.8 25.4 0.63 16 300 11 20011⁄4 CTN104SS 13⁄8 41⁄8 31⁄2 41⁄2 211⁄16 1 1⁄2 1⁄4 5⁄16 25⁄32 7⁄8 1.60 4 850 3 440 34.9 104.8 88.9 114.3 68.3 25.4 12.7 6.4 7.9 19.8 22.2 0.73 21 600 15 30013⁄8 CTN106SS 13⁄8 41⁄8 31⁄2 41⁄2 211⁄16 1 1⁄2 1⁄4 5⁄16 25⁄32 1 1.60 4 850 3 440 34.9 104.8 88.9 114.3 68.3 25.4 12.7 6.4 7.9 19.8 25.4 0.73 21 600 15 30017⁄16 CTN107SS 13⁄8 41⁄8 31⁄2 41⁄2 211⁄16 1 1⁄2 1⁄4 5⁄16 25⁄32 1 1.60 4 850 3 440 34.9 104.8 88.9 114.3 68.3 25.4 12.7 6.4 7.9 19.8 25.4 0.73 21 600 15 30011⁄2 CTN108SS 15⁄8 43⁄4 4 53⁄8 31⁄4 15⁄32 21⁄32 5⁄16 3⁄8 25⁄32 13⁄16 2.30 5 550 4 270 41.3 120.7 101.6 136.5 82.6 29.4 16.7 7.9 9.5 19.8 30.0 1.00 24 700 19 000




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Shaft Take-up Mass Basicradialdia unit loadratingd designation A B C L D H G A1 J N S1 dynamic C� static C0

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20 CTW20ZM 13⁄8 35⁄8 3 311⁄16 23⁄8 11⁄16 7⁄16 17⁄32 17⁄16 21⁄32 23⁄32 0.81 2 860 1 470 34.9 92.1 76.2 93.7 60.3 27.0 11.1 13.5 36.5 16.7 18.3 0.37 12 700 6 50025 CTW25ZM 13⁄8 35⁄8 3 313⁄16 27⁄16 11⁄16 7⁄16 17⁄32 17⁄16 21⁄32 25⁄32 0.87 3 150 1 750 34.9 92.1 76.2 96.8 61.9 27.0 11.1 13.5 36.5 16.7 19.8 0.39 14 000 7 80030 CTW30ZM 15⁄8 41⁄8 31⁄2 43⁄8 23⁄4 15⁄32 3⁄8 17⁄32 15⁄8 25⁄32 7⁄8 1.40 4 380 2 520 41.3 104.8 88.9 111.1 69.9 29.4 9.5 13.5 41.3 19.8 22.2 0.64 19 500 11 20035 CTW35ZM 15⁄8 41⁄8 31⁄2 413⁄16 3 15⁄32 3⁄8 17⁄32 15⁄8 25⁄32 1 1.50 5 730 3 440 41.3 104.8 88.9 122.2 76.2 29.4 9.5 13.5 41.3 19.8 25.4 0.68 25 500 15 30040 CTW40ZM 115⁄16 41⁄2 4 51⁄2 37⁄16 11⁄2 9⁄16 11⁄16 115⁄16 11⁄16 13⁄16 2.40 6 900 4 270 49.2 114.3 101.6 139.7 87.3 38.1 14.3 17.5 49.2 27.0 30.0 1.10 30 700 19 000

CTW composite wide slot take-up unitsZMaRC-coated insert bearing



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3⁄4 CTW012ZM 13⁄8 35⁄8 3 311⁄16 23⁄8 11⁄16 7⁄16 17⁄32 17⁄16 21⁄32 23⁄32 0.81 2 860 1 470 34.9 92.1 76.2 93.7 60.3 27.0 11.1 13.5 36.5 16.7 18.3 0.37 12 700 6 50015⁄16 CTW015ZM2 13⁄8 35⁄8 3 313⁄16 27⁄16 11⁄16 7⁄16 17⁄32 17⁄16 21⁄32 25⁄32 0.92 3 150 1 750 34.9 92.1 76.2 96.8 61.9 27.0 11.1 13.5 36.5 16.7 19.8 0.41 14 000 7 8001 CTW100ZM 13⁄8 35⁄8 3 313⁄16 27⁄16 11⁄16 7⁄16 17⁄32 17⁄16 21⁄32 25⁄32 0.87 3 150 1 750 34.9 92.1 76.2 96.8 61.9 27.0 11.1 13.5 36.5 16.7 19.8 0.39 14 000 7 80011⁄8 CTW102ZM 15⁄8 41⁄8 31⁄2 43⁄8 23⁄4 15⁄32 3⁄8 17⁄32 15⁄8 25⁄32 7⁄8 1.10 4 380 2 520 41.3 104.8 88.9 111.1 69.9 29.4 9.5 13.5 41.3 19.8 22.2 0.50 19 500 11 20013⁄16 CTW103ZM 15⁄8 41⁄8 31⁄2 43⁄8 23⁄4 15⁄32 3⁄8 17⁄32 15⁄8 25⁄32 7⁄8 1.40 4 380 2 520 41.3 104.8 88.9 111.1 69.9 29.4 9.5 13.5 41.3 19.8 22.2 0.64 19 500 11 20011⁄4 CTW104ZMR 15⁄8 41⁄8 31⁄2 43⁄8 23⁄4 15⁄32 3⁄8 17⁄32 15⁄8 25⁄32 1 1.40 4 380 2 520 41.3 104.8 88.9 111.1 69.9 29.4 9.5 13.5 41.3 19.8 25.4 0.64 19 500 11 20011⁄4 CTW104ZM 15⁄8 41⁄8 31⁄2 413⁄16 3 15⁄32 3⁄8 17⁄32 15⁄8 25⁄32 1 1.70 5 730 3 440 41.3 104.8 88.9 122.2 76.2 29.4 9.5 13.5 41.3 19.8 25.4 0.77 25 500 15 30017⁄16 CTW107ZM 15⁄8 41⁄8 31⁄2 413⁄16 3 15⁄32 3⁄8 17⁄32 15⁄8 25⁄32 1 1.50 5 730 3 440 41.3 104.8 88.9 122.2 76.2 29.4 9.5 13.5 41.3 19.8 25.4 0.68 25 500 15 30011⁄2 CTW108ZM 115⁄16 41⁄2 4 51⁄2 37⁄16 11⁄2 9⁄16 11⁄16 115⁄16 11⁄16 13⁄16 2.40 6 900 4 270 49.2 114.3 101.6 139.7 87.3 38.1 14.3 17.5 49.2 27.0 30.0 1.10 30 700 19 000115⁄16 CTW115ZM 115⁄16 43⁄4 4 513⁄16 39⁄16 11⁄2 9⁄16 11⁄16 115⁄16 11⁄16 19⁄32 2.65 7 890 5 220 49.2 120.7 101.6 147.6 90.5 38.1 14.3 17.5 49.2 27.0 32.6 2.21 35 100 23 200



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20 CTW20SS 13⁄8 35⁄8 3 311⁄16 23⁄8 11⁄16 7⁄16 17⁄32 17⁄16 21⁄32 23⁄32 0.81 2 430 1 470 34.9 92.1 76.2 93.7 60.3 27.0 11.1 13.5 36.5 16.7 18.3 0.37 10 800 6 50025 CTW25SS 13⁄8 35⁄8 3 313⁄16 27⁄16 11⁄16 7⁄16 17⁄32 17⁄16 21⁄32 25⁄32 0.87 2 670 1 750 34.9 92.1 76.2 96.8 61.9 27.0 11.1 13.5 36.5 16.7 19.8 0.39 11 900 7 80030 CTW30SS 15⁄8 41⁄8 31⁄2 43⁄8 23⁄4 15⁄32 3⁄8 17⁄32 15⁄8 25⁄32 7⁄8 1.40 3 660 2 520 41.3 104.8 88.9 111.1 69.9 29.4 9.5 13.5 41.3 19.8 22.2 0.64 16 300 11 20035 CTW35SS 15⁄8 41⁄8 31⁄2 413⁄16 3 15⁄32 3⁄8 17⁄32 15⁄8 25⁄32 1 1.50 4 850 3 440 41.3 104.8 88.9 122.2 76.2 29.4 9.5 13.5 41.3 19.8 25.4 0.68 21 600 15 30040 CTW40SS 115⁄16 41⁄2 4 51⁄2 37⁄16 11⁄2 9⁄16 11⁄16 115⁄16 11⁄16 13⁄16 2.40 5 550 4 270 49.2 114.3 101.6 139.7 87.3 38.1 14.3 17.5 49.2 27.0 30.0 1.10 24 700 19 000

CTW composite wide slot take-up unitsStainless steel insert bearing



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3⁄4 CTW012SS 13⁄8 35⁄8 3 311⁄16 23⁄8 11⁄16 7⁄16 17⁄32 17⁄16 21⁄32 23⁄32 0.81 2 430 1 470 34.9 92.1 76.2 93.7 60.3 27.0 11.1 13.5 36.5 16.7 18.3 0.37 10 800 6 5001 CTW100SS 13⁄8 35⁄8 3 313⁄16 27⁄16 11⁄16 7⁄16 17⁄32 17⁄16 21⁄32 25⁄32 0.87 2 670 1 750 34.9 92.1 76.2 96.8 61.9 27.0 11.1 13.5 36.5 16.7 19.8 0.39 11 900 7 80013⁄16 CTW103SS 15⁄8 41⁄8 31⁄2 43⁄8 23⁄4 15⁄32 3⁄8 17⁄32 15⁄8 25⁄32 7⁄8 1.40 3 660 2 250 41.3 104.8 88.9 111.1 69.9 29.4 9.5 13.5 41.3 19.8 22.2 0.64 16 300 11 20011⁄4 CTW104SSR 15⁄8 41⁄8 31⁄2 43⁄8 23⁄4 15⁄32 3⁄8 17⁄32 15⁄8 25⁄32 1 1.70 3 660 2 520 41.3 104.8 88.9 111.1 69.9 29.4 9.5 13.5 41.3 19.8 25.4 0.77 16 300 11 20011⁄4 CTW104SS 15⁄8 41⁄8 31⁄2 413⁄16 3 15⁄32 3⁄8 17⁄32 15⁄8 25⁄32 1 1.70 4 850 3 440 41.3 104.8 88.9 122.2 76.2 29.4 9.5 13.5 41.3 19.8 25.4 0.77 21 600 15 30013⁄8 CTW106SS 15⁄8 41⁄8 31⁄2 413⁄16 3 15⁄32 3⁄8 17⁄32 15⁄8 25⁄32 1 1.60 4 850 3 440 41.3 104.8 88.9 122.2 76.2 29.4 9.5 13.5 41.3 19.8 25.4 0.73 21 600 15 30017⁄16 CTW107SS 15⁄8 41⁄8 31⁄2 413⁄16 3 15⁄32 3⁄8 17⁄32 15⁄8 25⁄32 1 1.50 4 850 3 440 41.3 104.8 88.9 122.2 76.2 29.4 9.5 13.5 41.3 19.8 25.4 0.68 21 600 15 30011⁄2 CTW108SS 115⁄16 41⁄2 4 51⁄2 37⁄16 11⁄2 9⁄16 11⁄16 115⁄16 11⁄16 13⁄16 2.40 5 550 4 270 49.2 114.3 101.6 139.7 87.3 38.1 14.3 17.5 49.2 27.0 30.0 1.10 24 700 19 000




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HACCP-programcompatibleMRC stainless take-up frames help sup-port the stringent sanitation requirements of Hazard Analysis Critical Control Point (HACCP) programs. In addition to being corrosion-resistant, the frames have no narrow gaps or crevices that can trap food contaminants. Also, openings in the side and bottom of MRC frames facilitate quick draining during washdowns.

MRC take-up frames are constructed of 304 stainless steel and can be equipped with Marathon series composite mounted bearing units. They are designed for conveyor systems used in meat, poultry, fruit, vegetable, beverage and other food industry operations. Normally employed at the idler end of conveyor systems, take-up frames support conveyor shafts and act to produce the correct conveyor belt tension. Unlike many take-up frames fabricated on site from

Stainless steel take-up frames

Narrowslotstainlesssteeltake-upframes(alldimensionsareininches)

Partnumber Framesize Boltpatternfor3/8”bolts ShaftC/Ldistance Frameacceptstheseshaftsizes:

Travel A B C D E F Bearingbore

TFN210SS 3 3 8 61⁄2

TFN210SS 6 6 33⁄4 11 .55 13⁄4 9 125⁄64 3⁄4”, 20mm, 1”, 25mmTFN210SS 9 9 15 121⁄2

TFN308SS 3 3 9 71⁄2

TFN308SS 6 6 441⁄64 12 .55 23⁄4 101⁄2 127⁄32 13⁄16”, 30mm, 11⁄4”,TFN308SS 9 9 15 131⁄2 13⁄8”, 35mm, 17⁄16”TFN308SS 12 12 18 161⁄2

TFN400SS 3 3 10 81⁄2

TFN400SS 6 6 13 111⁄2

TFN400SS 9 9 51⁄4 16 .55 23⁄4 141⁄2 163⁄64 11⁄2”, 40mm, 115⁄16”TFN400SS 12 12 19 171⁄2

TFN400SS 18 18 25 231⁄2

non-stainless materials, MRC stainless take-up frames feature sturdy single-piece construction and resist corrosion from fre-quent washdowns and harsh food industry chemicals. MRC take-up frames mount securely to conveyor systems via four mounting bolts. The frames and take-up bearing units may be adapted to fit most existing conveyor configurations.

A D

ECFB

23

Wideslotstainlesssteeltake-upframes(alldimensionsareininches)

Partnumber Framesize Boltpatternfor3/8”bolts ShaftC/Ldistance Frameacceptstheseshaftsizes:

Travel A B C D E F Bearingbore

TFW300SS 3 3 8 61⁄2

TFW300SS 6 6 41⁄8 11 .55 21⁄4 91⁄2 125⁄64 3⁄4”, 20mm, 1”, 25mmTFW300SS 9 9 14 121⁄2

TFW300SS 12 12 17 151⁄2

TFW308SS 3 3 9 71⁄2

TFW308SS 6 6 12 101⁄2

TFW308SS 9 9 441⁄64 15 .55 23⁄4 121⁄2 127⁄32 13⁄16”, 30mm, 11⁄4”,TFW308SS 12 12 18 161⁄2 13⁄8”, 35mm, 17⁄16”TFW308SS 18 18 24 221⁄2

TFW400SS 3 3 10 81⁄2

TFW400SS 6 6 13 111⁄2

TFW400SS 9 9 51⁄4 16 .55 23⁄4 141⁄2 163⁄64 11⁄2”, 40mm, 115⁄16”TFW400SS 12 12 19 171⁄2

TFW400SS 18 18 25 231⁄2

MarathonseriesbearingunitsMarathon series bearing units are avail-able separately and may be mounted in MRC take-up frames. These units feature a lightweight thermoplastic housing that resists corrosion from water, citric acid, cleaning agents and most other food indus-try chemicals. The unit’s double-protection sealing arrangement, consisting of an AISI 304 stainless steel insert seal and an AISI

A D

ECFB

304 stainless steel flinger, protects against both wet and dry contaminants. The units are lubricated for life with a USDA food-grade grease. Marathon units are available with either a corrosion-resistant ZMaRC-coated insert bearing or a stainless steel bearing.

24

ZPB ZMaRC-coated cast iron pillow block unitsZMaRC-coated insert bearingHDi series

*MetricunitsaresuppliedthroughtheMade-To-Order(MTO)ProgramMRC Marathon series mounted bearing units are greased and sealed for life. MRC does not recommend regreasing. However, in the event that regreasing is required, a stainless steel grease zerk is packaged with each unit.



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in in in in in in in in in in in in in lb lbf lbf mm mm mm mm mm mm mm mm mm mm mm mm kg N N

3⁄4 ZPB012ZM 11⁄4 53⁄64 21⁄2 15⁄16 35⁄64 315⁄32 411⁄64 5 13⁄16 29⁄64 3⁄8 23⁄32 1.40 2 860 1 470 32.0 21.0 64.0 33.3 14.0 88.0 106.0 127.0 20.5 11.5 10.0 18.3 0.64 12 700 6 55015⁄16 ZPB015ZM 17⁄16 7⁄8 23⁄4 17⁄16 5⁄8 345⁄64 421⁄64 51⁄8 49⁄64 29⁄64 3⁄8 25⁄32 1.75 3 150 1 750 36.0 22.0 70.0 36.5 16.0 94.0 110.0 130.0 19.5 11.5 10.0 19.8 0.79 14 000 7 8001 ZPB100ZM 17⁄16 7⁄8 23⁄4 17⁄16 5⁄8 345⁄64 421⁄64 51⁄8 49⁄64 29⁄64 3⁄8 25⁄32 1.70 3 150 1 750 36.0 22.0 70.0 36.5 16.0 94.0 110.0 130.0 19.5 11.5 10.0 19.8 0.77 14 000 7 80011⁄8 ZPB102ZM 137⁄64 1 315⁄64 111⁄16 21⁄32 41⁄4 5 563⁄64 59⁄64 35⁄64 1⁄2 7⁄8 2.85 4 380 2 520 40.0 25.4 82.0 42.9 16.5 108.0 127.0 152.0 23.5 14.0 12.7 22.2 1.30 19 500 11 20013⁄16 ZPB103ZM 137⁄64 1 315⁄64 111⁄16 21⁄32 41⁄4 5 563⁄64 59⁄64 35⁄64 1⁄2 7⁄8 2.85 4 380 2 520 40.0 25.4 82.0 42.9 16.5 108.0 127.0 152.0 23.5 14.0 12.7 22.2 1.30 19 500 11 20011⁄4 ZPB104ZMR 137⁄64 1 315⁄64 111⁄16 21⁄32 41⁄4 5 563⁄64 59⁄64 35⁄64 1⁄2 7⁄8 2.75 4 380 2 520 40.0 25.4 82.0 42.9 16.5 108.0 127.0 152.0 23.5 14.0 12.7 22.2 1.25 19 500 11 20011⁄4 ZPB104ZM 149⁄64 11⁄8 321⁄32 17⁄8 3⁄4 443⁄64 515⁄64 619⁄64 53⁄64 35⁄64 1⁄2 1 3.65 5 730 3 440 45.0 28.0 93.0 47.6 19.0 119.0 133.0 160.0 21.0 14.0 12.7 25.4 1.65 25 500 15 30017⁄16 ZPB107ZM 149⁄64 11⁄8 321⁄32 17⁄8 3⁄4 443⁄64 515⁄64 619⁄64 53⁄64 35⁄64 1⁄2 1 3.40 5 730 3 440 45.0 28.0 93.0 47.6 19.0 119.0 133.0 160.0 21.0 14.0 12.7 25.4 1.55 25 500 15 30011⁄2 ZPB108ZM 157⁄64 17⁄32 329⁄32 115⁄16 3⁄4 459⁄64 53⁄4 657⁄64 15⁄16 35⁄64 1⁄2 13⁄16 4.30 6 900 4 270 48.0 31.0 99.0 49.2 19.0 125.0 146.0 175.0 24.0 14.0 12.7 30.0 1.95 30 700 19 000115⁄16 ZPB115ZM 21⁄8 13⁄8 41⁄2 21⁄4 7⁄8 555⁄64 61⁄2 8 11⁄16 45⁄64 5⁄8 19⁄32 6.30 7 890 5 220 54.0 35.0 114.0 57.2 22.0 149.0 165.0 203.0 27.0 18.0 16.0 32.6 2.85 35 100 23 200



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20 ZPB20ZM 11⁄4 53⁄64 21⁄2 15⁄16 35⁄64 315⁄32 411⁄64 5 13⁄16 29⁄64 3⁄8 23⁄32 1.40 2 860 1 470

32.0 21.0 64.0 33.3 14.0 88.0 106.0 127.0 20.5 11.5 10.0 18.3 0.64 12 700 6 55025 ZPB25ZM 17⁄16 7⁄8 23⁄4 17⁄16 5⁄8 345⁄64 421⁄64 51⁄8 49⁄64 29⁄64 3⁄8 25⁄32 1.70 3 150 1 750 36.0 22.0 70.0 36.5 16.0 94.0 110.0 130.0 19.5 11.5 10.0 19.8 0.77 14 000 7 80030 ZPB30ZM 137⁄64 1 315⁄64 111⁄16 21⁄32 41⁄4 5 563⁄64 59⁄64 35⁄64 1⁄2 7⁄8 2.85 4 380 2 520 40.0 25.4 82.0 42.9 16.5 108.0 127.0 152.0 23.5 14.0 12.7 22.2 1.30 19 500 11 20035 ZPB35ZM 149⁄64 11⁄8 321⁄32 17⁄8 3⁄4 443⁄64 515⁄64 619⁄64 53⁄64 35⁄64 1⁄2 1 3.65 5 730 3 440 45.0 28.0 93.0 47.6 19.0 119.0 133.0 160.0 21.0 14.0 12.7 25.4 1.65 25 500 15 30040 ZPB40ZM 157⁄64 17⁄32 329⁄32 115⁄16 3⁄4 459⁄64 53⁄4 657⁄

64 15⁄16 35⁄64 1⁄2 13⁄16 4.30 6 900 4 270 48.0 31.0 99.0 49.2 19.0 125.0 146.0 175.0 24.0 14.0 12.7 30.0 1.95 30 700 19 000

25

Z2F ZMaRC-coated cast iron two-bolt flange unitsZMaRC-coated insert bearingHDi series



Shaft Flangeunit Basicradialdia designation loadratingd A1 A2 H J L N G T Mass dynamic C� static C0

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20 Z2F20ZM 31⁄32 7⁄16 413⁄32 317⁄32 23⁄8 7⁄16 3⁄8 115⁄32 0.90 2 860 1 470 24.6 11.1 111.9 89.7 60.3 11.1 10.0 37.3 0.41 12 700 6 55025 Z2F25ZM 13⁄16 5⁄8 457⁄64 357⁄64 23⁄4 1⁄2 7⁄16 117⁄32 1.30 3 150 1 750 30.2 15.9 123.8 98.8 69.9 12.7 11.0 38.8 0.59 14 000 7 80030 Z2F30ZM 19⁄32 17⁄32 59⁄16 419⁄32 31⁄8 1⁄2 7⁄16 121⁄32 2.05 4 380 2 520 32.5 13.5 141.3 116.7 79.4 12.7 11.0 42.2 0.93 19 500 11 20035 Z2F35ZM 111⁄32 9⁄16 61⁄8 51⁄8 35⁄8 9⁄16 1⁄2 127⁄32 2.85 5 730 3 440 34.1 14.3 155.6 130.2 92.1 14.3 12.7 46.4 1.30 25 500 15 30040 Z2F40ZM 117⁄32 9⁄16 63⁄4 521⁄32 4 9⁄16 1⁄2 21⁄8 3.75 6 900 4 270 38.9 14.3 171.5 143.7 101.6 14.3 12.7 54.2 1.70 30 700 19 000


Shaft Flangeunit Basicradialdia designation loadratingd A1 A2 H J L N G T Mass dynamic C� static C0

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3⁄4 Z2F012ZM 31⁄32 7⁄16 413⁄32 317⁄32 23⁄8 7⁄16 3⁄8 115⁄32 0.90 2 860 1 470 24.6 11.1 111.9 89.7 60.3 11.1 10.0 37.3 0.41 12 700 6 55015⁄16 Z2F015ZM 13⁄16 5⁄8 457⁄64 357⁄64 23⁄4 1⁄2 7⁄16 117⁄32 1.35 3 150 1 750 30.2 15.9 123.8 98.8 69.9 12.7 11.0 38.8 0.61 14 000 7 8001 Z2F100ZM 13⁄16 5⁄8 457⁄64 357⁄64 23⁄4 1⁄2 7⁄16 117⁄32 1.30 3 150 1 750 30.2 15.9 123.8 98.8 69.9 12.7 11.0 38.8 0.59 14 000 7 80011⁄8 Z2F102ZM 19⁄32 17⁄32 59⁄16 419⁄32 31⁄8 1⁄2 7⁄16 121⁄32 2.05 4 380 2 520 32.5 13.5 141.3 116.7 79.4 12.7 11.0 42.2 0.93 19 500 11 20013⁄16 Z2F103ZM 19⁄32 17⁄32 59⁄16 419⁄32 31⁄8 1⁄2 7⁄16 121⁄32 2.00 4 380 2 520 32.5 13.5 141.3 116.7 79.4 12.7 11.0 42.2 0.91 19 500 11 20011⁄4 Z2F104ZMR 19⁄32 17⁄32 59⁄16 419⁄32 31⁄8 1⁄2 7⁄16 121⁄32 1.95 4 380 2 520 32.5 13.5 141.3 116.7 79.4 12.7 11.0 42.2 0.88 19 500 11 20011⁄4 Z2F104ZM 111⁄32 9⁄16 61⁄8 51⁄8 35⁄8 9⁄16 1⁄2 127⁄32 2.85 5 730 3 440 34.1 14.3 155.6 130.2 92.1 14.3 12.7 46.4 1.30 25 500 15 30017⁄16 Z2F107ZM 111⁄32 9⁄16 61⁄8 51⁄8 35⁄8 9⁄16 1⁄2 127⁄32 2.75 5 730 3 440 34.1 14.3 155.6 130.2 92.1 14.3 12.7 46.4 1.25 25 500 15 30011⁄2 Z2F108ZM 117⁄32 9⁄16 63⁄4 521⁄32 4 9⁄16 1⁄2 21⁄8 3.75 6 900 4 270 38.9 14.3 171.5 143.7 101.6 14.3 12.7 54.2 1.70 30 700 19 000115⁄16 Z2F115ZM 123⁄32 25⁄32 77⁄16 63⁄16 49⁄16 5⁄8 9⁄16 23⁄8 5.05 7 890 5 220 43.7 19.8 188.9 157.2 115.9 15.9 14.0 60.6 2.30 35 100 23 200


26

Z4F ZMaRC-coated cast iron four-bolt flange unitsZMaRC-coated insert bearingHDi series



Shaft Flange Mass Basicradialdia unit loadratingd designation A1 A2 J L N G T dynamic C� static C0

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in in in in in in in in lb lbf lbf mm mm mm mm mm mm mm kg N N

3⁄4 Z4F012ZM 11⁄8 5⁄8 21⁄2 33⁄8 7⁄16 3⁄8 117⁄32 1.35 2 860 1 470 28.6 15.9 63.5 85.7 11.1 10.0 38.8 0.61 12 700 6 55015⁄16 Z4F015ZM 13⁄16 5⁄8 23⁄4 33⁄4 1⁄2 7

⁄16 117⁄32 1.85 3 150 1 750 30.2 15.9 69.9 95.3 12.7 11.0 38.8 0.84 14 000 7 8001 Z4F100ZM 13⁄16 5⁄8 23⁄4 33⁄4 1⁄2 7⁄16 117⁄32 1.80 3 150 1 750 30.2 15.9 69.9 95.3 12.7 11.0 38.8 0.82 14 000 7 80011⁄8 Z4F102ZM 19⁄32 19⁄32 31⁄4 41⁄4 1⁄2 7⁄16 121⁄32 2.65 4 380 2 520 32.5 15.1 82.6 108.0 12.7 11.0 42.2 1.20 19 500 11 20013⁄16 Z4F103ZM 19⁄32 19⁄32 31⁄4 41⁄4 1⁄2 7⁄16 121⁄32 2.65 4 380 2 520 32.5 15.1 82.6 108.0 12.7 11.0 42.2 1.20 19 500 11 20011⁄4 Z4F104ZMR 19⁄32 19⁄32 31⁄4 41⁄4 1⁄2 7⁄16 121⁄32 2.65 4 380 2 520 32.5 15.1 82.6 108.0 12.7 11.0 42.2 1.20 19 500 11 20011⁄4 Z4F104ZM 13⁄8 5⁄8 35⁄8 45⁄8 9⁄16 1⁄2 127⁄32 3.30 5 730 3 440 34.9 15.9 92.1 117.5 14.3 12.7 46.4 1.50 25 500 15 30017⁄16 Z4F107ZM 13⁄8 5⁄8 35⁄8 45⁄8 9⁄16 1⁄2 127⁄32 3.20 5 730 3 440 34.9 15.9 92.1 117.5 14.3 12.7 46.4 1.45 25 500 15 30011⁄2 Z4F108ZM 117⁄32 21⁄32 4 51⁄8 9⁄16 1⁄2 21⁄8 4.30 6 900 4 270 38.9 16.7 101.6 130.2 14.3 12.7 54.2 2.00 30 700 19 000115⁄16 Z4F115ZM 13⁄4 25⁄32 43⁄8 55⁄8 5⁄8 9⁄16 27⁄32 5.60 7 890 5 220 44.5 19.8 111.1 142.9 15.9 14.0 56.6 2.55 35 100 23 200

Formetricshafts20mm-40mm*

Shaft Flange Mass Basicradialdia unit loadratingd designation A1 A2 J L N G T dynamic C� static C0

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in in in in in in in in lb lbf lbf mm mm mm mm mm mm mm kg N N

20 Z4F20ZM 11⁄8 5⁄8 21⁄2 33⁄8 7⁄16 3⁄8 117⁄32 1.35 2 860 1 470 28.6 15.9 63.5 85.7 11.1 10.0 38.8 0.61 12 700 6 55025 Z4F25ZM 13⁄16 5⁄8 23⁄4 33⁄4 1⁄2 7⁄16 117⁄32 1.80 3 150 1 750 30.2 15.9 69.9 95.3 12.7 11.0 38.8 0.82 14 000 7 80030 Z4F30ZM 19⁄32 19⁄32 31⁄4 41⁄4 1⁄2 7⁄16 121⁄32 2.65 4 380 2 520 32.5 15.1 82.6 108.0 12.7 11.0 42.2 1.20 19 500 11 20035 Z4F35ZM 13⁄8 5⁄8 35⁄8 45⁄8 9⁄16 1⁄2 127⁄32 3.30 5 730 3 440 34.9 15.9 92.1 117.5 14.3 12.7 46.4 1.50 25 500 15 30040 Z4F40ZM 117⁄32 21⁄32 4 51⁄8 9⁄16 1⁄2 21⁄8 4.30 6 900 4 270 38.9 16.7 101.6 130.2 14.3 12.7 54.2 2.00 30 700 19 000

27

ZTB ZMaRC-coated cast iron tapped base unitsZMaRC-coated insert bearingHDi series



Shaft Tapped-base Basicradialdia unit loadratingd designation A1 H H1 J L N G T Mass dynamic C� static C0

�


20 ZTB20ZM 11⁄2 29⁄16 15⁄16 2 25⁄8 1⁄2 3⁄8 –16 23⁄32 1.80 2 860 1 470 38.1 65.1 33.3 50.8 66.7 12.7 3⁄8 –16 18.3 0.82 12 700 6 55025 ZTB25ZM 11⁄2 213⁄16 17⁄16 2 3 1⁄2 3⁄8 –16 25⁄32 2.00 3 150 1 750 38.1 71.4 36.5 50.8 76.2 12.7 3⁄8 –16 19.8 0.91 14 000 7 80030 ZTB30ZM 11⁄2 33⁄8 111⁄16 3 37⁄8 5⁄8 7⁄16 –14 7⁄8 3.50 4 380 2 520 38.1 85.7 42.9 76.2 98.4 15.9 7⁄16 –14 22.2 1.59 19 500 11 20035 ZTB35ZM 17⁄8 33⁄4 17⁄8 31⁄4 41⁄8 3⁄4 1⁄2 –13 1 4.50 5 730 3 440 47.6 95.3 47.6 82.6 104.8 19.1 1⁄2 –13 25.4 2.05 25 500 15 30040 ZTB40ZM 17⁄8 315⁄16 115⁄16 31⁄2 41⁄2 3⁄4 1⁄2 –13 13⁄16 6.00 6 900 4 270 47.6 100.0 49.2 88.9 114.3 19.1 1⁄2 –13 30.0 2.73 30 700 19 000


Shaft Tapped-baseunit Basicradialdia designation loadratingd A1 H H1 J L F G S1 Mass dynamic C� static C0

�


3⁄4 ZTB012ZM 11⁄2 29⁄16 15⁄16 2 25⁄8 1⁄2 3⁄8 –16 23⁄32 1.80 2 860 1 470 38.1 65.1 33.3 50.8 66.7 12.7 3⁄8 –16 18.3 0.82 12 700 6 55015⁄16 ZTB015ZM 11⁄2 213⁄16 17⁄16 2 3 1⁄2 3⁄8 –16 25⁄32 2.05 3 150 1 750 38.1 71.4 36.5 50.8 76.2 12.7 3⁄8 –16 19.8 0.93 14 000 7 8001 ZTB100ZM 11⁄2 213⁄16 17⁄16 2 3 1⁄2 3⁄8 –16 25⁄32 2.00 3 150 1 750 38.1 71.4 36.5 50.8 76.2 12.7 3⁄8 –16 19.8 0.91 14 000 7 80011⁄8 ZTB102ZM 11⁄2 33⁄8 111⁄16 3 37⁄8 5⁄8 7⁄16 –14 7⁄8 3.50 4 380 2 520 38.1 85.7 42.9 76.2 98.4 15.9 7⁄16 –14 22.2 1.59 19 500 11 20013⁄16 ZTB103ZM 11⁄2 33⁄8 111⁄16 3 37⁄8 5⁄8 7⁄16 –14 7⁄8 3.50 4 380 2 520 38.1 85.7 42.9 76.2 98.4 15.9 7⁄16 –14 22.2 1.59 19 500 11 20011⁄4 ZTB104ZMR 11⁄2 33⁄8 111⁄16 3 37⁄8 5⁄8 7⁄16 –14 7⁄8 3.50 4 380 2 520 38.1 85.7 42.9 76.2 98.4 15.9 7⁄16 –14 22.2 1.59 19 500 11 20011⁄4 ZTB104ZM 17⁄8 33⁄4 17⁄8 31⁄4 41⁄8 3⁄4 1⁄2 –13 1 4.50 5 730 3 440 47.6 95.3 47.6 82.6 104.8 19.1 1⁄2 –13 25.4 2.05 25 500 15 30017⁄16 ZTB107ZM 17⁄8 33⁄4 17⁄8 31⁄4 41⁄8 3⁄4 1⁄2 –13 1 4.50 5 730 3 440 47.6 95.3 47.6 82.6 104.8 19.1 1⁄2 –13 25.4 2.05 25 500 15 30011⁄2 ZTB108ZM 17⁄8 315⁄16 115⁄16 31⁄2 41⁄2 3⁄4 1⁄2 –13 13⁄16 6.00 6 900 4 270 47.6 100.0 49.2 88.9 114.3 19.1 1⁄2 –13 30.0 2.73 30 700 19 000115⁄16 ZTB115ZM 2 45⁄8 21⁄4 4 55⁄16 7⁄8 5⁄8 –11 19⁄32 8.00 7 890 5 220 50.8 117.5 57.2 101.6 134.9 22.2 5⁄8 –11 32.6 3.64 35 100 23 200


28


Shaft Pillow J J Basicradialdia unit loadratingd designation A A1 H H1 H2 Min Max L N N 1 G S1 dynamic C� static C0

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in in in in in in in in in in in in in lbf lbf mm mm mm mm mm mm mm mm mm mm mm mm N N

20 SPB20SS 11/4 3/4 413/32 15/16 5/8 37/16 43/16 5 13/16 29/64 3/8 23/32 2430 1470 32.0 19.0 111.9 33.3 16.0 87.3 106.4 127.0 20.5 11.5 10.0 18.3 10800 655025 SPB25SS 17/16 7/8 457/64 17/16 5/8 311/16 45/16 51/8 3/4 29/64 3/8 25/32 2670 1750 36.0 22.0 123.8 36.5 16.0 93.7 109.5 130.0 19.1 11.5 10.0 19.8 11900 780030 SPB30SS 19/16 1 59/16 111/16 21/32 41/4 5 6 15/16 9/16 1/2 7/8 3660 2520 39.7 25.4 141.3 42.9 16.5 108.0 127.0 152.4 23.8 14.3 12.7 22.2 16300 1120035 SPB35SS 13/4 11/8 61/8 17/8 3/4 411/16 51/4 65/16 27/32 9/16 1/2 1 4850 3440 44.5 28.6 155.6 47.6 19.0 119.1 133.4 160.3 21.4 14.3 12.7 25.4 21600 1530040 SPB40SS 17/8 11/4 63/4 115/16 3/4 415/16 53/4 67/8 31/32 9/16 1/2 13/16 5550 4270 47.6 31.2 171.5 49.2 19.0 125.4 146.0 174.6 24.6 14.3 12.7 30.0 24700 19000

SPB cast stainless steel pillow block unitsStainless steel insert bearingXDS series


Shaft Pillow J J Basicradialdia unit loadratingd designation A A1 H H1 H2 Min Max L N N 1 G S1 dynamic C� static C0

�

in in in in in in in in in in in in in lbf lbf mm mm mm mm mm mm mm mm mm mm mm mm N N

3/4 SPB012SS 11/4 3/4 413/32 15/16 5/8 37/16 43/16 5 13/16 29/64 3/8 23/32 2430 1470 32.0 19.0 111.9 33.3 16.0 87.3 106.4 127.0 20.5 11.5 10.0 18.3 10800 65501 SPB100SS 17/16 7/

8 457/64 17/16 5/8 311/16 45/16 51/8 3/4 29/64 3/8 25/32 2670 1750 36.0 22.0 123.8 36.5 16.0 93.7 109.5 130.0 19.1 11.5 10.0 19.8 11900 780013/16 SPB103SS 19/16 1 59/16 111/16 21/32 41/4 5 6 15/16 9/16 1/2 7/8 3660 2520 39.7 25.4 141.3 42.9 16.5 108.0 127.0 152.4 23.8 14.3 12.7 22.2 16300 1120011/4 SPB104SSR 19/16 1 59/16 1-1/16 21/32 41/4 5 6 15/16 9/16 1/2 7/8 3660 2520 39.7 25.4 141.3 42.9 16.5 108.0 127.0 152.4 23.8 14.3 12.7 22.2 16300 1120011/4 SPB104SS 13/4 11/8 61/8 17/8 3/4 411/16 51/4 65/16 27/32 9/16 1/2 1 4850 3440 44.5 28.6 155.6 47.6 19.0 119.1 133.4 160.3 21.4 14.3 12.7 25.4 21600 1530013/8 SPB106SS 13/4 11/8 61/8 17/8 3/4 411/16 51/4 65/16 27/32 9/16 1/2 1 4850 3440 44.5 28.6 155.6 47.6 19.0 119.1 133.4 160.3 21.4 14.3 12.7 25.4 21600 1530017/16 SPB107SS 13/4 11/8 61/8 17/8 3/4 411/16 51/4 65/16 27/32 9/16 1/2 1 4850 3440 44.5 28.6 155.6 47.6 19.0 119.1 133.4 160.3 21.4 14.3 12.7 25.4 21600 1530011/2 SPB108SS 17/8 11/4 63/4 115/16 3/4 415/16 53/4 67/8 31/32 9/16 1/2 13/16 5550 4270 47.6 31.2 171.5 49.2 19.0 125.4 146.0 174.6 24.6 14.3 12.7 30.0 24700 19000


A1

H

H1

A

S1

d

N1

H1

N

G

J

L

29

S2F cast stainless steel two-bolt flange unitsStainless steel insert bearingXDS series


Shaft Flange Basicradialdia unit loadratingd designation A1 A2 H J L N G T dynamic C� static C0

�

in in in in in in in in in lbf lbf mm mm mm mm mm mm mm mm N N

3/4 S2F012SS 11/64 7/16 413/32 317/32 23/8 7/16 3/8 19/32 2430 1470 25.8 11.1 111.9 89.7 60.3 11.1 10.0 32.5 10800 65501 S2F100SS 15/32 17/32 47/8 357/64 23/4 1/2 7/16 17/16 2670 1750 29.4 13.5 123.4 98.8 69.9 12.7 11.0 36.5 11900 780013/16 S2F103SS 111/32 17/32 59/16 419/32 31/8 1/2 7/16 121/32 3660 2520 34.1 13.5 141.3 116.7 79.4 12.7 11.0 42.1 16300 1120011/4 S2F104SSR 111/32 17/32 59/16 419/32 31/8 1/2 7/16 121/32 3660 2520 34.1 13.5 141.3 116.7 79.4 12.7 11.0 42.1 16300 1120011/4 S2F104SS 113/32 9/16 61/8 51/8 35/8 9/16 1/2 113/16 4850 3440 35.7 14.3 155.6 130.2 92.1 14.3 12.7 46.0 21600 1530013/8 S2F106SS 113/32 9/16 61/8 51/8 35/8 9/16 1/2 113/16 4850 3440 35.7 14.3 155.6 130.2 92.1 14.3 12.7 46.0 21600 1530017/16 S2F107SS 113/32 9/16 61/8 51/8 35/8 9/16 1/2 113/16 4850 3440 35.7 14.3 155.6 130.2 92.1 14.3 12.7 46.0 21600 1530011/2 S2F108SS 117/32 9/16 63/4 521/32 4 9/16 1/2 23/32 5550 4270 38.9 14.3 171.5 143.7 101.6 14.3 12.7 53.0 24700 19000



A1

T

d

A2

G

L

J H

N


Shaft Flange Basicradialdia unit loadratingd designation A1 A2 H J L N G T dynamic C� static C0

�

in in in in in in in in in lbf lbf mm mm mm mm mm mm mm mm N N

20 S2F20SS 11/64 7/16 413/32 317/32 23/8 7/16 3/8 19/32 2430 1470 25.8 11.1 111.9 89.7 60.3 11.1 10.0 32.5 10800 655025 S2F25SS 15/32 17/32 47/8 357/64 23/4 1/2 7/16 17/16 2670 1750 29.4 13.5 123.4 98.8 69.9 12.7 11.0 36.5 11900 780030 S2F30SS 111/32 17/32 59/16 419/32 31/8 1/2 7/16 121/32 3660 2520 34.1 13.5 141.3 116.7 79.4 12.7 11.0 42.1 16300 1120035 S2F35SS 113/32 9/16 61/8 51/8 35/8 9/16 1/2 113/16 4850 3440 35.7 14.3 155.6 130.2 92.1 14.3 12.7 46.0 21600 1530040 S2F40SS 117/32 9/16 63/4 521/32 4 9/16 1/2 23/32 5550 4270 38.9 14.3 171.5 143.7 101.6 14.3 12.7 53.0 24700 19000

30

S4F cast stainless steel four-bolt flange unitsStainless steel insert bearingXDS series


A1

T

d

G

A2L

J

N


Shaft Flange Basicradialdia unit loadratingd designation A1 A2 J L N G T dynamic C� static C0

�

in in in in in in in in lbf lbf mm mm mm mm mm mm mm N N

3/4 S4F012SS 11/64 7/16 21/2 33/8 7/16 3/8 115/32 2430 1470 25.8 11.1 63.5 85.7 11.1 10.0 37.3 10800 65501 S4F100SS 15/32 17/32 23/4 33/4 29/64 7/16 117/32 2670 1750 29.4 13.5 69.9 95.3 11.5 11.0 38.9 11900 780013/16 S4F103SS 111/32 17/32 31/4 41/4 1/2 7/16 121/32 3660 2520 34.1 13.5 82.6 108.0 12.7 11.0 42.1 16300 1120011/4 S4F104SSR 111/32 17/32 31/4 41/4 1/2 7/16 121/32 3660 2520 34.1 13.5 82.6 108.0 12.7 11.0 42.1 16300 1120011/4 S4F104SS 113/32 9/16 35/8 45/8 9/16 1/2 113/16 4850 3440 35.7 14.3 92.1 117.5 14.3 12.7 46.0 21600 1530013/8 S4F106SS 113/32 9/16 35/8 45/8 9/16 1/2 113/16 4850 3440 35.7 14.3 92.1 117.5 14.3 12.7 46.0 21600 1530017/16 S4F107SS 113/32 9/16 35/8 45/8 9/16 1/2 113/16 4850 3440 35.7 14.3 92.1 117.5 14.3 12.7 46.0 21600 1530011/2 S4F108SS 117/32 9/16 4 51/8 9/16 1/2 23/32 5550 4270 38.9 14.3 101.6 130.2 14.3 12.7 53.2 24700 19000


Shaft Flange Basicradialdia unit loadratingd designation A1 A2 J L N G T dynamic C� static C0

�

in in in in in in in in lbf lbf mm mm mm mm mm mm mm N N

20 S4F20SS 11/64 7/16 21/2 33/8 7/16 3/8 115/32 2430 1470 25.8 11.1 63.5 85.7 11.1 10.0 37.3 10800 655025 S4F25SS 15/32 17/32 23/4 33/4 29/64 7/16 117/32 2670 1750 29.4 13.5 69.9 95.3 11.5 11.0 38.9 11900 780030 S4F30SS 111/32 17/32 31/4 41/4 1/2 7/16 121/32 3660 2520 34.1 13.5 82.6 108.0 12.7 11.0 42.1 16300 1120035 S4F35SS 113/32 9/16 35/8 45/8 9/16 1/2 113/16 4850 3440 35.7 14.3 92.1 117.5 14.3 12.7 46.0 21600 1530040 S4F40SS 117/32 9/16 4 51/8 9/16 1/2 23/32 5550 4270 38.9 14.3 101.6 130.2 14.3 12.7 53.2 24700 19000

31


STB cast stainless steel tapped-base unitsStainless steel insert bearingXDS series


Shaft Tapped-base Basicradialdia unit loadratingd designation A1 H H1 J L F G S1 dynamic C� static C0

�

in in in in in in in UNC in lbf lbf mm mm mm mm mm mm Threads mm N N

3/4 STB012SS 11/8 21/2 15/16 2 25/8 1/2 3/8-16 23/32 2430 1470 28.6 63.5 33.3 50.8 66.7 12.7 18.3 10800 65501 STB100SS 11/4 23/4 17/16 2 3 1/2 3/8-16 25/32 2670 1750 31.8 69.9 36.5 50.8 76.2 12.7 19.8 11900 780013/16 STB103SS 11/2 31/4 111/16 3 37/8 5/8 7/16-14 7/8 3660 2520 38.1 82.6 42.9 76.2 98.4 15.9 22.2 16300 1120011/4 STB104SSR 11/2 31/4 111/16 3 37/8 5/8 7/16-14 7/8 3660 2520 38.1 82.6 42.9 76.2 98.4 15.9 22.2 16300 1120011/4 STB104SS 11/2 35/8 17/8 31/4 41/8 3/4 1/2-13 1 4850 3440 38.1 92.1 47.6 82.6 104.8 19.1 25.4 21600 1530013/8 STB106SS 11/2 35/8 17/8 31/4 41/8 3/4 1/2-13 1 4850 3440 38.1 92.1 47.6 82.6 104.8 19.1 25.4 21600 1530017/16 STB107SS 11/2 35/8 17/8 31/4 41/8 3/4 1/2-13 1 4850 3440 38.1 92.1 47.6 82.6 104.8 19.1 25.4 21600 1530011/2 STB108SS 15/8 315/16 115/16 31/2 41/2 3/4 1/2-13 13/16 5550 4270 41.3 100.0 49.2 88.9 114.3 19.1 30.0 24700 19000



A

H1

S1

Hd

G

F

J

L


Shaft Tapped-base Basicradialdia unit loadratingd designation A1 H H1 J L F G S1 dynamic C� static C0

�

in in in in in in in UNC in lbf lbf mm mm mm mm mm mm Threads mm N N

20 STB20SS 11/8 21/2 115/16 2 25/8 1/2 3/8-16 23/32 2430 1470

28.6 63.5 33.3 50.8 66.7 12.7 18.3 10800 655025 STB25SS 11/4 23/4 17/16 2 3 1/2 3/8-16 25/32 2670 1750 31.8 69.9 36.5 50.8 76.2 12.7 19.8 11900 780030 STB30SS 11/2 31/4 111/16 3 37/8 5/8 7/16-14 7/8 3660 2520 38.1 82.6 42.9 76.2 98.4 15.9 22.2 16300 1120035 STB35SS 11/2 35/8 17/8 31/4 41/8 3/4 1/2-13 1 4850 3440 38.1 92.1 47.6 82.6 104.8 19.1 25.4 21600 1530040 STB40SS 15/8 315/

16 115/16 31/2 41/2 3/4 1/2-13 13/16 5550 4270

41.3 100.0 49.2 88.9 114.3 19.1 30.0 24700 19000

32

Mounted unitZMaRC-coated insert bearingsAvailable with standard set-screw mounting or



Insert Bore Outside Inner Outer Basicradial Max Massbearing dia dia width width loadrating fillet double lock-designation d D B B1 C dynamic C static CO d1 d2 S S1 rad.(1) set-screw collar

in in in in in lbf lbf in in in in lb lb lb mm mm mm mm mm N N mm mm mm mm kg kg kg

3⁄4 1.8504 1.220 0.5512 2 860 1 470 1.110 0.500 0.024 0.31 19.05 47 31 14 12 700 6 500 28.20 12.70 0.60 0.14 RRZ1015BRR 15⁄16 2.0472 1.343 0.5906 3 150 1 750 1.328 0.563 0.024 0.42 23.81 52 34.10 15 14 000 7 800 33.74 14.30 0.60 0.19 RRZ1100BRR-L* 1 2.0472 1.343 1.7500 0.5906 3 150 1 750 1.328 1.4725 0.563 1.059 0.024 0.37 0.53 25.4 52 34.10 44.4 15 14 000 7 800 33.74 37.4 14.30 26.9 0.60 0.17 0.24RRZ1102BRR 11⁄8 2.4409 1.500 0.7087 4 380 2 520 1.563 0.626 0.024 0.66 28.58 62 38.10 18 19 500 11 200 39.70 15.90 0.60 0.30 RRZ1103BRR-L* 13⁄16 2.4409 1.500 1.7638 0.7087 4 380 2 520 1.563 1.7402 0.626 1.185 0.024 0.60 0.79 30.16 62 38.10 44.8 18 19 500 11 200 39.70 44.2 15.90 30.1 0.60 0.27 0.36RRZ104BRR2 11⁄4 2.4409 1.500 0.7087 4 380 2 520 1.563 0.626 0.024 0.55 31.75 62 38.10 18 19 500 11 200 39.70 15.90 0.60 0.25 RRZ1104BRR-L* 11⁄4 2.8346 1.688 2.0000 0.7480 5 730 3 440 1.815 2.0000 0.689 1.272 0.039 1.00 1.31 31.75 72 42.88 51.1 19 25 500 15 300 46.10 51.1 17.50 32.3 1.00 0.46 0.59RRZ1107BRR-L* 17⁄16 2.8346 1.688 2.0000 0.7480 5 730 3 440 1.815 2.0000 0.689 1.374 0.039 0.84 1.21 36.51 72 42.88 51.1 19 25 500 15 300 46.10 51.1 17.50 34.9 1.00 0.38 0.55RRZ1108BRR 11⁄2 3.1496 1.938 0.8268 6 900 4 270 2.039 0.748 0.039 1.30 38.10 80 49.23 21 30 700 19 000 51.80 19 1.00 0.59 RRZ1115BRR-L* 115⁄16 3.5433 2.031 2.4688 0.8661 7 890 5 220 2.461 2.6575 0.748 1.500 0.039 1.55 2.09 49.20 90 51.60 62.7 22 35 100 23 200 62.51 67.5 19 38.1 1.00 0.71 0.95

(1) Fillet radius indicates the maximum fillet radius on the shaft which bearing corner will clear.


Insert Bore Outside Inner Outer Basicradial Max Massbearing dia dia width width loadrating fillet designation d D B C dynamic C static CO d1 S rad.(1)

in in in in lbf lbf in in in lb mm mm mm mm N N mm mm mm kg

RRZ20BRR 0.7874 1.8504 1.220 0.5512 2 860 1 470 1.110 0.500 0.024 0.31 20 47 31 14 12 700 6 550 28.20 12.70 0.60 0.14RRZ25BRR 0.9843 2.0472 1.343 0.5906 3 150 1 750 1.328 0.563 0.024 0.40 25 52 34.1 15 14 000 7 800 33.74 14.30 0.60 0.18RRZ30BRR 1.1811 2.4409 1.500 0.7087 4 380 2 520 1.563 0.626 0.024 0.60 30 62 38.1 18 19 500 11 200 39.70 15.90 0.60 0.27RRZ35BRR 1.3780 2.8346 1.688 0.7480 5 730 3 440 1.815 0.689 0.039 1.00 35 72 42.9 19 25 500 15 300 46.10 17.50 1.00 0.46RRZ40BRR 1.5748 3.1496 1.938 0.7480 6 900 4 270 2.039 0.748 0.039 1.20 40 80 49.2 19 30 700 19 000 51.80 19.00 1.00 0.55

d d1DB

s

C

B1

s1d2D d d1

C

33

Mounted unitStainless steel insert bearingSet-screw locking

(1) Fillet radius indicates the maximum fillet radius on the shaft which bearing corner will clear.


d d1DB

s

C




RRH1012BRR 3⁄4 1.8504 1.220 0.5512 2 380 1 470 1.110 0.500 0.024 0.31 19.05 47 31 14 10 600 6 500 28.20 12.70 0.60 0.14RRH1100BRR 1 2.0472 1.343 0.5906 2 520 1 750 1.328 0.563 0.024 0.37 25.4 52 34.10 15 11 200 7 800 33.74 14.30 0.60 0.17RRH1103BRR 13⁄16 2.4409 1.500 0.7087 3 510 2 520 1.563 0.626 0.024 0.60 30.16 62 38.10 18 15 600 11 200 39.70 15.90 0.60 0.27RRH104BRR2 11⁄4 2.4409 1.500 0.7087 3 510 2 520 1.563 0.626 0.024 0.55 31.75 62 38.10 18 15 600 11 200 39.70 15.90 0.60 0.25RRH1104BRR 11⁄4 2.8346 1.688 0.7480 4 560 3 440 1.815 0.689 0.039 1.00 31.75 72 42.88 19 20 300 15 300 46.10 17.50 1.00 0.46RRH1106BRR 13⁄8 2.8346 1.688 0.7480 4 560 3 440 1.815 0.689 0.039 0.90 34.93 72 42.88 19 20 300 15 300 46.10 17.50 1.00 0.41RRH1107BRR 17⁄16 2.8346 1.688 0.7480 4 560 3 440 1.815 0.689 0.039 0.84 36.51 72 42.88 19 20 300 15 300 46.10 17.50 1.00 0.38RRH1108BRR 11⁄2 3.1496 1.938 0.8268 5 550 4 270 2.039 0.748 0.039 1.30 38.10 80 49.23 21 24 700 19 000 51.80 19.00 1.00 0.59




RRH20BRR 0.7874 1.8504 1.220 0.5512 2 430 1 470 1.110 0.500 0.024 0.31 20 47 31 14 10 800 6 550 28.20 12.70 0.60 0.14RRH25BRR 0.9843 2.0472 1.343 0.5906 2 670 1 750 1.328 0.563 0.024 0.40 25 52 34.1 15 11 900 7 800 33.74 14.30 0.60 0.18RRH30BRR 1.1811 2.4409 1.500 0.7087 3 660 2 520 1.563 0.626 0.024 0.60 30 62 38.1 18 16 300 11 200 39.70 15.90 0.60 0.27RRH35BRR 1.3780 2.8346 1.688 0.7480 4 850 3 440 1.815 0.689 0.039 1.00 35 72 42.9 19 21 600 15 300 46.10 17.50 1.00 0.46RRH40BRR 1.5748 3.1496 1.938 0.7480 5 550 4 270 2.039 0.748 0.039 1.20 40 80 49.2 19 24 700 19 000 51.80 19 1.00 0.55

34

Marathon submersible plane bearing units (SuppliedthroughtheMTOProgram)

Set-screwlocking

MRC submersible plane bearing units are suitable for applications, which are constantly exposed to or submerged in moisture. When normal anti-friction bear-ings fail because of grease washout or corrosion, MRC submersible plane bearings are the best choice to keep rotating equip-ment running smoothly. The 316 stainless steel inner sleeve offers wear resistance as well as corrosion resistance. The high performance polymer outer ring allows

the bearing to operate at moderate speeds without the need for lubrication since the polymer material is self-lubricated. Since the polymer material is the friction-reduc-ing component, no grease is required for proper performance. And since frequent regreasing is the typical solution when try-ing to extend the service life of a bearing in severe operating environments, excessive grease purging is no longer a problem. The insert bearing will not catastrophically fail;

it wears and becomes loose in the bore, indicating it needs to be replaced. The polymer material can withstand continuous temperatures up to 150° F and tolerates higher temperatures during washdown. The recommended Marathon housing material for this insert is either the composite or cast stainless steel. In addition, the insert bearing is approved for direct food contact by the USDA / FDA in meat, poultry, and dairy applications.

Forinchshafts3⁄4–115⁄16(metricinsertscanbesuppliedthroughtheMTOprogram)

Insert Shaft Max Max Radial Massbearing dia speed* load* load (fr) designation d D B C S x speed (n)*

in in in in in lb mm mm mm mm mm rpm lbs lbs x rpm kg

RRP1012BPL 3⁄4 1.8504 1.4843 0.9219 0.5630 250 625 3 900 0.3 19.1 47.0 37.7 23.4 14.3 0.14RRP1100BPL 1 2.0472 1.5472 0.9219 0.6260 190 875 4 200 0.4 25.4 52.0 39.3 23.4 15.9 0.18RRP1102BPL 11⁄8 2.4409 1.8307 1.0787 0.750 150 1 150 4 900 0.6 28.6 62.0 46.5 27.4 19.1 0.27RRP1103BPL 13⁄16 2.4409 1.8307 1.0787 0.750 150 1 150 4 900 0.6 30.2 62.0 46.5 27.4 19.1 0.27RRP104BPL2 11⁄4 2.4409 1.8307 1.0787 0.750 150 1 150 4 900 0.6 31.8 62.0 46.5 27.4 19.1 0.27RRP1104BPL 11⁄4 2.8346 2.0472 1.1102 0.9375 130 1 450 5 600 0.8 31.8 72.0 52.0 28.2 23.8 0.36RRP1107BPL 17⁄16 2.8346 2.0472 1.1102 0.9375 130 1 450 5 600 0.8 36.5 72.0 52.0 28.2 23.8 0.36RRP1108BPL 11⁄2 3.1496 2.2323 1.2638 0.9685 120 1 900 6 100 1.0 38.1 80.0 56.7 32.1 24.6 0.45RRP1115BPL 115⁄16 3.5433 2.2953 1.2638 1.0315 100 2 500 6 300 1.3 49.2 90.0 58.3 32.1 26.2 0.59

Plane bearing capacity is based on the heat generation, which is directly related to speed versus applied load. The “radial load x speed” column above provides the relation-ship between load versus speed in order to evaluate the bearing suitability. If the application conditions exceed any of the three factors above, different polymer materials can be selected to meet the application needs.

35

Marathon hi-temp plane bearing units (SuppliedthroughtheMTOProgram)

Set-screwlocking

MRC hi-temp units are fitted with high temperature plane bearing inserts that can withstand consistent temperatures up to 500° F. When normal anti-friction bearings cannot handle the heat, Marathon hi-temp units are a great solution to keep rotat-ing equipment running smoothly. The 316 stainless steel inner ring and 304 stainless steel outer ring offer wear resistance as well as corrosion resistance. The high per-formance polymer sleeve material allows

the bearing to operate at higher speeds compared to typical plane bearings. Since the polymer material is the fric-tion-reducing component, no grease is required for proper performance. Therefore, they are maintenance free and there is no issue about excessive grease purging which is usually a problem when trying to extend the service life of a bearing in severe operating environments. In the event of premature wear, the insert bearing

Forinchshafts3⁄4–115⁄16(metricinsertscanbesuppliedthroughtheMTOprogram)

Insert Shaft Max Max Radial Massbearing dia speed* load* load (fr) designation d D B C S x speed (n)*

in in in in in lb mm mm mm mm mm rpm lbs lbs x rpm kg

RRS1012BBL 3⁄4 1.8504 1.4843 0.9219 0.5630 2 000 2 100 179 000 0.5 19.1 47.0 37.7 23.4 14.3 0.23RRS1100BBL 1 2.0472 1.5472 0.9219 0.6260 1 500 3 000 190 000 0.7 25.4 52.0 39.3 23.4 15.9 0.32RRS1102BBL 11⁄8 2.4409 1.8307 1.0787 0.750 1 350 4 000 226 000 1.1 28.6 62.0 46.5 27.4 19.1 0.50RRS1103BBL 13⁄16 2.4409 1.8307 1.0787 0.750 1 350 4 000 226 000 1.1 30.2 62.0 46.5 27.4 19.1 0.50RRS104BBL2 11⁄4 2.4409 1.8307 1.0787 0.750 1 350 4 000 226 000 1.1 31.8 62.0 46.5 27.4 19.1 0.50RRS1104BBL 11⁄4 2.8346 2.0472 1.1102 0.9375 1 200 5 100 262 000 1.7 31.8 72.0 52.0 28.2 23.8 0.77RRS1107BBL 17⁄16 2.8346 2.0472 1.1102 0.9375 1 200 5 100 262 000 1.7 36.5 72.0 52.0 28.2 23.8 0.77RRS1108BBL 11⁄2 3.1496 2.2323 1.2638 0.9685 1 000 6 700 286 000 2.5 38.1 80.0 56.7 32.1 24.6 1.14RRS1115BBL 115⁄16 3.5433 2.2953 1.2638 1.0315 800 9 000 298 000 3.3 49.2 90.0 58.3 32.1 26.2 1.50

Plane bearing capacity is based on the heat generation, which is directly related to speed versus applied load. The “radial load x speed” column above provides the relation-ship between load versus speed in order to evaluate the bearing suitability. If the application conditions exceed any of the three factors above, different polymer materials can be selected to meet the application needs.


will not catastrophically fail but will exhibit looseness indicating that the bearing needs to be replaced. The plane bearing inserts can be assembled into either the Marathon ZMaRC-coated cast iron or cast stainless steel housings to meet most application requirements for high temperature duty. In addition, the units meet USDA approval for direct contact in meat, poultry, and dairy applications.

36

SKF hi-temp ball bearing units (SuppliedthroughtheMTOProgram)

Set-screwlockingSKF hi-temp ball bearing units are fitted with antifriction bearings that can with-stand consistent temperatures up to 650° F. When normal anti-friction bearings seize, SKF hi-temp units are a great solution to keep rotating equipment running smoothly. Their increased radial internal clearance allows the bearing to expand without seiz-ing at extreme temperatures. Manganese phosphated rings and black oxide flingers provide protection against corrosion. Their special graphite cage provides small quan-tities of graphite powder during rotation to adequately lubricate the rolling surfaces, making the unit maintenance free. And, since no lubrication is required, there is significant lubricant savings, there are no messy piles of grease that collect below the unit from continuous greasing, and there are not toxic fumes produced by the grease at the maximum operating temperature range.

Because of the special graphite cage and increased radial internal clearance, SKF hi-temp ball bearing units are designed to be operated up to approximately 100 rpm. In addition, the static load rating below is based on an operating temperature of 300° F. The rating gets reduced as the oper-ating temperatures increase up to 650° F.The SKF hi-temp ball bearing units utilize the very effective MRC ZMaRC coating for the cast iron housings to provide corrosion protection. The units are available in four housing styles; pillow block, 2-bolt flange, 4-bolt flange, and tapped base. The insert bearings are shown below. The com-plete unit part number includes the basic housing style prefix, followed by the shaft diameter in inches, and finally the suffix “TF/VA228”. Ex.: 1-1/2” pillow block for extreme operating temperatures would be SY 1.1/2 TF/VA228.

Dimensions Basic Radial Mass Designation static internal load clearance d D B C d1 s1 r1,2 rating min C0 min max

mm N kg –in lbf lbs

47 31 14 28.2 18.3 0.6 6,550 56 96 0.14 YAR 204-012-2FW/VA2013/4 1.8504 1.2205 0.5512 1.1102 0.7205 0.0236 1,473 0.0022 0.0038 0.3086 YAR 204-012-2FW/VA228

52 34.1 15 33.7 19.8 0.6 7,800 60 105 0.17 YAR 205-100-2FW/VA2011 2.0472 1.3425 0.5906 1.3268 0.7795 0.0236 1,754 0.0024 0.0041 0.3748 YAR 205-100-2FW/VA228

62 38.1 18 39.7 22.2 0.6 11,200 60 105 0.28 YAR 206-103-2FW/VA20113/16 2.4409 1.5 0.7087 1.563 0.874 0.0236 2,518 0.0024 0.0041 0.6173 YAR 206-103-2FW/VA228

72 42.9 19 46.1 25.4 1 15,300 80 130 0.41 YAR 207-104-2FW/VA20111/4 2.8346 1.689 0.748 1.815 1 0.0394 3,440 0.0031 0.0051 0.9039 YAR 207-104-2FW/VA228

80 49.2 21 51.8 30.2 1 19,000 80 130 0.55 YAR 208-108-2FW/VA20111/2 3.1496 1.937 0.8268 2.0394 1.189 0.0394 4,271 0.0031 0.0051 1.2125 YAR 208-108-2FW/VA228

85 49.2 22 56.8 30.2 1 21,600 90 290 0.6 YAR 209-112-2FW/VA20113/4 3.3465 1.937 0.8661 2.2362 1.189 0.0394 4,856 0.0035 0.0114 1.3228 YAR 209-112-2FW/VA228

90 51.6 22 62.5 32.6 1 23,200 90 145 0.69 YAR 210-115-2FW/VA201115/16 3.5433 2.0315 0.8661 2.4606 1.2835 0.0394 5,216 0.0035 0.0057 1.5212 YAR 210-115-2FW/VA228

100 55.6 25 69.1 33.4 1 29,000 110 180 0.94 YAR 211-200-2FW/VA2012 3.937 2.189 0.9843 2.7205 1.315 0.0394 6,519 0.0043 0.0071 2.0723 YAR 211-200-2FW/VA228

110 65.1 26 75.6 39.7 1.5 36,000 110 180 1.3 YAR 212-207-2FW/VA20127/16 4.3307 2.563 1.0236 2.9764 1.563 0.0591 8,093 0.0043 0.0071 2.866 YAR 212-207-2FW/VA228

D

C

d d1

r1r2

B

s1

37

Made-To-Order products for the food processing industryLowbackingheightpillowblock(CPL–ZMorSS)

Size range: 3⁄4 – 11⁄2 inches, 20 mm – 40 mm Insert bearing: ZMaRC coated or stainless steel

These units have a lower backing height than standard pillow blocks while the base bolt center distance, bolt size, insert bearing and load ratings remain the same. The overall height and base thickness are slightly smaller. These units are non-re-greasable but can be furnished with grease fittings on special order. A regreasable unit is denoted by adding a “G” suffix to the unit part number. Mounting and center height interchange-able with the following: AMI UCLP

Dodge P2B-SC Fafnir YAK Hub City PB250 Link Belt PL3 McGill CL-25 Sealmaster NPL

Lowprofile2-boltflangeunit(C2L–ZMorSS)


These units are smaller than a standard 2-bolt flange unit but have the same insert bearing and load ratings. They are used where space is limited. The housing bolt holes are round to accept round machine bolts. They are non-regreasable but can be furnished with grease fittings on special or-der. A regreasable unit is denoted by adding a “G” suffix to the unit part number. Mounting interchangeable with the following: Dodge LFT-SC

Hub City FB160 McGill FBS2-25

Hangerunits(SHU–SS)

Size range: 3⁄4 – 11⁄2 inches, 20 mm – 40 mm Insert bearing: stainless steel

These units are used on screw conveyors and include a stainless steel housing tapped for a straight pipe thread. These units are non-regreasable but grease fittings can be furnished on special order. A regreasable unit is denoted by adding a “G” suffix to the unit part number. Mounting interchangeable with the following: AMI UCECH, UCHPL

Dodge SCHB McGill MCHB Sealmaster SCHB

3-boltflangeunit(C3F–ZMorSS)


These units are non-regreasable and are applied where space constraints require a compact unit with sufficient strength for the application. The insert bearing and load ratings are the same as a standard unit with the same shaft diameter. The housing bolt holes are round to accept round machine bolts. A grease fitting can be furnished on special order. A regreasable unit is denoted by adding a “G” suffix to the unit part number. Mounting interchangeable with the following: AMI BTM

Dodge LF-SC Hub City FBI150 Sealmaster LF

4-boltpilotedflangeunit(CPF–ZMorSS)


These are non-regreasable units which have an accurately machined piloting diameter to position the unit in the bore of the mounting surface, eliminating the need for any additional adjustments. The insert bearings and load ratings are the same as standard units with the same shaft diameter. A grease fitting can be furnished on special order. A regreasable unit is denoted by adding a “G” suffix to the unit part number. Mounting interchangeable with the following: AMI UCFCS

Dodge FC-SC Hub City FC350 McGill PFC4-25 Sealmaster SFC

Other shaft sizes may be available on special order.

ContactMRCat1-800-MRC-7000regardingpricing,availabilityortechnicalserviceforallMarathonseriesproducts,orforinformationonregreasableunits.


38

Marathonseriesnomenclature

Insert bearing

L - Lock collar bearing unit ZM - ZMaRC coatedSS - Stainless steelG - Relubricatable bearing unitZMR - ZMaRC-coated insert bearing,

with a 11/4" bore, fitted into a housing that usually accom-modates a 13/16" insert bearing

SSR - Stainless steel insert bearing, with a 11/4" bore, fitted into a housing that usually accommodates a 13/16" insert bearing

HT - High temperature plane bearingSB - Submersible plane bearingHTR - High temperature insert bearing

with a 11⁄4" bore, fitted into a housing that usually accommodates a 13⁄16" insert bearing

SBR - Submersible insert bearing with a 11⁄4" bore, fitted into a housing that usually accommodates a 13⁄16" insert bearing

Housing

CPB - Gray composite pillow blockZPB - ZMaRC-coated cast iron

pillow blockSPB - Cast stainless steel pillow blockC2F - Gray composite 2-bolt flangeZ2F - ZMaRC-coated cast iron

2-bolt flangeS2F - Cast stainless steel 2-bolt flangeC4F - Gray composite 4-bolt flangeZ4F - ZMaRC-coated cast iron

4-bolt flangeS4F - Cast stainless steel 4-bolt flangeCTB - Gray composite tapped-base

pillow blockZTB - ZMaRC-coated cast iron

tapped-base pillow blockSTB - Cast stainless steel

tapped-base pillow blockCBF - Gray composite 3-bolt

bracket flangeCTN - Gray composite narrow-slot

take-upCTW - Gray composite wide-slot

take-up

Shaft size

Inches:

First digit: number of inches

Second and third digits: number of sixteenths of an inch

Example:103 indicates 13/16 (unit)

Metric:

First two digits: number of millimeters

Example:25 indicates 25 millimeters

CPB 103 ZM

MarathonseriestolerancesanddimensionaldataInsert bearing bore tolerance and radial clearance

Bearingborediameter

inch mm3/4 1 11/8 11/16 11/4 13/8 17/16 11/2 115/16 20 25 30 35 40

Bore tolerance -.0000

in +.0007 +.0007 +.0008 +.0008 +.0008 +.0008 +.0008 +.0008 +.0008 +.0007 +.0007 +.0008 +.0008 +.0008

mm +.018 +.018 +.020 +.020 +.020 +.020 +.020 +.020 +.020 +.018 +.018 +.020 +.020 +.020

Radial clearance

in .0005–.0011 0006–.0013.007– .0014

.018– .036

.0005–.0011 .0006–.0013

mm .013–.028 .015–.033 .013–.028 .015–.033

For stainless steel insert bearings (RRH series), the above tolerances are especially critical because of the bearing material properties. Undersized shafting, excessive set-screw tightening, and severe environ-mental conditions can result in excessive

Shaft diameter tolerances

Shaft diameter Tolerance in. in.

up to 115/16 +0.0000 / -0.0005 2–4 +0.0000 / -0.0010

ring distortion which can effect the perfor-mance of the bearing. Therefore, it is highly recommended that the proper set-screw torque and shaft diameter tolerance be used (see assembly instructions on pages 40 and 41).

39

Basicradialloadrating Speedrating Openand SingleMRC Bore Outside Width Fillet shielded &doublebearing diameter radius1) Dynamic Static sealednumber d D B ra Zd2 C2) CO grease oil grease mm in mm in mm in mm in mm in N lbf N lbf RPM RPM RPM

38ZZST 8.0 .3150 22.0 .8661 7.0 .2756 .30 .012 110 .17 2 600 585 1 360 306 36 000 43 000 23 000R2ST 3.2 .1250 9.5 .3750 4.0 .1562 .30 .012 19 .03 250 56 120 27 75 000 91 000 52 000R2FFST 3.2 .1250 9.5 .3750 4.0 .1562 .30 .012 19 .03 250 56 120 27 75 000 91 000 52 000R3FFST 4.8 .1875 12.7 .5000 5.0 .1960 .30 .012 39 .06 765 172 490 110 57 000 69 000 40 000 R3ZZST 4.8 .1875 12.7 .5000 5.0 .1960 .30 .012 39 .06 765 172 490 110 57 000 69 000 40 000R4FFST 6.4 .2500 15.9 .6250 5.0 .1960 .30 .012 45 .07 1 180 266 620 139 44 000 54 000 31 000R6FFST 9.5 .3750 22.2 .8750 7.1 .2812 .41 .016 110 .17 2 660 597 1 340 301 31 000 38 000 21 000 R6ZZST 9.5 .3750 22.2 .8750 7.1 .2812 .41 .016 110 .17 2 660 597 1 340 301 31 000 38 000 21 000R8ST 12.7 .5000 28.6 1.1250 6.4 .2500 .41 .016 181 .28 4 060 912 2 400 540 24 000 29 000 16 000R8FFST 12.7 .5000 28.6 1.1250 7.9 .3125 .41 .016 181 .28 4 060 912 2 400 540 24 000 29 000 16 000 R8ZZST 12.7 .5000 28.6 1.1250 7.9 .3125 .41 .016 181 .28 4 060 912 2 400 540 24 000 29 000 16 000R10ZZST 15.9 .6250 34.9 1.3750 8.7 .3438 .79 .031 226 .35 4 840 1 090 3 250 731 18 000 22 000 13 000R12FFST 19.1 .7500 41.3 1.6250 11.1 .4375 .79 .031 361 .56 7 490 1 680 5 100 1 150 16 000 19 000 11 000 R12ZZST 19.1 .7500 41.3 1.6250 11.1 .4375 .79 .031 361 .56 7 490 1 680 5 100 1 150 16 000 19 000 11 000101KSZZST 12.0 .4724 28.0 1.1024 8.0 .3125 .30 .012 181 .28 4 060 912 2 360 530 26 000 32 000 17 000102KSZZST 15.0 .5906 32.0 1.2598 9.0 .3543 .30 .012 206 .32 4 470 1 010 2 850 640 22 000 28 000 14 000 103KSZZST 17.0 .6693 35.0 1.3780 10.0 .3937 .30 .012 226 .35 4 840 1 090 3 250 730 19 000 24 000 13 000104KSZZST 20.0 .7874 42.0 1.6535 12.0 .4724 .64 .025 361 .56 7 490 1 680 5 000 1 120 17 000 20 000 11 000105KSZZST 25.0 .9843 47.0 1.8504 12.0 .4724 .64 .025 458 .71 8 960 2 010 6 550 1 470 15 000 18 000 9 500 106KSZZST 30.0 1.1811 55.0 2.1654 13.0 .5118 1.00 .040 561 .87 9 470 2 130 7 390 1 660 12 000 15 000 8 000200SZZST 10.0 .3937 30.0 1.1811 9.0 .3543 .64 .025 181 .28 4 060 912 2 360 531 24 000 30 000 17 000201SST 12.0 .4724 32.0 1.2598 10.0 .3937 .64 .025 252 .39 5 510 1 240 3 100 697 22 000 28 000 15 000 201SZZST 12.0 .4724 32.0 1.2598 10.0 .3937 .64 .025 252 .39 5 510 1 240 3 100 697 22 000 28 000 15 000202SST 15.0 .5906 35.0 1.3780 11.0 .4331 .64 .025 290 .45 6 240 1 400 3 250 843 19 000 24 000 13 000202SFFST 15.0 .5906 35.0 1.3780 11.0 .4331 .64 .025 290 .45 6 240 1 400 3 250 843 19 000 24 000 13 000 202SZZST 15.0 .5906 35.0 1.3780 11.0 .4331 .64 .025 290 .45 6 240 1 400 3 250 843 19 000 24 000 13 000203SFFST 17.0 .6693 40.0 1.5748 12.0 .4724 .64 .025 361 .56 7 650 1 720 4 750 1 070 17 000 20 000 12 000203SZZST 17.0 .6693 40.0 1.5748 12.0 .4724 .64 .025 361 .56 7 650 1 720 4 750 1 070 17 000 20 000 12 000 204SST 20.0 .7874 47.0 1.8504 14.0 .5512 1.00 .040 503 .78 10 200 2 280 6 550 1 470 15 000 18 000 10 000204SZZST 20.0 .7874 47.0 1.8504 14.0 .5512 1.00 .040 503 .78 10 200 2 280 6 550 1 470 15 000 18 000 10 000205SFFST 25.0 .9843 52.0 2.0472 15.0 .5906 1.00 .040 568 .88 11 200 2 520 7 800 1 750 12 000 15 000 8 500 205SZZST 25.0 .9843 52.0 2.0472 15.0 .5906 1.00 .040 568 .88 11 200 2 520 7 800 1 750 12 000 15 000 8 500206SST 30.0 1.1811 62.0 2.4409 16.0 .6299 1.00 .040 819 1.27 15 600 3 510 11 200 2 520 10 000 13 000 7 500206SFFST 30.0 1.1811 62.0 2.4409 16.0 .6299 1.00 .040 819 1.27 15 600 3 510 11 200 2 520 10 000 13 000 7 500 206SZZST 30.0 1.1811 62.0 2.4409 16.0 .6299 1.00 .040 819 1.27 15 600 3 510 11 200 2 520 10 000 13 000 7 500207SZZST 35.0 1.3780 72.0 2.8346 17.0 .6693 1.00 .040 1 111 1.72 20 500 4 610 15 300 3 440 9 000 11 000 6 300304SZZST 20.0 .7874 52.0 2.0472 15.0 .5906 1.00 .040 632 .98 12 700 2 860 7 800 1 750 13 000 16 000 9 500 305SZZST 25.0 .9843 62.0 2.4409 17.0 .6693 1.00 .040 864 1.34 17 000 3 810 10 800 2 430 11 000 14 000 7 500

Marathon series product rangeStainless steel single row deep groove (SRDG) ball bearings

MRC stainless steel (SRDG) ball bear-ings are used in fish, poultry and other food processing applications. Examples of popular applications include automatic fil-leting and sizing equipment aboard fishing trawlers, and evisceration equipment in poultry plants. MRC stainless steel SRDG ball bearings exhibit significantly longer life than standard

bearings in a wide range of demanding ap-plications. All MRC stainless steel SRDG ball bearings can also be specified with a solid lubricant pack that prevents grease washout during washdowns and helps protect against con-tamination in harsh environments.

Forequivalentloadandlifecalculationsseepage52and53intheMRCEngineeringHandbook.

1) Fillet radius indicates maximum fillet radius on shaft or in housing which bearing corner will clear.2) Rating for one million revolutions or 500 hours at 33 1⁄3 RPM.3) Listed values are for a pressed stainless steel cage; ABEC.1. The speed ratings have been determined through historical application and practice.

FFST, KSFFST, SFFST

twoshields

ZZST, KSZZST, SZZST

twoseals


40

Step 1Remove any burrs on the shaft with emery cloth or a fine file. Wipe the shaft with a clean piece of cloth. Check the shaft diameter to ensure it meets the tolerances shown below.

Step 2Back out all the set-screws of the double set-screw unit to clear the shaft and slide the unit into position on the shaft with the side opposite the shaft locking device leading.

Step 3Make sure the housing base and mating surfaces are clean and free of any debris or burrs. Ensure that the supporting surface is flat. If the housing requires shims for adjustment, the shims MUST extend the full length and width of the base. Bolt the housing securely to the support. (see Table A for maximum recommended tighten-ing torques for composite housings.) Note: For composite pillow block and flanged housings, a thick flat stainless steel washer should always be installed between the bolt head and mounting base to properly distribute the clamping force.

Step 4ZMaRCdoubleset-screwinsertsBefore the set-screws are tightened, reinspect the position to make sure the housing did not shift when the base bolts were tightened. Tighten each set-screw alternately with the proper hex head socket wrench until they stop turning and the hex head socket wrench starts to spring. Refer-ence Table B for maximum recommended set-screw tightening torque values and wrench dimensions. These values should not be exceeded.

ZMaRClockcollarInsertsPush the eccentric locking collar in position on the inner ring extension and tighten with a quick jerk in the main direction of rotation of the shaft and then tighten fully using a spanner wrench or hammer and drift. Tighten the set-screw with the proper hex head socket wrench until they stop turning and the hex head socket wrench starts to spring. Reference Table C for max-imum recommended set-screw tightening torque values and wrench dimensions. These values should not be exceeded.

StainlesssteelinsertsBefore the set-screws are tightened, rein-spect the position to make sure the housing did not shift when the base bolts were tightened. Remove the set-screws and apply a bonding agent to the set-screw’s threads such as LocTite® and insert the set-screws back into the inner ring. Tighten each set-screw alternately with the proper hex head socket wrench until they stop turning and the hex head socket wrench starts to spring. Reference Table D for max-imum recommended set-screw tightening torque values and wrench dimensions. These values should not be exceeded.

Assembly instructions for MRCMarathon bearing units

Shaft diameter tolerances

Shaft diameter Tolerance in in

up to 115/16 +0.0000 / -0.0005 2-4 +0.0000 / -0.0010

Step 1

Step 2

Step 3

Step 4

41

Table A

Compositehousingsmaximumbolttighteningtorques

Pillowblock 2-and4-boltflange Tappedbase Shaft size Boltdiameter Max. Boltdiameter Max. Boltsize Max. tightening tightening UNCthread tightening torque torque torque in. mm in.-lbs. in. mm in.-lbs. in. in.-lbs

3/4" 3/8 10.0 390 3/8 10.0 430 3/8-16 130 1" 3/8 10.0 430 3/8 10.0 430 3/8-16 130 11/8" 1/2 12.7 430 3/8 10.0 430 7/16-14 150 13/16" 1/2 12.7 430 3/8 10.0 430 7/16-14 150 11/4R" 1/2 12.7 430 3/8 10.0 430 7/16-14 150 11/4" 1/2 12.7 475 1/2 12.7 430 1/2-13 170 17/16" 1/2 12.7 475 1/2 12.7 430 1/2-13 170 11/2" 1/2 12.7 520 1/2 12.7 520 1/2-13 170 115/16" 5/8 15.9 560 5/8 15.9 520 5/8-11 200 20 mm 3/8 10.0 390 3/8 10.0 430 3/8-16 130 25 mm 3/8 10.0 430 3/8 10.0 430 3/8-16 130 30 mm 1/2 12.7 430 3/8 10.0 430 7/16-14 150 35 mm 1/2 12.7 475 1/2 12.7 430 1/2-13 170 40 mm 1/2 12.7 520 1/2 12.7 520 1/2-13 170

Table B

ZMaRCdoubleset-screwinsertbearingset-screwspecifications (RRZ-BRR)

Shaft Set-screw Hexwrench Maxtightening size size size torque in.-lbs.

3/4" 1/4"-28 x 1/4" 1/8" 87 1" 1/4"-28 x 1/4" 1/8" 87 11/8" 1/4"-28 x 1/4" 1/8" 87 13/16" 1/4"-28 x 1/4" 1/8" 87 11/4R" 1/4"-28 x 1/4" 1/8" 87 11/4" 5/16"-24 x 5/16" 5/32" 165 17/16" 5/16"-24 x 5/16" 5/32" 165 11/2" 5/16"-24 x 5/16" 5/32" 165 115/16" 3/8"-24 x 3/8" 3/16" 290 20 mm M6 x 0.75mm x 5mm 3 mm 87 25 mm M6 x 0.75mm x 5mm 3 mm 87 30 mm M6 x 0.75mm x 5mm 3 mm 87 35 mm M6 x 0.75mm x 7mm 3 mm 165 40 mm M8 x 1mm x 7mm 4 mm 165

Table D

Stainlesssteelinsertbearingset-screwspecifications(RRH-BRR)


3/4" 1/4"-28 x 3/16" 1/8" 35 1" 1/4"-28 x 3/16" 1/8" 35 13/16" 1/4"-28 x 3/16" 1/8" 35 11/4R" 1/4"-28 x 3/16" 1/8" 35 11/4" 5/16"-24 x 1/4" 5/32" 80 13/8" 5/16"-24 x 1/4" 5/32" 80 17/16" 5/16"-24 x 1/4" 5/32" 80 11/2" 5/16"-24 x 1/4" 5/32" 80 20 mm M6 x 0.75mm x 5mm 3 mm 35 25 mm M6 x 0.75mm x 5mm 3 mm 35 30 mm M6 x 0.75mm x 5mm 3 mm 35 35 mm M6 x 0.75mm x 7mm 3 mm 35 40 mm M8 x 1mm x 7mm 4 mm 80

Table C

ZMaRClockcollarinsertbearingset-screwspecifications (RRZ-BRR-L)


1" 1/4"-28 x 3/16" 1/8" 35 13/16" 5/16"-24 x 1/4" 5/32" 80 11/4" 3/8"-24 x 3/8" 3/16" 290 17/16" 3/8"-24 x 3/8" 3/16" 290 115/16" 3/8"-24 x 3/8" 3/16" 290

MountingtheinsertbearingintothehousingPosition the bearing 90° from its normal position and insert it into the slots in the housing, making sure that the set-screws do not interfere with the edge of the housing bore. Then swivel the bearing into position using a piece of tubing through the bore. If the housing has a relubrication fitting, the set-screw side of the bearing should be matched to the side of the housing with the insert slots. In order to ensure that the relubrication fitting and lubrication holes line up, the initial misalignment should not exceed 5 degrees.


42

Marathon mounted unit basic comparison - inch shafts

Pillowblocks

Shaft diameter 3⁄4 15⁄16 1 11⁄8 13⁄16

Housing Insert bearing

MRC Composite ZMaRC CPB012ZM CPB015ZM CPB100ZM CPB102ZM CPB103ZM Composite Stainless steel CPB012SS CPB100SS CPB103SS ZMaRC-coated cast iron ZMaRC ZPB012ZM ZPB015ZM ZPB100ZM ZPB102ZM Cast stainless steel Stainless steel SPB012SS SPB100SS SPB103SS

AMI Polymer Black oxide UCPPL204-12MZ UCPPL205-15MZ UCPPL205-16MZ UCPPL206-18MZ UCPPL206-19MZ Polymer Stainless steel MUCPPL204-12 MUCPPL205-15 MUCPPL205-16 MUCPPL206-18 MUCPPL206-19

Dodge Polymer TDC P2B-SCEZ-012-PCR P2B-SCEZ-015-PCR P2B-SCEZ-100-PCR P2B-SCEZ-102-PCR P2B-SCEZ-103-PCR Teflon coated TDC P2B-SCTC-012-CR P2B-SCTC-015-CR P2B-SCTC-100-CR P2B-SCTC-102-CR P2B-SCTC-103-CR

Fafnir Polymer TDC YAS 3⁄4 PT YAS 15⁄16 PT YAS 1 PT YAS 1 1⁄8 PT YAS 13⁄16 PT Nickel plated TDC YAS 3⁄4 NT YAS 15⁄16 NT YAS 1 NT YAS 1 1⁄8 NT YAS 13⁄16 NT

Hub City Nickel plated 52100 steel PB25IN-3⁄4 PB25IN-15⁄16 PB25IN-1 PB25IN-11⁄8 PB25IN-13⁄16 Cast iron 52100 steel PB25I-3⁄4 PB25I-15⁄16 PB25I-1 PB25I-11⁄8 PB25I-13⁄16

Link-Belt Nylon coated Black oxide WP3-S212E WP3-S215E WP3-S216E WP3-S218E WP3-S219E Nickel plated Black oxide P3-S212EK75 P3-S215EK75 P3-S216EK75 P3-S218EK75 P3-S219EK75

McGill Nickel plated Black oxide NC-25-3⁄4 NC-25-15⁄16 NC-25-1 NC-25-11⁄8 NC-25-13⁄16 Cast iron 52100 steel C-25-3⁄4 C-25-15⁄16 C-25-1 C-25-11⁄8 C-25-13⁄16

Sealmaster Polymer coated TDC BP-12 BP-15 BP-16 BP-18 BP-19 Polymer coated Black oxide NP-12C-CR NP-15C-CR NP-16C-CR NP-18C-CR NP-19C-CR

SKF Cast iron 52100 steel SY 3⁄4 TR SY 15⁄16 TR SY 1 TR SY 11⁄8 TR SY 13⁄16 TR

Two-boltflangeunits

Shaft diameter 3⁄4 15⁄16 1 11⁄8 13⁄16


MRC Composite ZMaRC C2F012ZM C2F015ZM C2F100ZM C2F102ZM C2F103ZM Composite Stainless steel C2F012SS C2F100SS C2F103SS ZMaRC-coated cast iron ZMaRC Z2F012ZM Z2F015ZM Z2F100ZM Z2F102ZM Cast stainless steel Stainless steel S2F012SS S2F100SS S2F103SS

AMI Polymer Black oxide UCNFL204-12MZ UCNFL205-15MZ UCNFL205-16MZ UCNFL206-18MZ UCNFL206-19MZ Polymer Stainless steel MUCNFL204-12 MUCNFL205-15 MUCNFL205-16 MUCNFL206-18 MUCNFL206-19

Dodge Polymer TDC F2B-SCEZ-012-PCR F2B-SCEZ-015-PCR F2B-SCEZ-100-PCR F2B-SCEZ-102-PCR F2B-SCEZ-103-PCR Teflon coated TDC F2B-SCTC-012-CR F2B-SCTC-015-CR F2B-SCTC-100-CR F2B-SCTC-102-CR F2B-SCTC-103-CR

Fafnir Polymer TDC YCJT 3⁄4 PT YCJT 15⁄16 PT YCJT 1 PT YCJT 11⁄8 PT YCJT 13⁄16 PT Nickel plated TDC YCJT 3⁄4 NT YCJT 15⁄16 NT YCJT 1 NT YCJT 11⁄8 NT YCJT 13⁄16 NT

Hub City Nickel plated 52100 steel FB260N-3⁄4 FB260N-15⁄16 FB260N-1 FB260N-11⁄8 FB260N-13⁄16 Cast iron 52100 steel FB260-3⁄4 FB260-15⁄16 FB260-1 FB260-11⁄8 FB260-13⁄16

Link-Belt Polymer Black oxide KFX-S212 KFX-S215 KFX-S216 KFX-S218 KFX-S219 Nylon coated Black oxide WFX3-S212E WFX3-S215E WFX3-S216E WFX3-S218E WFX3-S219E

McGill Nickel plated Black oxide NFC2-25-3⁄4 NFC2-25-15⁄16 NFC2-25-1 NFC2-25-11⁄8 NFC2-25-13⁄16 Cast iron 52100 steel FC2-25-3⁄4 FC2-25-15⁄16 FC2-25-1 FC2-25-11⁄8 FC2-25-13⁄16

Sealmaster Polymer coated TDC BFT-12 BFT-15 BFT-16 BFT-18 BFT-19 Polymer coated Black oxide SFT-12C-CR SFT-15C-CR SFT-16C-CR SFT-18C-CR SFT-19C-CR

SKF Cast iron 52100 steel FYTB 3⁄4 TR FYTB 15⁄16 TR FYTB 1 TR FYTB 11⁄8 TR FYTB 13⁄16 TR

43


Pillowblocks

11⁄4 11⁄4 13⁄8 17⁄16 11⁄2 115⁄16

MRC CPB104ZMR CPB104ZM CPB107ZM CPB108ZM CPB115ZM CPB104SSR CPB104SS CPB106SS CPB107SS CPB108SS ZPB104ZMR ZPB104ZM ZPB107ZM ZPB108ZM ZPB115ZM SPB104SSR SPB104SS SPB106SS SPB107SS SPB108SS

AMI UCPPL206-20MZ UCPPL207-20MZ UCPPL207-22MZ UCPPL207-23MZ UCPPL208-24MZ MUCPPL206-20 MUCPPL207-20 MUCPPL207-22 MUCPPL207-23 MUCPPL208-24

Dodge P2B-SCUEZ-104S-PCR P2B-SCUEZ-104-PCR P2B-SCEZ-106-PCR P2B-SCEZ-107-PCR P2B-SCBEZ-108-PCR P2B-SCBEZ-115-PCR P2B-SCTC-104S-CR P2B-SCTC-104-CR P2B-SCTC-106-CR P2B-SCTC-107-CR P2B-SCTC-108-CR P2B-SCTC-115-CR

Fafnir YAS 11⁄4 SPT YAS 11⁄4 PT YAS 13⁄8 PT YAS 17⁄16 PT YAS 11⁄2PT YAS 115⁄16 PT YAS 11⁄4 SNT YAS 11⁄4 NT YAS 13⁄8 NT YAS 17⁄16 NT YAS 11⁄2 NT YAS 115⁄16 NT

Hub City PB25IN-11⁄4 S PB25IN-11⁄4 PB25IN-13⁄8 PB25IN-17⁄16 PB25IN-11⁄2 PB25IN-115⁄16 PB25I-11⁄4 S PB25I-11⁄4 PB25I-13⁄8 PB25I-17⁄16 PB25I-11⁄2 PB25I-115⁄16

Link-Belt WP3-S2E20E WP3-S220E WP3-S222E WP3-S223E WP3-S224E WP3-S231E P3-S2E20EK75 P3-S220EK75 P3-S222EK75 P3-S223EK75 P3-S224EK75 P3-S231EK75

McGill NC-25-11⁄4S NC-25-11⁄4 NC-25-13⁄8 NC-25-17⁄16 NC-25-11⁄2 NC-25-115⁄16 C-25-11⁄4 S C-25-11⁄4 C-25-13⁄8 C-25-17⁄16 C-25-11⁄2 C-25-115⁄16

Sealmaster BP-20R BP-20 BP-22 BP-23 BP-24 BP-31 NP-20RC-CR NP-20C-CR NP-22C-CR NP-23C-CR NP-24C-CR NP-31C-CR

SKF SY 11⁄4 STR SY 11⁄4 TR SY 13⁄8 TR SY 17⁄16 TR SY 11⁄2 TR

Two-boltflangeunits

11⁄4 11⁄4 13⁄8 17⁄16 11⁄2 115⁄16

MRC C2F104ZMR C2F104ZM C2F107ZM C2F108ZM C2F115ZM C2F104SSR C2F104SS C2F106SS C2F107SS C2F108SS Z2F104ZMR Z2F104ZM Z2F107ZM Z2F108ZM Z2F115ZM S2F104SSR S2F104SS Z2F106SS S2F107SS S2F108SS

AMI UCNFL206-20MZ UCNFL207-20MZ UCNFL207-22MZ UCNFL207-23MZ UCNFL208-24MZ MUCNFL206-20 MUCNFL207-20 MUCNFL207-22 MUCNFL207-23 MUCNFL208-24

Dodge F2B-SCEZ-104S-PCR F2B-SCEZ-104-PCR F2B-SCEZ-106-PCR F2B-SCEZ-107-PCR F2B-SCEZ-108-PCR F2B-SCEZ-115-PCR F2B-SCTC-104S-CR F2B-SCTC-104-CR F2B-SCTC-106-CR F2B-SCTC-107-CR F2B-SCTC-108-CR F2B-SCTC-108-CR

Fafnir YCJT 11⁄4 SPT YCJT 11⁄4 PT YCJT 13⁄8 PT YCJT 17⁄16 PT YCJT 11⁄2 PT YCJT 115⁄16 PT YCJT 11⁄4 SNT YCJT 1 1⁄4 NT YCJT 13⁄8 NT YCJT 17⁄16 NT YCJT 11⁄2 NT YCJT 115⁄16 NT

Hub City FB260N-11⁄4 S FB260N-11⁄4 FB260N-13⁄8 FB260N-17⁄16 FB260N-11⁄2 FB260N-115⁄16 FB260-11⁄4 S FB260-11⁄4 FB260-13⁄8 FB260-17⁄16 FB260-11⁄2 FB260-115⁄16

Link-Belt KFX-S2E20 KFX-S220 KFX-S222 KFX-S223 KFX-S224 WFX-S2E20E WFX-S220E WFX-S222E WFX3-S223E WFX3-S224E WFX3-S231E

McGill NFC2-25-11⁄4S NFC2-25-11⁄4 NFC2-25-13⁄8 NFC2-25-17⁄16 NFC2-25-11⁄2 NFC2-25-115⁄16 FC2-25-11⁄4S FC2-25-11⁄4 FC2-25-13⁄8 FC2-25-17⁄16 FC-25-1 1⁄2 FC-25-115⁄16

Sealmaster BFT-20R BFT-20 BFT-22 BFT-23 BFT-24 BFT-31 SFT-20RC-CR SFT-20C-CR SFT-22C-CR SFT-23C-CR SFT-24C-CR SFT-31C-CR

SKF FYTB 11⁄4 STR FYTB 11⁄4 TR FYTB 13⁄8 TR FYTB 17⁄16 TR FYTB 11⁄2 TR


44


Four-boltflangeunits

Shaft diameter 3⁄4 15⁄16 1 11⁄8 13⁄16


MRC Composite ZMaRC C4F012ZM C4F015ZM C4F100ZM C4F102ZM C4F103ZM Composite Stainless steel C4F012SS C4F100SS C4F103SS ZMaRC-coated cast Iron ZMaRC Z4F012ZM Z4F015ZM Z4F100ZM Z4F102ZM Z4F103ZM Cast stainless steel Stainless steel S4F012SS S4F100SS S4F103SS

AMI Polymer Black oxide UCFPL204-12MZ UCFPL205-15MZ UCFPL205-16MZ UCFPL206-18MZ UCFPL206-19MZ Polymer Stainless steel MUCFPL204-12 MUCFPL205-15 MUCFPL205-16 MUCFPL206-18 MUCFPL206-19

Dodge Polymer TDC F4B-SCEZ-012-PCR F4B-SCEZ-015-PCR F4B-SCEZ-100-PCR F4B-SCEZ-102-PCR F4B-SCEZ-103-PCR Teflon coated TDC F4B-SCTC-012-CR F4B-SCTC-015-CR F4B-SCTC-100-CR F4B-SCTC-102-CR F4B-SCTC-103-CR

Fafnir Polymer TDC YCJ 3⁄4 PT YCJ 15⁄16 PT YCJ 1 PT YCJ 11⁄8 PT YCJ 13⁄16 PT Nickel plated TDC YCJ 3⁄4 NT YCJ 15⁄16 NT YCJ 1 NT YCJ 11⁄8 NT YCJ 13⁄16 NT

Hub City Nickel plated 52100 steel FB250N-3⁄4 FB250N-15⁄16 FB250N-1 FB250N-11⁄8 FB250N-13⁄16 Cast iron 52100 steel FB250-3⁄4 FB250-15⁄16 FB250-1 FB250-11⁄8 FB250-13⁄16

Link-Belt Polymer Black oxide KF-S212 KF-S215 KF-S216 KF-S218 KF-S219 Nylon coated Black oxide WF3-S212E WF3-S215E WF3-S216E WF3-S218E WF3-S219E

McGill Nickel plated Black oxide NFC4-25-3⁄4 NFC4-25-15⁄16 NFC4-25-1 NFC4-25-11⁄8 NFC4-25-13⁄16 Cast iron 52100 steel FC4-25-3⁄4 FC4-25-15⁄16 FC4-25-1 FC4-25-11⁄8 FC4-25-13⁄16

Sealmaster Polymer coated TDC BF-12 BF-15 BF-16 BF-18 BF-19 Polymer coated Black oxide SF-12C-CR SF-15C-CR SF-16C-CR SF-18C-CR SF-19C-CR

SKF Cast iron 52100 steel FY 3⁄4 TR FY 15⁄16 TR FY 1 TR FY 11⁄8 TR FY 13⁄16 TR

Tapped-basepillowblocks

Shaft diameter 3⁄4 15⁄16 1 11⁄8 13⁄16


MRC Composite ZMaRC CTB012ZM CTB015ZM CTB100ZM CTB102ZM CTB103ZM Composite Stainless steel CTB012SS CTB100SS CTB103SS ZMaRC-coated cast iron ZMaRC ZTB012ZM ZTB015ZM ZTB100ZM ZTB102ZM ZTB103ZM Cast stainless steel Stainless steel STB012SS STB100SS STB103SS

AMI Polymer Black oxide UCTBL204-12MZ UCTBL205-15MZ UCTBL205-16MZ UCTBL206-18MZ UCTBL206-19MZ Polymer Stainless steel MUCTBL204-12 MUCTBL205-15 MUCTBL205-16 MUCTBL206-18 MUCTBL206-19

Dodge Polymer TDC TB-SCEZ-012-PCR TB-SCEZ-015-PCR TB-SCEZ-100-PCR TB-SCEZ-102-PCR TB-SCEZ-103-PCR Cast iron 52100 steel TB-SC-012 TB-SC-015 TB-SC-100 TB-SC-102 TB-SC-103

Fafnir Cast iron 52100 steel STB 3⁄4 STB 15⁄16 STB 1 STB 11⁄8 STB 13⁄16

Hub City Cast iron 52100 steel TBP250-3⁄4 TBP250-15⁄16 TBP250-1 TPB250-11⁄8 TBP250-13⁄16

Link Belt Nickel plated Black oxide PT3-S212EK75 PT3-S215EK75 PT3-S216EK75 PT3-S218EK75 PT3-S219EK75 Nylon coated Black oxide WPT3-S212E WPT3-S215E WPT3-S216E WPT3-S218E WPT3-S219E

McGill Cast iron 52100 steel TBC-25-3⁄4 TBC-25-15⁄16 TBC-25-1 TBC-25-11⁄8 TBC-25-13⁄16

Sealmaster Polymer coated TDC BTB-12 BTB-15 BTB-16 BTB-18 BTB-19 Cast iron 52100 steel TB-12 TB-15 TB-16 TB-18 TB-19

45



11⁄4 11⁄4 13⁄8 17⁄16 11⁄2 115⁄16

MRC C2F104ZMR C2F104ZM C2F107ZM C2F108ZM C2F115ZM C2F104SSR C2F104SS C2F106SS C2F107SS C2F108SS Z2F104ZMR Z2F104ZM Z2F107ZM Z2F108ZM Z2F115ZM S2F104SSR S2F104SS S2F106SS S2F107SS S2F108SS

AMI UCFPL206-20MZ UCFPL207-20MZ UCFPL207-22MZ UCFPL207-23MZ UCFPL208-24MZ MUCFPL206-20 MUCFPL207-20 MUCFPL207-22 MUCFPL207-23 MUCFPL208-24

Dodge F4B-SCEZ-104S-PCR F4B-SCEZ-104-PCR F4B-SCEZ-106-PCR F4B-SCEZ-107-PCR F4B-SCEZ-108-PCR F4B-SCEZ-115-PCR F4B-SCEZ-104S-CR F4B-SCEZ-104-CR F4B-SCTC-106-CR F4B-SCEZ-107-CR F4B-SCEZ-108-CR F4B-SCEZ-115-CR

Fafnir YCJ 11⁄4 SPT YCJ 11⁄4 PT YCJ 13⁄8 PT YCJ 17⁄16 PT YCJ 11⁄2 PT YCJ 115⁄16 PT YCJ 11⁄4 SNT YCJ 11⁄4 NT YCJ 13⁄8 NT YCJ 17⁄16 NT YCJ 11⁄2 NT YCJ 115⁄16 NT

Hub City FB250N-11⁄4 S FB250N-11⁄4 FB250N-13⁄8 FB250N-17⁄16 FB250N-11⁄2 FB250N-115⁄16 FB250-11⁄4 S FB250-11⁄4 FB250-13⁄8 FB250-17⁄16 FB250-11⁄2 FB250-115⁄16

Link-Belt KF-S2E20 KF-S220 KF-S222 KF-S223 KF-S224 WF3-S2E20E WF3-S220E WF3-S222E WF3-S223E WF3-S224E WF3-S231E

McGill NFC4-25-11⁄4S NFC4-25-11⁄4 NFC4-25-13⁄8 NFC4-25-17⁄16 NFC4-25-11⁄2 NFC4-25-115⁄16 FC4-25-11⁄4S FC4-25-11⁄4 FC4-25-13⁄8 FC4-25-17⁄16 FC4-25-11⁄2 FC4-25-115⁄16

Sealmaster BF-20R BF-20 BF-22 BF-23 BF-24 BF-31 SF-20RC-CR SF-20C-CR SF-22C-CR SF-23C-CR SF-24C-CR SF-31C-CR

SKF FY 11⁄4 STR FY 11⁄4 TR FY 13⁄8 TR FY 17⁄16 TR FY 11⁄2 TR


11⁄4 11⁄4 13⁄8 17⁄16 11⁄2 115⁄16

MRC CTB104ZMR CTB104ZM CTB107ZM CTB108ZM CTB115ZM CTB104SSR CTB104SS CTB106SS CTB107SS CTB108SS ZTB104ZMR ZTB104ZM ZTB107ZM ZTB108ZM ZTB115ZM STB104SSR STB104SS STB106SS STB107SS STB108SS

AMI UCTBL206-20MZ UCTBL207-20MZ UCTBL207-22MZ UCTBL207-23MZ UCTBL207-24MZ MUCTBL206-20 MUCTBL207-20 MUCTBL207-22 MUCTBL207-23 MUCTBL207-24

Dodge TB-SCEZ-104S-PCR TB-SCEZ-104-PCR TB-SCEZ-106-PCR TB-SCEZ-107-PCR TB-SCEZ-108-PCR TB-SC-104S TB-SC-104 TB-SC-106 TB-SC-107 TB-SC-108 TB-SC-115

Fafnir STB 11⁄4S STB 11⁄4 STB 13⁄8 STB 17⁄16 STB 11⁄2

Hub City TBP250-11⁄4S TBP250-11⁄4 TBP250-13⁄8 TBP250-17⁄16 TBP250-11⁄2 TBP250-115⁄16

Link Belt PT3-S2E20EK75 PT3-S220EK75 PT3-S222EK75 PT3-S223EK75 PT3-S224EK75 PT3-S231EK75 WPT3-S2E20E WPT3-S220E WPT3-S222E WPT3-S223E WPT3-S231E

McGill TBC-25-11⁄4S TBC-25-11⁄4 TBC-25-13⁄8 TBC-25-17⁄16 TBC-25-11⁄2 TBC-25-115⁄16

Sealmaster BTB-20R BTB-20 BTB-22 BTB-23 BTB-24 BTB-31 TB-20R TB-20 TB-22 TB-23 TB-24 TB-31


46


Three-boltbracketflangeunits

Shaft diameter 3⁄4 15⁄16 1 11⁄8 13⁄16


MRC Composite ZMaRC CBF012ZM CBF015ZM CBF100ZM CBF102ZM CBF103ZM Composite Stainless steel CBF012SS CBF100SS CBF0103SS

AMI Polymer Black oxide UCFBL204-12MZ UCFBL205-15MZ UCFBL205-16MZ Polymer Stainless steel MUCFBL204-12 MUCFBL205-15 MUCFBL205-16

Dodge Polymer TDC FB-SCEZ-012-CR FB-SCEZ-015-CR FB-SCEZ-100-CR FB-SCEZ-102-CR Nylon coated TDC FB-SCEZ-012-NY FB-SCEZ-015-NY FB-SCEZ-100-NY FB-SCEZ-102-NY FB-SCEZ-104S-NY

Link Belt Nickel plated Black oxide FB3-S212EK75 FB3-S215EK75 FB3-S216EK75 FB3-S218EK75 FB3-S219EK75 Nylon coated Black oxide WFB3-S212E WFB3-S215E WFB3-S216E WFB3-S218E WFB3-S219E

McGill Nickel plated Black oxide NMFB-3⁄4 NMFB-15⁄16 NMFB-1 NMFB-11⁄8 NMFB-13⁄16 Cast iron 52100 steel MFB-3⁄4 MFB-15⁄16 MFB-1 MFB-11⁄8 MFB-13⁄16

Sealmaster Polymer coated TDC BFB-12 BFB-15 BFB-16 BFB-18 BFB-19 Polymer coated Black oxide FB-12C-CR FB-15C-CR FB-16C-CR FB-18C-CR FB-19C-CR

Wide-slottake-upunits

Shaft diameter 3⁄4 15⁄16 1 11⁄8 13⁄16


MRC Composite ZMaRC CTW012ZM CTW015ZM CTW100ZM CTW102ZM CTW103ZM Composite Stainless steel CTW012SS CTW100SS CTW103SS

AMI Polymer Black oxide UCTPL204-12MZ UCTPL205-15MZ UCTPL205-16MZ UCTPL206-18MZ UCTPL206-19MZ Polymer Stainless Steel MUCTPL204-12 MUCTPL205-15 MUCTPL205-16 MUCTPL206-18 MUCTPL206-19

Dodge Polymer TDC WSTU-SCEZ-012-PCR WSTU-SCEZ-015-PCR WSTU-SCEZ-100-PCR WSTU-SCEZ-102-CR WSTU-SCEZ-103-PCR Nickel plated 52100 steel WSTU-SCNP-012 WSTU-SCNP-015 WSTU-SCNP-100 WSTU-SCNP-102 WSTU-SCNP-103

Hub City Ductile iron 52100 steel WSTU- 3⁄4 WSTU- 15⁄16 WSTU-1 WSTU-11⁄8 WSTU-13⁄16 Link Belt Nickel plated Black oxide TH3-S212EK75 TH3-S215EK75 TH3-S216EK75 TH3-S218EK75 TH3-S219EK75

Nylon coated Black oxide WTH3-S212E WTH3-S215E WTH3-S216E WTH3-S218E WTH3-S219E McGill Nickel plated Black oxide NTC-25- 3⁄4 NTC-25- 15⁄16 NTC-25-1 NTC-25-11⁄8 NTC-25-13⁄16

Sealmaster Polymer TDC BST-12 BST-15 BST-16 BST-18 BST-19 Polymer Black oxide ST-12 ST-15 ST-16 ST-18 ST-19

SKF Cast iron 52100 steel TU 3⁄4 TR TU 15⁄16 TR TU1TR TU 11⁄8 TR TU 13⁄16TR

Narrow-slottake-upunits

Shaft diameter 3⁄4 15⁄16 1 11⁄8 13⁄16


MRC Composite ZMaRC CTN012ZM CTN015ZM CTN100ZM CTN102ZM CTN103ZM Composite Stainless steel CTN012SS CTN100SS CTN103SS

Dodge Polymer TDC NSTU-SCEZ-012-PCR NSTU-SCEZ-015-CR NSTU-SCEZ-100-PCR NSTU-SCEZ-102-CR NSTU-SCEZ-103-PCR

Nickel plated 52100 steel NSTU-SCNP-012 NSTU-SCNP-015 NSTU-SCNP-100 NSTU-SCNP-102 NSTU-SCNP-103

Hub City Nickel plated 52100 steel TU250N-3⁄4 TU250N-15⁄16 TU250N-1 TU250N-11⁄8 TU250N-13⁄16

Ductile iron 52100 steel TU250-3⁄4 TU250-15⁄16 TU250-1 TU250-11⁄8 TU250-13⁄16

47



11⁄4 11⁄4 13⁄8 17⁄16 11⁄2 115⁄16

MRC CBF104ZMR CBF104ZM CBF107ZM CBF108ZM CBF115ZM CBF104SSR CBF104SS CBF106SS CBF107SS CBF108SS

AMI

Dodge FB-SCEZ-104-CR FB-SCEZ-106-CR FB-SCEZ-107-CR

Link Belt FB3-S2E20EK75 FB3-S220EK75 FB3-S222EK75 FB3-S223EK75 WFB3-S2E20E WFB3-S220E WFB3-S222E WFB3-S223E

McGill NMFB-11⁄4S NMFB-11⁄4 NMFB-13⁄8 NMFB-17⁄16 NMFB-115⁄16 MFB-11⁄4S MFB-11⁄4 MFB-13⁄8 MFB-17⁄16 MFB-115⁄16

Sealmaster BFB-20R BFB-20 BFB-22 BFB-23 BFB-24 BFB-31 FB-20RC-CR FB-20C-CR FB-22C-CR FB-23C-CR FB-24C-CR FB-31C-CR


11⁄4 11⁄4 13⁄8 17⁄16 11⁄2 115⁄16

MRC CTW104ZMR CTW104ZM CTW107ZM CTW108ZM CTW115ZM CTW104SSR CTW104SS CTW106SS CTW107SS CTW108SS

AMI UCTPL206-20MZ UCTPL207-20MZ UCTPL207-22MZ UCTPL207-23MZ UCTPL208-24MZ MUCTPL206-20 MUCTPL207-20 MUCTPL207-22 MUCTPL207-23 MUCTPL208-24

Dodge WSTU-SCEZ-104S-PCR WSTU-SCEZ-104-PCR WSTU-SCEZ-106-PCR WSTU-SCEZ-107-PCR WSTU-SCEZ-108-PCR WSTU-SCEZ-115-PCR WSTU-SCNP-104S WSTU-SCNP-104 WSTU-SCNP-106 WSTU-SCNP-107 WSTU-SCNP-108 WSTU-SCNP-115

Hub City WSTU-11⁄4S WSTU-11⁄4 WSTU-13⁄8 WSTU-17⁄16 WSTU-11⁄2 WSTU-115⁄16 Link Belt TH3-S2E20EK75 TH3-S220EK75 TH3-S222EK75 TH3-S223EK75 TH3-S224EK75 TH3-S231E

WTH3-S2E20E WTH3-S220E WTH3-S222E WTH3-S223E WTH3-S224E WTH3-S231E McGill NTC-25-11⁄4S NTC-25-11⁄4 NTC-25-13⁄8 NTC-25-17⁄16 NTC-25-11⁄2 NTC-25-115⁄16

Sealmaster BST-20R BST-20 BST-22 BST-23 BST-24 BST-31 ST-20R ST-20 ST-22 ST-23 ST-24 ST-31

SKF TU 11⁄4 STR TU 11⁄4 TR TU 13⁄8 TR TU 17⁄16 TR TU 11⁄2 TR TU 115⁄16 TR



11⁄4 11⁄4 13⁄8 17⁄16 11⁄2 115⁄16

MRC CTN104ZMR CTN104ZM CTN107ZM CTN108ZM CTN115ZM CTN104SSR CTN104SS CTN106SS CTN107SS CTN108SS

Dodge NSTU-SCEZ-104S-PCR NSTU-SCEZ-104-PCR NSTU-SCEZ-106-PCR NSTU-SCEZ-107-PCR NSTU-SCEZ-108-PCR NSTU-SCEZ-115-PCR NSTU-SCNP-104 NSTU-SCNP-104 NSTU-SCNP-106 NSTU-SCNP-107 NSTU-SCNP-108 NSTU-SCNP-115

Hub City TU250N-11⁄4S TU250N-11⁄4 TU250N-13⁄8 TU250N-17⁄16 TU250N-11⁄2 TU250N-115⁄16 TU250-11⁄4S TU250-11⁄4 TU250-13⁄8 TU250-17⁄16 TU250-11⁄2 TU250-115⁄16

48

Marathon mounted unit basic comparison - metric shafts

Pillowblocks

Shaft diameter 20mm 25mm 30mm 35mm 40mm


MRC Composite ZMaRC CPB20ZM CPB25ZM CPB30ZM CPB35ZM CPB40ZM Composite Stainless steel CPB20SS CPB25SS CPB30SS CPB35SS CPB40SS ZMaRC-coated cast iron ZMaRC ZPB20ZM ZPB25ZM ZPB30ZM ZPB35ZM ZPB40ZM Cast stainless steel Stainless steel SPB20SS SPB25SS SPB30SS SPB35SS SPB40SS

AMI Polymer Black oxide UCPPL-204MZ UCPPL-205MZ UCPPL-206MZ UCPPL-207MZ UCPPL-208MZ

Polymer Stainless steel MUCPPL-204 MUCPPL-205 MUCPPL-206 MUCPPL-207 MUCPPL-208

Dodge Polymer TDC P2B-SCEZ-20M-WCR P2B-SCEZ-25M-WCR P2B-SCEZ-30M-WCR P2B-SCEZ-35M-WCR P2B-SCEZ-40M-WCR

Cast iron 52100 steel P2B-SC-20M P2B-SC-25M P2B-SC-30M P2B-SC-35M P2B-SC-40M

Fafnir Cast iron 52100 steel YAS20 YAS25 YAS30 YAS35 YAS40

Polymer TDC YAS20PT YAS25PT YAS30PT YAS35PT YAS40PT

Link-Belt Nickel plated Black oxide P3-U2M20NK75 P3-U2M25NK75 P3-U2M30NK75 P3-U2M35NK75 P3-U2M40NK75

Cast iron 52100 steel P3-U2M20N P3-U2M25N P3-U2M30N P3-U2M35N P3-U2M40N

McGill Nickel plated Black oxide NC-25-20 NC-25-25 NC-25-30 NC-25-35 NC-25-40

Cast iron 52100 steel C-25-20 C-25-25 C-25-30 C-25-35 C-25-40

Sealmaster Nickel plated Black oxide NP-204NK NP-205NK NP-206NK NP-207NK NP-208NK

Cast iron 52100 steel NP-204 NP-205 NP-206 NP-207 NP-208

SKF Cast iron 52100 steel SY20TR SY25TR SY30TR SY35TR SY40TR

Two-boltflangeunits



MRC Composite ZMaRC C2F20ZM C2F25ZM C2F30ZM C2F35ZM C2F40ZM Composite Stainless steel C2F20SS C2F25SS C2F30SS C2F35SS C2F40SS ZMaRC-coated cast iron ZMaRC Z2F20ZM Z2F25ZM Z2F30ZM Z2F35ZM Z2F40ZM Cast stainless steel Stainless steel S2F20SS S2F25SS S2F30SS S2F35SS S2F40SS

AMI Polymer Black oxide UCNFL-204MZ UCNFL-205MZ UCNFL-206MZ UCNFL-207MZ UCNFL-208MZ Polymer Stainless steel MUCNFL-204 MUCNFL-205 MUCNFL-206 MUCNFL-207 MUCNFL-208

Dodge Polymer TDC F2B-SCEZ-20M-WCR F2B-SCEZ-25M-WCR F2B-SCEZ-30M-WCR F2B-SCEZ-35M-WCR F2B-SCEZ-40M-WCR Cast iron 52100 steel F2B-SC-20M F2B-SC-25M F2B-SC-30M F2B-SC-35M F2B-SC-40M

Fafnir Polymer TDC YCJT20PT YCJT25PT YCJT30PT YCJT35PT Cast iron 52100 steel YCJT20 YCJT25 YCJT30 YCJT35 YCJT40

Link-Belt Polymer Black oxide KFX-2M20E KFX-2M25E KFX-2M30E Nylon coated Black oxide KLFX-2M20E KLFX-2M25E KLFX-2M30E

McGill Nickel plated Black oxide NFC2-25-20 NFC2-25-25 NFC2-25-30 NFC2-25-35 NFC2-25-40 Cast iron 52100 steel FC2-25-20 FC2-25-25 FC2-25-30 FC2-25-35 FC2-25-40

Sealmaster Nickel plated Black oxide SFT-204NK SFT-205NK SFT-206NK SFT-207NK SFT-208NK Cast iron 52100 steel SFT-204 SFT-205 SFT-206 SFT-207 SFT-208

SKF Cast iron 52100 steel FYBT20TR FYBT25TR FYBT30TR FYBT35TR FYBT40TR




MRC Composite ZMaRC C4F20ZM C4F25ZM C4F30ZM C4F35ZM C4F40ZM Composite Stainless steel C4F20SS C4F25SS C4F30SS C4F35SS C4F40SS ZMaRC-coated cast iron ZMaRC Z4F20ZM Z4F25ZM Z4F30ZM Z4F35ZM Z4F40ZM Cast stainless steel Stainless steel S4F20SS S4F25SS S4F30SS S4F35SS S4F40SS

AMI Polymer Black oxide UCFPL-204MZ UCFPL-205MZ UCFPL-206MZ UCFPL-207MZ UCFPL-208MZ Polymer Stainless steel MUCFPL-204 MUCFPL-205 MUCFPL-206 MUCFPL-207 MUCFPL-208

Dodge Polymer TDC F4B-SCEZ-20M-WCR F4B-SCEZ-25M-WCR F4B-SCEZ-30M-WCR F4B-SCEZ-35M-WCR F4B-SCEZ-40M-WCR Cast iron 52100 steel F4B-SC-20M F4B-SC-25M F4B-SC-30M F4B-SC-35M F4B-SC-40M

Fafnir Polymer TDC YCJ20PT YCJ25PT YCJ30PT YCJ35PT YCJ40PT Cast iron 52100 steel YCJ20 YCJ25 YCJ30 YCJ35 YCJ40

Link-Belt Polymer Black oxide KF-2M25E KF-2M30E KF-2M35E KF-2M40E Teflon coated Black oxide KLF-2M25E KLF-2M30E KLF-2M35E KLF-2M40E

McGill Nickel plated Black oxide NFC4-25-20 NFC4-25-25 NFC4-25-30 NFC4-25-35 NFC4-25-40 Cast iron 52100 steel FC4-25-20 FC4-25-25 FC4-25-30 FC4-25-35 FC4-25-40

Sealmaster Nickel plated Black oxide SF-204NK SF-205NK SF-206NK SF-207NK SF-208NK Cast iron 52100 steel SF-204 SF-205 SF-206 SF-207 SF-208

SKF Cast iron 52100 steel FY20TR FY25TR FY30TR FY35TR FY40TR

49

Marathon mounted unit basic comparison - metric shafts




MRC Composite ZMaRC CTB20ZM CTB25ZM CTB30ZM CTB35ZM CTB40ZM Composite Stainless steel CTB20SS CTB25SS CTB30SS CTB35SS CTB40SS ZMaRC-coated cast iron ZMaRC ZTB20ZM ZTB25ZM ZTB30ZM ZTB35ZM ZTB40ZM Cast stainless steel Stainless steel STB20SS STB25SS STB30SS STB35SS STB40SS

AMI Polymer Black oxide UCTBL-204MZ UCTBL-205MZ UCTBL-206MZ UCTBL-207MZ UCTBL-208MZ Polymer Stainless steel MUCTBL-204 MUCTBL-205 MUCTBL-206 MUCTBL-207 MUCTBL-208

Fafnir Cast iron 52100 steel STB20 STB25 STB30 STB35 STB40 McGill Cast iron 52100 steel TBC-25-20 TBC-25-25 TBC-25-30 TBC-25-35 TBC-25-40

Sealmaster Cast iron 52100 steel TB-204 TB-205 TB-206 TB-207 TB-208




MRC Composite ZMaRC CBF20ZM CBF25ZM CBF30ZM CBF35ZM CBF40ZM Composite Stainless steel CBF20SS CBF25SS CBF30SS CBF35SS CBF40SS

AMI Cast iron 52100 steel UCFK-204 UCFK-205 UCFK-206 UCFK-207 UCFK-208 McGill Nickel plated Black oxide NMFB-20 NMFB-25 NMFB-30 NMFB-35 NMFB-40

Sealmaster Cast iron 52100 steel FB-204 FB-205 FB-206 FB-207 FB-208




MRC Composite ZMaRC CTN20ZM CTN25ZM CTN30ZM CTN35ZM CTN40ZM Composite Stainless steel CTN20SS CTN25SS CTN30SS CTN35SS CTN40SS

Dodge Nickel plated 52100 steel NSTUSC20MNP NSTUSC25MNP NSTUSC30MNP NSTUSC35MNP NSTUSC40MNP Cast iron 52100 steel NSTUSC20M NSTUSC25M NSTUSC30M NSTUSC35M NSTUSC40M




MRC Composite ZMaRC CTW20ZM CTW25ZM CTW30ZM CTW35ZM CTW40ZM Composite Stainless steel CTW20SS CTW25SS CTW30SS CTW35SS CTW40SS

AMI Polymer Black oxide UCTPL-204MZ UCTPL-205MZ UCTPL-206MZ UCTPL-207MZ UCTPL-208MZ Polymer Stainless steel MUCTPL-204 MUCTPL-205 MUCTPL-206 MUCTPL-207 MUCTPL-208

Dodge Cast iron 52100 steel WSTU-SC-20M WSTU-SC-25M WSTU-SC30M WSTU-SC-35M WSTU-SC-40M Sealmaster Polymer Black oxide ST-204 ST-205 ST-206 ST-207 ST-208

SKF Cast iron 52100 steel TU20TR TU25TR TU30TR TU35TR TU40TR


® MRC, Marathon and ZMaRC are registered trademark of SKF USA Inc.The contents of this publication are the copyright of the publisher and may not be reproduced (even extracts) unless prior written permission is granted. Every care has been taken to ensure the accuracy of the information contained in this publication but no liability can be accepted for any loss or damage whether direct, indirect or consequential arising out of use of the information contained herein.

© 2001 SKF USA Inc. Publication M660-710 (2M/AN 5/2012) Version 5/2012 Printed in U.S.A.

SKF USA Inc.Lansdale, PA 19446, USA

Call toll free1-800-MRC-7000267-436-6000

www.skfusa.com/mrc

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