USA®

RINGSTOLERANCE

Toll Free 1-877-865-7464www.usatolerancerings.com

RReRev. 08-28-22201011333_A

2

USATOLERANCE

®

RINGS

AutomotiveABS Toner RingsSteering Column Anti-Theft DeviceTiming Sprocket Camshaft ConnectionAlternator BearingsBlower Motor Bearings

Power ToolsSawsSandersRouters

Electric MotorsBearings in HousingsBearings on ShaftsPhenolic Brush HolderRotor Tachometers on ShaftsFans

PumpsCeramic Bearings and SleevesImpellersBearings

Lawn and GardenRototiller Knob MountsString Trimmer Bearing MountsLawn Mowers

Steering ColumnAnti-Theft Device

Bearing Mountin Alloy Housing

String Trimmer Gear Box

Brush Holder

Impeller on Shaft

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The Company

Met any good TOLERANCE RING companies lately?Never heard of a TOLERANCE RING? We’re USATOLERANCE RINGS—an exceptional company; anexceptional product! We’ve been meeting design needsfor American industry since 1961. Our customersinclude manufacturers of automobiles, home appli-ances, power tools, electric motors, and computer diskdrives as well as many others.

TOLERANCE RINGS are tough enough to be an antitheft device on a steering column, but delicate enough tocenter a miniature ball bearing in a disk drive.

Our company is as flexible as our product. We respondto customers, large and small, with efficient, courteousservice; with reliable and cost-effective solutions to designneeds; with rapid turnaround of sample parts and withdevelopment testing in customer components. Our facilityin West Trenton, New Jersey, along with our Europeanaffiliate in the United Kingdom, offers parts produced involume to levels of extraordinary accuracy and consistency.USA TOLERANCE RINGS is the singular source forTOLERANCE RINGS in North America.

Join the ranks of the hundreds of engineers, who, whenconfronted with a design problem made the happy discov-ery of USA TOLERANCE RINGS—an exceptional company;an exceptional product.

USATOLERANCE

®

RINGS

Table of Contents

Introduction .................................................................4Manufacturing Process .................................................5Common Uses of Tolerance Rings .................................6

Mounting Bearings ....................................................... 6Torque Transfer ............................................................ 6Differential Thermal Expansion ................................... 7Component Fastening .................................................. 7Reclamation of Bad Parts ............................................. 7

Types of Tolerance Rings ..............................................8AN Style ........................................................................ 8ANL Style ...................................................................... 8BN Style ........................................................................ 9

Types of Mounting ...................................................... 10Centered Arrangement ............................................... 10Piloted (Half-Centered) Arrangement........................ 10Free Arrangement ...................................................... 10

Design of Mating Parts ............................................... 9Assembly Procedure Considerations ............................ 9Operating Principle ..................................................... 11Part Identification ...................................................... 12Application Examples ..................................................17AN Series Data ........................................................... 13Bearing and ANL Series Data ...................................... 14BN Series Data ........................................................... 15New Project Information Sheet ................................... 16

USA TOLERANCE RINGS 85 Route 31 North Pennington, New Jersey 08534 Toll Free: 1-877-865-7464 Telephone: 609-745-5000 Fax: 609-745-5012

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USATOLERANCE

®

RINGS

Introduction

Tolerance Rings are highly engineered frictional fasteners used to economically join mating cylindrical parts. Manu-factured from high quality spring steel or stainless steel strip, Tolerance Rings are widely accepted as a fastening devicecapable of handling torque transfer, axial retention and radial loading between mating machine parts.

Technical and economical advantages ensured by use of Tolerance Rings include:

Rapid, low cost assembly

Wider dimensional tolerance of mating diameters for interference fits

Compensation for ∆ thermal expansion between mating materials

Elimination of keys, pins, adhesives, D-shafts, threads and splines

Compensation for small amounts of misalignment of up to 1/2° draft angle

Infinite rotational indexing of parts prior to assembly

Modification to spring rates/critical frequencies of assemblies

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Custom Design Flexibility

Many non-catalog parts are available from inventoryand thousands of additional configurations can be madewith Standard Tooling and Standard Materials! Whyconsider a special? When radial or torque capacity of astandard ring does not meet application requirements,specials are ECONOMICAL alternatives. Yes, even ifcatalog ratings are 10 times too high or 10 times too lowwe often can vary the stiffness by an order of magnitudesimply by substituting different thicknesses of material orby adjusting the pitch which provides more or less corru-gations in a ring. Therefore, if catalog stated values areonly a fraction of what you need, call us for special designconsiderations. Simply have information per your DesignSpecifications form handy to speed along our response.

A Glimpse ofOur Manufacturing Process

1. Begin with a strip of material of proper thickness,cut to the proper width.

2. Run the material through our tooling disks whichlook like special gears. This tooling determines thespacing between the corrugations (pitch), the widthof the corrugations, and the corrugation height (byadjusting the centerline distance between the disks.)

3. Measure a length of corrugated strip appropriate forcircumference, then cut and roll it.

It is simple to corrugate different material thicknesseson a given set of tooling, or to cut different lengths ofcorrugated strip to accommodate various diameters. Ourlimitations are that with a given pitch we have finitetooling widths available. Reference the chart on page 13 todetermine the ring widths available. The width values aredependent on the pitch, not the diameter of the ring.

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USATOLERANCE

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RINGS

Mounting Bearings

Tolerance Rings are ideally suited for mountingbearings since traditional installations require housing andshaft diameters to be held within a tolerance range of about0.0005". Shaft or housing tolerances may be increased to.002", even up to .006" on larger diameters.

Care should be taken to examine worst-case loadingconditions, such as acceleration on start-up or impactloading and overloads, since the Tolerance Ring torquecapacity should not normally be exceeded. If torquecapacity is exceeded and slippage occurs, degradation ofperformance may result.

Common Uses of Tolerance Rings

Torque Transfer

Tolerance Rings are used successfully to transmittorque from one cylindrical component to another.

Examples include mounting impellers, gears, sprocketsand pulleys to shafts. The same advantages as describedearlier apply for torque transfer applications—broadermachining tolerances, elimination of set screws, adhesives,knurls, D-shafts and nuts. In some cases even splines maybe replaced with a Tolerance Ring.

Housing and Bearing

Tolerance Rings used as anti-theft devicesin steering columns.

In special designs where slow rotational speeds of shortduration and a broad break-away torque range are acceptable,the Tolerance Ring may replace shear pins, providingoverload protection. These applications should be reviewedby our engineering department.

When torque and radial loading must be handledsimultaneously, consult our Engineering Staff forrecommendations.

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With Tolerance Ring

Without Tolerance Ring

Temperature F°

Pres

sing

For

ce lb

s.

100 150 200 250

100

300

500

Component Fastening

Tolerance Rings are employed as fasteners for applica-tions such as the installation of knobs onto shafts andbrush holders into electric motor housings. ToleranceRings provide positive retention and allow for infiniterotational indexing prior to assembly.

Knob

Mounting ABS Toner Rings

Brush Holder

Reclamation of Bad Parts

Tolerance Rings are used to salvage worn housing boresor bores that have been accidentally machined oversized.Note that housing bores must be re-machined to appropriatediameters to accommodate the Tolerance Ring.

Differential Thermal Expansion

Tolerance Rings are used with great success incompensating for differential thermal expansion of matingparts. Examples include aluminum housings with steelbearings, silicon carbide bushings and sleeves mated to steelhousing and shafts, and glass-filled plastic impellers to shafts.Tolerance Rings maintain retention and minimum torquevalues, and may accommodate wide variations in diameterwithout overstressing brittle components.

The graph above illustrates the superior performance ofthe Tolerance Ring in retaining a 2" diameter ball bearing inan aluminum housing. With .0012" traditional interferencefit, an installation force of 500 lbs. is required. The bearingbecomes loose at a temperature of 170°F. With the ToleranceRing, an initial installation force of only 320 lbs is required,and retention remains high at 230 lbs. even at 270°F!

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USATOLERANCE

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RINGS

Actuator Arm Bearing

ShaftTOLERANCE RINGTypes of Tolerance Rings

Tolerance Rings are made in three varieties: AN, ANL,and BN. The appropriate ring for your application willdepend on such factors as assembly procedure, which partis a “nominal” diameter, and which part may be morereadily modified to accept the Tolerance Ring in the design.

Tolerance Rings Mount Bearingsin Disk Drive Actuator Arms

ANL StyleThe ANL style may be described as a very light duty AN

style ring. It is often characteristic of this ring to not havea circular shape in the free state.

AN StyleThe AN style ring is “open” in the free state so that when

installed inside a bore the ring will conform to that bore andbe self retaining. If used with the centered or half-centeredarrangement no further handling of the ring is necessaryduring assembly of the mating machine parts. When usedwith the free arrangement, the ring must be supported axiallyduring assembly of the mating machine parts.

The AN style is cut to length so as to fit outside a“nominal” circumference. Examples for use of the AN styleinclude mounting a bearing outer race, or mounting a fanor pulley to a shaft of common inch or metric diameter.

Corrugations faceinward on AN andANL rings. Corruga-tion heights rangefrom .014" to .0394"for most rings.

Designed for light duty, ANLrings have .014" corrugationheight standard and use .004"thick material.

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Blower Wheel

BN StyleBN style rings have a free-state diameter smaller than the

shaft diameter over which they are to be installed, so thatwhen mounted to the shaft the rings conform to and becomeself-retaining on the shaft. If used with the centered or half-centered arrangement, the ring will snap into the groove andno further handling of the ring is necessary. If used with thefree arrangement, the ring must be axially supported duringassembly of the mating parts.

The BN ring is cut to fit inside a nominal circumfer-ence. Examples for use of the BN ring include mounting abearing inner race to a shaft, or assemblies in whichmodification of the shaft is more practical than modifyingthe bore of the outer member.

Irw

tdnsT“

The free-state shape of theBN ring may be overlappedor may have a slight gap,but the ring should alwaysbe self-retaining to thespecified shaft diameter.

Corrugations point outwardin the BN style. Corruga-tion heights are .0196" to.0394" for most rings.

▼

▼

Design of Mating PartsAssembly Procedure Considerations

The “tops” of the corrugations (The I.D. on AN stylerings, or the O.D. on BN rings) are formed with a roundedcontour, which assists as a lead-in edge during assembly.It is very important that the lead-in edge of the mating partis contoured with a generous radius or a shallow (15°)chamfer. Sharp corners on the lead-in edge could dig inand mar the Tolerance Ring, sacrificing performance.

Best results of assembling mating parts are achieved byusing an arbor press and fixturing the parts to hold themsquarely in place during assembly. Except for very lightduty rings, aligning the parts by hand and/or hammeringthe assembly together jeopardizes alignment and perfor-mance. If misalignment occurs during assembly, there is atendency for the lead-in edge of the mating part to flattencorrugations in one area of the Tolerance Ring, resulting inreduction of ring integrity.

re = .010 max for dia < 2" = .020 max for dia > 2"bmin = (3 x re) + ring width

Groove in shaft O.D. Groove in housing bore

When using the centered arrangement, a small radius andadequate groove width should be used to ensure that theTolerance Ring may be properly seated on the cylindricalsurface.

Radius or chamfer areoptions for part whichslides on corrugationsduring assembly.

Misalignment as shownwill cause flattening ofcorrugations in thiscircumferential portion ofthe ring.

Keep Alignment True

re

b

re

b

15°

10

USATOLERANCE

®

RINGS

FREE PILOTED CENTERED

Step

ped

Dia

met

er

Gro

oved

Dia

met

er

Types of Mounting

Centered ArrangementThis arrangement provides a groove in the housing for

AN rings or a groove in the shaft for BN rings. These groovescapture the ring axially on both sides and simplify assembly.When the shoulder (stepped) diameter is held close to thenominal diameter, the following advantages occur:

• Improved alignment of parts during installation

• Improved concentricity due to low radial clearance atthe shoulder

• Excessive radial loads and shock loads can be accom-modated since the Tolerance Ring is protected in itsown cavity. The corrugations will deflect until theshoulder or stepped diameter contacts the matingmember. Additional loading will be transmittedthrough the step, and will not act to further deflector crush the corrugations.

AN Ring Mounting Arrangements

Free ArrangementThis arrangement will not provide axial support to the

ring in either direction, so the assembly machine must befixtured to “back up” or axially locate the ring temporarilywhile the mating components are assembled. The Toler-ance Ring will be subjected to all radial loading and shouldbe selected with appropriate capacity.

Piloted (Half-Centered) ArrangementThis arrangement is similar to the centered configura-

tion, at a lower cost. With the exception of piloting foralignment, this method may provide the advantages of thecentered arrangement when the stepped diameter is heldclose to the nominal diameter of the mating component.

Brush Holder

11

USATOLERANCE

®

RINGS

(G1 + G2) /2G1(tightest fit)

G2(loosest fit)

0

TC at G1

Diametral Gap (in)

Torq

ue

(in

-lb

s)Radial

Capacity

TorqueCapacityRad

ial

Capac

ity

0

RC

Rad

ial

Cap

acit

y(l

bs)

Operating Principle

Tolerance Rings work on the two physics principles ofsprings and friction.

Spring Formula: F = kxwhere F = force required to compress the spring (lbs or N) k =spring rate (lbs/in or N/m) x = distance the spring is compressed (inches or m)

Friction Formula: Ff = cN

where Ff = friction force opposing movement (lbs or N) c = coefficient of friction N = force which is perpendicular to the surface.

Each corrugation (“wave” or “bump”) on a ToleranceRing acts like a stiff radial spring. We can calculate thespring rate, k, specify the deflection, x, and estimate thecoefficient of friction. All this, coupled with limits relatedto yield strength of the material, permits us to estimatethe assembly forces, torque, and radial load capacities of aTolerance Ring.

The load capacities, both torque and radial, vary withthe amount of interference. Radial capacity is related tothe yield limits of the material, the cumulative compres-sion of the corrugations caused by interference fit plusexternally applied radial loads, and the preload caused bythe interference fit. Torque capacities are related to theamount of interference and coefficient of friction.

The graph below summarizes the capacities in practi-cal terms. G1 represents the minimum diametral gap(smallest space, tightest fit) and G2 represents the maxi-mum diametral space (biggest gap, loosest fit). Torquecapacity is maximum in the tightest fit at G1 and drops tominimum at the loosest fit at G2. Radial capacity is atmaximum value throughout the top half of the interfer-ence range (due to a preload effect), but drops linearly(right to left on the curve) from the midpoint to thetightest fit at G1.

The Curve Demonstrates that Maximum Torque Values andMaximum Radial Capacities Cannot Exist Simultaneously.

Load capacities as related to the amount of interference fit.

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SIZE RANGE OF STANDARD RINGS

In: 1/4, 5/16, 3/8, 7/16, 1/2, 5/8mm: 5, 6

In: 1/4, 5/16, 3/8, 1/2, 5/8, 3/4mm: 4, 5, 6, 8

mm: 4, 5, 6, 7, 8, 10, 14, 15This Pitch is ANL Version Only

In: 1/4, 3/8, 1/2, 5/8, 3/4, 1, 1-1/8mm: 6, 7, 8, 9, 10, 13, 16, 22

In: 1/4, 3/8, 1/2, 5/8, 3/4, 7/8, 1,1-1/4, 1-1/2

mm: 7, 10, 11, 12, 13, 14, 15,16, 17, 18, 19, 20, 21, 30

mm: 10, 15, 16

mm: 19, 21

In: 1/2, 5/8mm: 12

.059"1.5 mm

.0984"2.5 mm

.1236"

.1378"3.5 mm

.1968"

5 mm

.248"6.3 mm

.2953"7.5 mm

.370"9.4 mm

.006"

.15 mm

.008"

.2 mm

.004"

.1 mm

.012"

.3 mm

.016"

.4 mm

.020"

.5 mm

.024"

.6 mm

.028"

.7 mm

DiameterRange

MaterialThicknessPitchRing Widths Available

Inch .18 / .29mm 4.5 / 7.5

Inch .31 / .73mm 8 / 18

Inch .5+mm

Inch .70 / 1.23mm 19 / 30

Inch 1.25+

mm 32+

Inch 2+mm 52+

Inch 3+mm 82+

Inch 5+mm 125

Part Identification ChartBN

AN 125

5 X

2

C

S

6

075

DESIGNATESSPECIAL DESIGN

MATERIAL:S = 301 Stainless SteelC = Carbon SteelH = HastelloyM = Monel

➤ ➤ ➤ ➤ ➤ ➤

SERIES:AN, ANL, BN

DIAMETER:mm or x.xx"

INCH SERIES = blankMETRIC SERIES = X

WIDTH:mm or x.xx"

SAMPLE PART NUMBER IDENTIFICATION:BN 5 X 6 C BN series, 5 mm DIA, 6 mm width, carbon steelAN 125075 S2 AN series, 1-1/4" DIA, 3/4" width, stainless, special

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AN Series

0.2360.2500.2360.2500.2500.2500.2500.2500.7500.2500.1970.2500.2360.2500.2760.5000.5000.4720.5000.5120.5000.5000.4330.5000.5000.4720.5000.5120.5000.5510.5000.500

0.1570.1880.2360.2500.3130.3750.4380.5000.5000.6250.6300.6880.7480.7500.8660.8751.0001.1021.1251.1811.2501.3751.3781.5001.5631.5751.6251.6541.7501.8501.8752.000

4 mm3/166 mm1/45/163/87/161/21/25/8

16 mm11/1619 mm

3/422 mm

7/81

28 mm1 1/8

30 mm1 1/41 3/8

35 mm1 1/21 9/1640 mm1 5/8

42 mm1 3/4

47 mm1 7/8

2

0.1950.2260.2740.2890.3700.4330.4950.5580.5580.6830.6880.7460.8260.8280.9440.9531.0781.1811.2031.2591.3281.4531.4561.5781.6411.6531.7031.7311.8281.9281.9532.097

0.1560.1870.2350.2490.3120.3740.4370.4980.4980.6230.6280.6860.7460.7480.8640.8730.9981.1001.1231.1791.2481.3731.3761.4981.5611.5731.6231.6521.7481.8481.8731.998

0.1950.2260.2740.2890.3700.4330.4950.5580.5580.6830.6880.7460.8260.8280.9440.9531.0781.1811.2031.2591.3281.4531.4561.5781.6411.6531.7031.7311.8281.9281.9532.097

0.0320.0320.0320.0320.0480.0480.0480.0480.0480.0480.0480.0480.0660.0660.0660.0660.0660.0660.0660.0660.0660.0660.0660.0660.0660.0660.0660.0660.0660.0660.0660.080

0.0390.0390.0390.0390.0580.0580.0580.0580.0580.0580.0580.0580.0780.0780.0780.0780.0780.0780.0780.0780.0780.0780.0780.0780.0780.0780.0780.0780.0780.0780.0780.098

2023304565

190230270810320250370420440550

12001300133014401400

8901040

820110011001000120012001200140013001100

0.1900.2190.2690.2830.3620.4240.4870.5490.5490.6740.6780.7370.8140.8160.9320.9411.0661.1681.1881.2471.3161.4411.4441.5661.6291.6411.6911.7201.8161.9161.9412.082

0.1920.2210.2700.2850.3640.4260.4890.5520.5520.6770.6820.7400.8170.8190.9350.9441.0691.1711.1921.2501.3201.4451.4481.5701.6331.6451.6951.7241.8201.9201.9452.087

0.1930.2240.2730.2870.3680.4300.4920.5550.5550.6800.6850.7430.8230.8250.9410.9501.0751.1771.1991.2561.3241.4491.4521.5741.6371.6491.6991.7271.8241.9241.9492.092

dnominal

d(in)

w2(in)

PARTNUMBER

d min(in)

D max(in)

RADIALCAPACITY

(lbs)

DIAMETRAL2

CLEARANCE

TYPICAL BOREFOR BEARING

MOUNT

1. See SIZE RANGE OF STANDARD RINGS chart on page 13 for other widths which are available. Radial load and torque capacities are generally proportional to width. Performance is influenced bydesign of mating components and assembly procedures - actual capacities may vary from the stated values. For sizes or load requirements other than shown, contact our Engineering Department forrecommendations.

2. Diametral clearance or Diametral Gap is the void where the Tolerance Ring fits (mathematically represented by D-d) The size of this gap determines the amount of interference fit. G1 and G2 aredesign limits.

3. Torque capacity is dependent on fit. Torque Capacity @ G1 is the expected torque capacity at the tightest fit allowable. TC is the expected minimum torque transfer capacity at the Typical Bore ForTorque diameter range (which occurs with Dmax).

AN4X8CAN018025CAN6X6CAN025025CAN031025CAN037025SAN043025SAN050025SAN050075SAN062025SAN16X5SAN068025SAN19X6SAN075025SAN22X7SAN087050SAN100050SAN28X12SAN112050SAN30X13SAN125050SAN137050SAN35X11SAN150050SAN156050SAN40X12SAN162050SAN42X13SAN175050SAN47X14SAN187050SAN200050S

G2(in)

G1(in)

D max(in)

D min(in)

D min(in)

D max(in)

TYPICAL BOREFOR TORQUE

3469

11212550

1507558

10098

115220325425525530640530650550795860835940890

1110136012401175

23447

151825753730506070

135200260325330390410500290420460445500475590720660675

TORQUECAPACITY

@ G13

(in-lbs)TC

(in-lbs)

d

W

dD

Freearrangement

Centeredarrangement

14

USATOLERANCE

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RINGS

Bearing & ANL Series

PARTNUMBER

BRG WW

(in)

BRG O.D.d

(in)BEARINGNUMBER

TYPICAL BOREFOR BEARING

MOUNT

R2R3R43435

38/608R6

60006001R8

62006201

6202/6300630162036302

6204/63036205/63046206/63056305W6207630662086307620962106308621163096212

31/25/8

16 mm19 mm22 mm

7/826 mm28 mm1-1/8

30 mm32 mm35 mm37 mm40 mm42 mm47 mm52 mm62 mm62 mm72 mm72 mm80 mm80 mm85 mm90 mm90 mm100 mm100 mm110 mm

00.50000.62500.62990.74800.86610.87501.02361.10241.12501.18111.25981.37801.45671.57481.65351.85042.04722.44092.44092.83462.83463.14963.14963.34653.54333.54333.93703.93704.3307

00.19600.19600.19690.23620.27560.25000.31500.31500.25000.35430.39370.43310.47240.47240.51180.55120.59060.62990.90550.66930.74800.70870.82680.74800.78740.90550.82680.98430.8661

30.5580.6830.6880.8260.9440.9531.1011.1811.2031.2591.3381.4561.5351.6531.7311.9282.1452.5382.5382.9132.9133.2273.2273.4253.6213.6214.0544.0154.409

00.5550.6800.6850.8230.9410.9501.0981.1771.1991.2561.3341.4521.5311.6491.7271.9242.1402.5332.5332.9102.9103.2243.2243.4223.6183.6184.0514.0124.406

1180250250420550580770840720980670820900

1000120014001600200036002900360032504000430045505350510065506525

RADIALCAPACITY

(lbs)PART

NUMBER

BRG WW

(in)

BRG O.D.d

(in)

TYPICAL BOREFOR BEARING

MOUNT

631062136311621462156312621663136217631462186315631663176318

110 mm120 mm120 mm125 mm130 mm130 mm140 mm140 mm150 mm150 mm160 mm160 mm170 mm180 mm190 mm

4.33074.72444.72444.92135.11815.11815.51185.51185.90555.90556.29926.29926.69297.08667.4803

1.06300.90551.14170.94490.98431.22051.02361.29921.10241.37801.18111.45671.53541.61421.6929

4.4094.8024.8024.9995.1965.1965.5905.5905.9835.9836.3776.3776.7707.1647.558

4.4064.7994.7994.9965.1935.1935.5875.5875.9805.9806.3746.3746.7675.1617.555

AN110X25S9AN120X22S9AN120X25S9AN125X22S9AN130X25S9AN130X31S9AN140X25S9AN140X33S9AN150X25S9AN150X33S9AN160X25S9AN160X33S9AN170X39S9AN180X39S9AN190X39S9

BEARINGNUMBER

2R3R434

2110435

608/38608/386203

31/25/8

16 mm11/1619 mm22 mm22 mm40 mm

000.50000.62500.62990.68750.74800.86610.86611.5748

20.19600.19600.19690.31250.23620.27560.27560.4724

00.5270.6520.6570.7160.7750.8920.8921.602

80.5250.6500.6550.7140.7730.8900.8901.600

71907190795074808550

105009200

122009950

130001055013950172501900020500

RADIALCAPACITY

(lbs)PART

NUMBER

BRG WW

(in)

BRG O.D.d

(in)BEARINGNUMBER

2688

1110132145

ANL RINGS

1. Recommended bore sizes assume no differential thermal expansion (going looser). Radial Capacity is astatic load rating.

2. USA Tolerance Rings may also be used to mount inner bearing races to shafts (BN series). Pleasecontact our engineers to review these applications since they usually involve cyclical loading rather thanstatic loads.

3. These part numbers are for “Free Arrangement” mounting configurations (REF p. 10). Assemblies usingnarrow, light-duty rings and a centered arrangement benefit from lighter assembly forces while stillpreventing bearing race rotation. Consult our Sales or Engineering Department for recommendations.

dNominal

AAN12.7X5SAN16X5SAN16X5SAN19X6SAN22X7SAN087025SAN26X8SAN28X8SAN112025SAN30X9SAN32X10SAN35X11SAN37X12SAN40X12SAN42X13SAN47X14SAN52X15SAN62X16SAN62X23S9AN72X17S9AN72X19S9AN80X17S9AN80X20S9AN85X19S9AN90X20S9AN90X22S9AN100X21S9AN100X25S9AN110X22S9

D min(in)

D max(in)

RADIALCAPACITY

(lbs)d

nominal D min(in)

D max(in)

D min(in)

D max(in)

TYPICAL BOREFOR BEARING

MOUNT

AANL12.7X5SANL16X5SANL16X5SANL17.5X8SANL19X6SANL22X7SANL22X10SANL40X12S

dnominal

dD

Freearrangement

15Check out our website! www.usatolerancerings.com

0.1500.1600.2000.2130.2560.2590.3200.3390.4170.4450.5080.5350.5700.6140.6320.6750.7130.8000.8620.9100.9251.0501.1071.1121.1751.3011.3041.4261.5011.5511.6761.926

BN Series

0.2500.2360.2360.2500.2500.1970.2500.2760.1970.2500.2500.2360.2500.4720.3750.5000.4720.5000.5000.4720.5000.5000.5120.8750.7500.6880.6690.7500.5511.0001.0001.000

0.1880.1970.2360.2500.3130.3150.3750.3940.4720.5000.5630.5910.6250.6690.6880.7500.7870.8750.9380.9841.0001.1251.1811.1881.2501.3751.3781.5001.5751.6251.7502.000

3/165 mm6 mm1/45/168 mm3/8

10 mm12 mm

1/29/16

15 mm5/8

17 mm11/163/4

20 mm7/8

15/1625 mm

11 1/8

30 mm1 3/161 1/41 3/8

35 mm1 1/2

40 mm1 5/81 3/4

2

0.1490.1590.1980.2110.2540.2570.3170.3360.4140.4420.5050.5320.5670.6110.6290.6720.7100.7970.8590.9070.9221.0471.1041.1091.1721.2971.3001.4221.4971.5471.6721.922

0.1490.1590.1980.2110.2540.2570.3170.3360.4140.4420.5050.5320.5670.6110.6290.6720.7100.7970.8590.9070.9221.0471.1041.1091.1721.2971.3001.4221.4971.5471.6721.922

0.1890.1980.2370.2510.3140.3160.3760.3950.4730.5010.5640.5920.6270.6710.6900.7520.7890.8770.9400.9861.0021.1271.1831.1901.2521.3771.3801.5021.5771.6271.7522.002

0.0320.0320.0320.0320.0480.0480.0480.0480.0480.0480.0480.0480.0480.0480.0480.0660.0660.0660.0660.0660.0660.0660.0660.0660.0660.0660.0660.0660.0660.0660.0660.066

0.0390.0390.0390.0390.0580.0580.0580.0580.0580.0580.0580.0580.0580.0580.0580.0780.0780.0780.0780.0780.0780.0780.0780.0780.0780.0780.0780.0780.0780.0780.0780.078

505085

10555

125190200200240240270300640510880840

100011251100120013001400250012001170122015001200220024002700

0.1530.1620.2010.2150.2620.2640.3230.3420.4200.4480.5110.5390.5730.6170.6360.6810.7180.8060.8690.9150.9311.0561.1121.1191.1811.3051.3081.4301.5051.5551.6801.931

0.1550.1640.2030.2170.2640.2660.3260.3450.4230.4510.5140.5420.5760.6200.6390.6840.7210.8090.8720.9180.9341.0591.1151.1221.1841.3091.3121.4341.5091.5591.6841.934

Dnominal

D(in)

W1

(in)PART

NUMBERd min(in)

D max(in)

DIAMETRAL2

CLEARANCE

TYPICAL O.D.FOR BEARING

MOUNT

TYPICAL O.D.FOR TORQUE

d max(in)

d min(in)

d max(in)

d min(in)

1.822485

121718212830389280

120110185245170245315340700450410415595450955

11151775

3347

119

21243137474975

185160200175300405275400515550

1150740770785

1120850

180021002900

TORQUECAPACITY

@ G13

(in-lbs)

RADIALCAPACITY

(lbs)

BN018025CBN5X6CBN6X6CBN025025CBN031025CBN8X5SBN037025SBN10X7SBN12X5SBN050025SBN056025SBN15X6SBN062025SBN17X12SBN068037SBN075050SBN20X12SBN087050SBN093050SBN25X12SBN100050SBN112050SBN30X13SBN118087SBN125075SBN137068SBN35X17SBN150075SBN40X14SBN162100SBN175100SBN200100S

G1(in)

G2(in)

1. See SIZE RANGE OF STANDARD RINGS chart on page 13 for other widths which are available. Radial load and torque capacities are generally proportional to width. Performanceis influenced by design of mating components and assembly procedures - actual capacities may vary from the stated values. For sizes or load requirements other than shown,contact our Engineering Department for recommendations.

2. Diametral clearance or Diametral Gap is the void where the Tolerance Ring fits (mathematically represented by D-d) The size of this gap determines the amount of interference fit.G1 and G2 are design limits.

3. Torque capacity is dependent on fit. Torque Capacity @ G1 is the expected torque capacity at the tightest fit allowable. TC is the expected minimum torque transfer capacity at theTypical Bore For Torque diameter range (which occurs with Dmax).

TC(in-lbs)

D

W

dD

Freearrangement

Centeredarrangement

16

USATOLERANCE

®

RINGS

NEW PROJECT INFORMATION SHEET

Date: Contact:

Company: Phone:

Address: Fax:

Description and Sketch of Current Application and Proposed Location of Tolerance Ring

Describe resons for considering Tolerance Rings.

USA Tolerance Ring to be mounted in Bore or on Shaft?

Describe Assembly Procedure.

Desired Performance

Torque: max. min.Axial force max. min.Radial force max. Cyclical load: _____Yes _____NoRadial runout max.Operating temperature max. min.

DimensionsShaft diameter(Inner) Tolerance: Wall thickness:Bore diameter (Outer) Tolerance: Wall thickness:Maximum width available for tolerance ring:Which dimensions can be changed?Which Mounting Configuration is preferred (Centered, Piloted, or Free?)

Material Of Mating ComponentsMaterial Hardness Coefficient of thermal expansion

Shaft(Inner Member)Housing (Outer Member)

Can materials be changed?

What Quality Standards are Required?

Estimated Annual Quantity?

Schedule: Competing SolutionsDesign to be Finalized by:Samples by:Production by:

Comments:

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Silicon Carbide Bushing and Sleeve in a Seal-less Chemical pump

USA Tolerance Ring in Ptu Heating/AC Unit

USATOLERANCE

®

RINGS

Housing grooved to accept ‘AN’ Style Tolerance Rings

Shaft grooved to accept ‘BN’ Style Tolerance Rings

‘AN’ Style Tolerance Ring

‘BN’ Style Tolerance Ring

HOUSING

SiC BUSHING

SiC SLEEVE

SiC BUSHING

SiC SLEEVE

SiC BUSHING

SiC SLEEVE

SiC BUSHING

SiC SLEEVE

Blower Wheel

Alternator Bearing Mount

Pulley on Shaft

Pump Bearing Mount

USA Tolerance Rings Mount Bearings

USATOLERANCE

®

RINGS

85 Route 31 North Pennington, New Jersey 08534

Toll Free: 1-877-865-7464Telephone: 609-745-5000

Fax: 609-745-5012www.usatolerancerings.com