(Example)
Catalog Numbers of stock gears are based on simple principles as follows. Please order gears by specifying their Catalog Numbers.
CP Racks & Pinions
CP Racks & Pinions
Catalog Number of Stock Gears
Feature IconsRoHS Compliant Product
Stainless Product
Re-machinableProduct
Resin Product
Finished ProductCopper AlloyProduct
Heat TreatedProduct
Injection Molded Product
Ground GearBlack Oxide coated Product
KSSCPGSGround Spur Pinion Shafts
CP5, 10 Page 408
CP
KTSCP Tapered Pinions
CP5, 10 Page 404
CPKSTRCPF • KSTRCPFD
Tapered Racks
CP5, 10 Page 404
CP
KSSCPG Ground Spur Gears
CP5~20 Page 408
CPKRGCP • KRGCPF • KRGCPD
Ground Racks
CP5, 10 Page 406
CP
KSRGCP • KSRGCPF • KSRGCPD Ground Racks
CP5~20 Page 410
CP
Series
KSSCP Steel Spur Gears
CP2.5~20 Page 412
CPKRCPF
Thermal Refined Racks
CP5, 10 Page 412
CP
KSRCP • KSRCPF • KSRCPFD Racks
CP2.5~20 Page 414
CP
KSROCP Round Racks
CP2.5~10 Page 418
CP
KSURCPF • KSURCPFD Stainless Steel Racks
CP5, 10 Page 416
CPKSUSCP
CP5, 10 Page 416
CP Stainless Steel Spur Gears
KFRCP Metal Flexible Racks
CP5 Page 418
CP
Pinions
S S CP 2.5 - 20 K
K
No. of teeth (20)
Circular pitch (2.5mm)
Type (Spur Gear)
Material (S45C)
Material TypeS S45C S Spur GearsSU SUS303, US304 TS Tapered Spur GearsK SCM440 Other Information
G Ground GearsS Pinion Shafts
Material Other InformationS S45C F Racks with Machined EndsK SCM440 D Racks with Bolt HolesSU SUS304 K Racks with Drill HolesF SS400 G Ground Racks
H Racks with induction hardened teethTypeR RacksRO Round RacksTR Tapered Racks
Racks
S R CP 5 - 100Total length (100mm)
Circular pitch (5mm)
Type (Rack)
Material (S45C)
Page 406
Hardened Ground Racks
Series
KRGCPF-H • KRGCPFD-H
CP5, 10
CP
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CP Racks & Pinions
KHK stock CP racks and pinions are suitable in applications where very accurate
positioning in linear motion is required. For your convenience, we offer circular pitches of 2.5 to 20 mm and in lengths of 100 to 2000 mm. (FRCP is available to
4000 mm)
Characteristics
About CP Racks & PinionsThe reference pitch of a metric module is computed by multiplying the
number of module by π (3.14159). For example, the reference pitch of
m 3 rack is 9.425 mm (3×π). When using a rack and a pinion in a linear
motion application, the fact that the pitch is not an integral number pres-ents a difficulty in accurate positioning. This problem is solved by CP
racks and pinions where one rotation of a pinion moves it precisely 50, 100, 150, ... or 600 mm. The following table lists the main features. The following table lists the main features.
[NOTE 1] The catalog numbers in the above tables with a suffix of F have both ends machined so that they can be butted against each other to make any desired length. The items with (D) have mounting screw holes for easier assembly.
Racks
Pinions
• For safer handling and to prevent damage such as deformation, KHK stock CP racks have round chamfering on the corners of the top land of the gear tooth. This rounded chamfered shape is patented by KHK. Because it is effective for reducing noise, all of KHK CP racks have this chamfering treatment.
• Black colored products are KHK stock gears that have an applied black oxide coating for rust resistance; this ‘blackness’ is a product characteristic of KHK stock gears.
Movement of one cycle of the CP10-30 pinion on a CP rack vs.SS3-30 (m3) on a m3 rack.
Difference between CP10 and m3
One half turn
One turn
Pitch
Catalog No.
Note 1Pitch (mm)
Total Length (mm)
( ) No. of teethMaterial Heat
Treatment
ToothSurface Finish
Precision KHK R 001( ) denotes
JIS B 1702-1
Features
KSTRCPF • KSTRCPFD
5, 0 1000 S45C — Cut 4By pairing with KKTSCP pinion, the backlash may be adjusted.
KKRGCPF - HKKRGCPFD - H 5, 0 500, 1000 SCM440
Thermal refined, teeth induction hardened
Cut 1Heat treated ground gears with high precision and strength has excellent cost-performance ratio. J Series products are also available.
KKRGCP • KKRGCPF • KKRGCPD
5, 0100, 500, 1000
SCM440Thermal Refined
Ground 1High strength and abrasion-resistant for precision linear motion.
KSRGCP • KSRGCPF • KSRGCPFD
5, 0, 15, 20
100, 500,1000
S45C Gear teeth induction hardened Ground 3
Reasonably priced ground racks with abrasion-resistant characteristics. J Series products are also available.
KKRCPF 5, 0 1000 SCM440Thermal Refined
Cut 4Increased strength with SCM440 material which is thermal refined.
KSRCP • KSRCPF • KSRCPFD
2.5, 5, 10, 5, 20
100, 500, 000, 500, 2000
S45C — Cut 4Widely applicable due to low cost and large selection of pitches and lengths.
KSURCPF • KSURCPFD 5, 0 500, 000 SUS304 Solution treated Cut 5
Suitable for food machinery due to SUS304 material’s rust-resistant quality.
KSROCP 2.5, 5, 0 500 S45C — Cut 4Convenient in applications where the rack has reciprocal motion.
KFRCP 52000, 3000, 4000
SS400 — Cut 8Cut continuously. Long length and bendable to a contour.
KKTSCP 5, 0 (20~40) SCM440 Thermal refined Cut (N8)By pairing with KSTRCPF rack, the backlash may be adjusted.
KSSCPGS 5, 0 (10~25) S45CThermal refined, teeth induction hardened
Ground (N7)Ground Spur Gears with Pinions, can be directly assembled with the shaft bearing, by modifying the pinion.
KSSCPG 5, 0, 15, 20
(20~40) S45CGear teeth induction hardened
Ground (N7)Perform secondary operations to suit your require-ment on these ground CP spur gears.
KSSCP 2.5, 5, 10, 5, 20
(20~40) S45C — Cut (N8)Low cost and widely applicable, with a large selec-tion of pitches and numbers of teeth.
KSUSCP 5, 0 (20~30) SUS303 — Cut (N8)Suitable for food machinery due to SUS303 mate-rial's rust-resistant quality.
400
KHK Technical Information
Please select the most suitable products by carefully considering the characteristics of items and contents of the product tables. It is also important
to read all applicable notes before the final selection.
Selection Hints
1. Caution in Selecting the Mating Gears
Catalog No.
Item
KKRGCPF-HKKRGCPFD-H
KKRGCPKKRGCPFKKRGCPD
KKRCPF
KSRGCPKSRGCPF
KSRGCPFD
KSRCP • KSRCPFKSRCPFDKSROCPKSTRCPF
KSTRCPFD
KSURCPFKSURCPFD
KFRCPKSSCPGS KSSCPG KKTSCP KSSCP KSUSCP
Formula NOTE 1 Formula of spur and helical gears on bending strength (JGMA401-01)
No. of teeth of mating gear 30 Same number of teeth
Rotation 100rpm
Durability Over 107cycles
Impact from motor Uniform load
Impact from load Uniform load
Direction of load Bidirectional
Allowable bending stress at root σ Flim (kgf/mm2) NOTE 2 32 32 20 20 10.5 24.5 19 28.5 19 10.5
Safety factor SF 1.2
Formula NOTE 1 Formula of spur and helical gears on surface durability (JGMA402-01)
Kinematic viscosity of lubricant 100cSt (50°C)
Gear support Support on one end
Allowable Hertz stress σHlim (kgf/mm2) 112 79 90 52.5 41.3 99 90 74.5 49 41.3
Safety factor SH 1.15
Calculation assumptions for Bending Strength
Calculation assumptions for Surface Durability (Except those in common with bending strength)
[NOTE 1] The gear strength formula is based on JGMA (Japanese Gear Manufactures Association) specifications. The units for the number of rotations (rpm) and the stress (kgf/mm2) are adjusted to the units needed in the formula.
[NOTE 2] The allowable bending stress at the root σ Flim is calculated from JGMA401-01, and set to 2/3 of the value in the consideration of the use of planetary-, idler-, or other gear systems, loaded in both directions.
2. Caution in Selecting Gears Based on Gear Strength
Racks Pinions
Definition of bending strength by
JGMA 401-01(1974)
The allowable bending strength of a gear is defined as the allowable tan-gential force at the pitch circle based on the mutually allowable root stress of two meshing gears under load. Example of the failure due to insuf-
ficient bending strength.
Definition of surface durability by JGMA 402-01(1975)
The surface durability of a gear is de-fined as the allowable tangential force at the pitch circle, which permits the force to be transmitted safely without incurring surface failure. Example of the defacement due to
insufficient surface durability.
The precision standards of KHK stock racks are established by us.
Please be sure to see the pages below when selecting.
3. Selecting Racks By Precision
a Pitch Error of Racks NOTE 2 (KKHKR001) → page 374b Precision of Rack Blanks NOTE 2 → page 375c Backlash of Rack Tooth → page 375
[NOTE 2] Convert CP to m (module) when reference is made to the data in the table. (m=CP/π)
a KHK stock CP racks are mated with CP spur gears having the same pitch. Since CP2.5 (m0.796), CP5 (m1.592) and CP10 (m3.183) are very close in size to m0.8, m1.5 and m3 respectively, the selecting the proper mating gear should be verified to make sure that the items are correct. Otherwise, complications could arise.
b KSTRCPF and KSTRCPFD Tapered Racks are mated with KKTSCP Spur Gears having the same pitch. They can also be mated with other spur gears, however, they can not be used as parallel axis gears due to the setting angles.
The gear strength values shown in the product pages were computed
by assuming a certain application environment. Therefore, they should be used as reference only. We recommend that each user computes
his own values by applying the actual usage conditions. The table be-
low contains the assumptions established for these products in order
to compute gear strengths.
401
a KHK stock CP racks are designed to give the proper backlash when
assembled using the mounting distance given by the formula below
(mounting distance tolerance of H7 to H8 required). The backlash val-
ues are given in the table on page 375. Make sure that the mounting
distance stays constant for the length of the rack.
b KKRGCP type of KHK stock ground racks have four surfaces ground
parallel to within 10~15μm. To maintain true angle, they should be mounted on high precision bases as shown below. It is even possible
to correct for the angular errors of racks by compensating the mount-
ing base. With recent increases in the requirement for zero backlash
linear drives, such accurate assembly as shown is becoming more important.
c If the racks are not secured properly to the base, they could shift dur-ing operation and cause unexpected problems. It is very important to
insure firm mounting by the use of dowel pins or similar devices.d Machined end type racks such as KSRCPF and KSRCPFD series
have the pitch tolerance of— 0.1/— 0.3 for modules less than Module
2.5, and — 0.1/— 0.4 for larger modules. If you try to connect the racks
without any space, the pitch at the connection will be too small and will cause problems. Please follow the following diagrams for assembly.
a Secondary operations can be performed on all KHK stock CP racks
except for the racks where the gear teeth are induction hardened. To
avoid problems of gear precision, do not reduce the face width. The precision of ground racks and racks with mounting holes may drop if
you do not exercise extreme caution during installation or while modi-
fying.b Pitch lines of racks are controlled by using the bottom surface as the
reference datum and over-pin measurements on tooth thickness. If
you machine the bottom surfaces, the precision of the racks may be affected.
c When connecting two racks, the machining of the mating ends re-quires careful consideration. The meshing will be poor if the pitch (CP)
straddling the connection has a positive tolerance. We recommend a
minus tolerance on pitch of at the connection. The below is an indica-
tion of pitch tolerance for each module.
d To use dowel pins to secure racks, attach the racks to the base and drill both simultaneously.
e KHK stock CP racks made of S45C and SCM440 (except for ground
racks) can be induction hardened. However, the precision of pitch is decreased.
f To be able to handle parts safely, all burrs and sharp corners should be removed after the secondary operations are done.
g If you are going to modify the gear by gripping the teeth, please ex-ercise caution not to crush the teeth by applying too much pressure.
Any scarring will cause noise during operation.
QTC METRIC GEARS
PHONE: (516)437-6700 FAX: (516) 328-3343
E-mail: [email protected]
Application Hints
1. Caution on Performing Secondary Operations
2. Points of Caution in Assembling
CP Racks & Pinions
Mounting distance a = Height of pitch line of rack + Pitch radius of pinion
[CAUTION]
Pinions are assumed to be stan-dard stock spur gears (x=0).
An example of Rack Joining, we recommend the following method.
[CAUTION] Joining gauge racks for helical racks must have the opposite hand from the racks. Please use Module 1~10 100 racks as a joining gauge rack, or alternatively the rack of the same specifications on hand.
d
Pinion
Rack
Joining gauge rack
CP CP Tolerance
CP2.5 -0.05-0.25
CP5 -0.1-0.3
CP10-0.1-0.4CP15
CP20
Unit : mmCP
In order to use KHK stock gears safely, carefully read the Application Hints before proceeding.
If there are questions or if you require clarifications, please contact our technical department or your nearest distributor.
402
4°
Tapered Pinion
Tapered Rack
Tapered Racks and PinionsKSTRCPF • KSTRCPFD & KKTSCP
Features of Tapered Racks and Pinions
Examples of special applications of Tapered Rack & Pinions
Tapered Pinion
Tapered Rack Tapered Rack Tapered Rack
Tapered Pinion Spur Gear
8° 4°
Example of Comparison
Moving the pinion axially by 1 mm changes the backlash by 0.05 mm.
• KSRCP5-1000 and KSSCP5-30 combination produces a backlash value of 0.1 to 0.26.• KSTRCPF5-1000 and KKTSCP5-30 combination produces a backlash value of 0.05
or less. (Target value)
♦ Note above backlash values are theoretical values when meshed under ideal conditions.
♦ Tapered racks and pinions are not interchangeable with KHK stock CP racks and pinions.
♦ Different modules, number of teeth, ground gear versions and custom-made items are
available as special orders.
The shaft angle illustrated below can be obtained by changing the assembly orientation of the tapered spur gear or by mating with a regular spur gear.
When mating a tapered rack and a tapered pin-ion, where each hub is set in opposite directions, a 0° shaft angle is obtained. (Axis Parallel).
When mating a tapered rack and a tapered pinion, where each hub is set in the same di-rection, an 8° shaft angle is obtained.
When mating a tapered rack and a spur gear, a 4° shaft angle is obtained.
1. Easy adjustment of Backlash value
Generally, adjustment of backlash value is made by changing mounting distance (adjusting the height of the motor shaft). The backlash of KHK stock tapered racks and pinions are ad-
justable only by moving the pinion axially.
2. Reasonable Prices
The precision of KHK stock tapered racks and pinions are obtained by rationalization in the
production process with our cutting-edge technologies. This enables us to offer quality tapered
racks and pinions in the same price range as the CP racks and pinions. (KSRCPF and KSSC).
Information
KGCU-R Rack Kit
Use of racks enables the conversion of rotation motion to linear motion. Applications include devices that provide lift.
Installment : Parallel axes gears Gear Type : Racks & Pinions Gears : KSRO1.5-500 KPS1.5-20 Weight : Approx. 1kg
Very smooth!
R Chamfered
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Tapered PinionsCircular Pitch 5, 0KKTSCP
DCBAD’
4°
J
G
HE F
I
ST
Tapered RacksCircular Pitch 5, 0KSTRCPF • KSTRCPFD
Specifications
Precision gradeJIS grade N8 (JIS B1702-1: 1998)JIS grade 4 (JIS B1702: 1976)
Gear teeth Standard full depth
Pressure angle 20°
Material SCM440
Heat treatment Thermal refining only
Tooth hardness 225~285HB
Catalog No. Pitch mm(Module)
No. of teeth ShapeTotal length Face width Height (major)Height (minor) Height to pitch line Reference position Mounting hole dimensions No. of
mounting holes
Mounting screw sizeA B C C' D E F G H
KSTRCPFD5-1000KSTRCPFD10-1000
CP5 (1.5915)CP10 (3.1831)
200100
RDRD
10001000
1530
19.534.5
18.4532.4
17.3830.27
7.515
814
5050
180180
66
M5M10
ACP CP
C’ CD
BE
4°
RF
Catalog No. Pitch mm(Module)
No. of teeth ShapeTotal length Face width Height (major) Height (minor) Height to pitch line Reference position
A B C C' D E
KSTRCPF5-1000KSTRCPF10-1000
CP5 (1.5915)CP10 (3.1831)
200100
RFRF
10001000
1530
19.534.5
18.4532.4
17.3830.27
7.515
Catalog No. Pitch mm(Module)
No. of teeth ShapeBore Hub dia. Pitch dia. Outside dia. (major) Outside dia. (minor) Face width Hub width Total length
AH7 B C D D' E F G
KTSCP5-20KTSCP5-25KTSCP5-30KTSCP5-40
CP5 (1.5915)
20253040
ST
8101012
25323845
31.8339.7947.7563.66
36.0644.0251.9867.89
33.9741.9249.8865.8
18 15 33
KTSCP10-20KTSCP10-25KTSCP10-30KTSCP10-40
CP10 (3.1831)
20253040
ST
15202020
50607580
63.6679.5895.49
127.32
72.1388.04
103.96135.79
67.9383.8599.76
131.59
36 20 56
CP
CP
[Caution on Product Characteristics] a The allowable torques shown in the table are the calculated values according to the assumed usage conditions. Please see page 401 for more details.
b The backlash values shown in the table are the theoretical values when these gears and KSTRCP Tapered Racks are in mesh.
[Caution on Product Characteristics] a The allowable forces shown in the table are the calculated values according to the assumed usage conditions. Please see page 401 for more details.
b The backlash of the CP Tapered Racks equates to the value of the mating gear shown in the table.c After attaching the racks to the base, please fasten with dowel pins. Clamping only with mounting screws could possibly
cause the screws to be broken, due to a heavy load.
Catalog No. Pitch mm(Module)
No. of teeth
ShapeBore Hub dia. Pitch dia. Outside dia. (major) Outside dia. (minor) Face width Hub width Total length
AH7 B C D D' E F G
KKTSCP5-20KKTSCP5-25KKTSCP5-30KKTSCP5-40
CP5 (1.5915)
20253040
ST
8101012
25323845
31.8339.7947.7563.66
36.0644.0251.9867.89
33.9741.9249.8865.8
18 15 33
KKTSCP10-20KKTSCP10-25KKTSCP10-30KKTSCP10-40
CP10 (3.1831)
20253040
ST
15202020
50607580
63.6679.5895.49
127.32
72.1388.04
103.96135.79
67.9383.8599.76
131.59
36 20 56
Specifications
Precision grade KHK R 001 grade 4
Gear teeth Standard full depth
Pressure angle 20°
Material S45C
Heat treatment Stress relief annealing
Tooth hardness (less than 95HRB)
For products not categorized in our Stock Gear series', custom gear production services with short lead times is available. For details see page VI.
*Please see book one for additional products in these modules.
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For updated information, please visit qtcgears.com. 405
Counterbore dimensions Allowable force (N) Allowable force (kgf) Weight
(kg)Catalog No.
H I J Bending strength Surface durability Bending strength Surface durability
610.8
1017.5
611
22909150
4681870
233933
47.7191
2.016.92
KSTRCPFD5-1000KSTRCPFD10-1000
A
4°
H H HHHG (G)CP CP
C’ J K CDF
B
I E
RD
Allowable force (N) Allowable force (kgf) Weight
(kg)Catalog No.
Bending strength Surface durability Bending strength Surface durability
22909150
468 1870
233 933
47.7 191
2.057.13
KSTRCPF5-1000KSTRCPF10-1000
Reference face width Adjustable width Reference position Distan ce traveledin one turn (mm)
Allowable torque (N·m) Allowable torque (kgf·m) Backlash
(mm)
Weight
(kg)Catalog No.
H I J Bending strength Surface durability Bending strength Surface durability
15 3 10.5
100125150200
41.2 55.6 70.3
100
8.13 14.0 21.9 43.3
4.20 5.67 7.16
10.2
0.83 1.43 2.23 4.41
0~0.110~0.110~0.110~0.11
0.160.250.370.61
KKTSCP5-20KKTSCP5-25KKTSCP5-30KKTSCP5-40
30 6 21
200250300400
329 445 562 801
71.2 122 189 371
33.6 45.3 57.3 81.7
7.26 12.4 19.2 37.8
0~0.120~0.120~0.120~0.12
1.131.712.584.25
KKTSCP10-20KKTSCP10-25KKTSCP10-30KKTSCP10-40
[Caution on Secondary Operations] a Please read “Caution on Performing Secondary Operations” (Page 402) when performing modifications and/or secondary operations for safety concerns.
b Avoid performing secondary operations that narrow the tooth width as it affects precision and strength.
[Caution on Secondary Operations] a Please read “Caution on Performing Secondary Operations” (Page 402) when performing modifications and/or secondary operations for safety concerns.
b If gear tooth hardening, or thermal refining, is applied, the decarburization layer (approx. 0.5 mm thickness) on the rectangu-lar surfaces cannot have the hardness you designate.
c Avoid hardening Racks with bolt holes, due to deformation occurring at the mounting hole and the difficulty of straightening the rack after hardening.
KSTRCPFD
Tapered Spur Gears
KKTSCP
Tapered Racks
KSTRCPF • KSTRCPFD
*Please see book one for additional products in these modules.
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Thermal Refined Ground RacksCircular Pitch 5, 0KKRGCP • KKRGCPF • KKRGCPD
Specifications
Precision grade KHK R 001 grade 1
Gear teeth Standard full depth
Pressure angle 20°
Material SCM440
Heat treatment Thermal refining only
Tooth hardness 250~285HB
Catalog No. Pitch mm(Module)
No. of teeth
ShapeTotal length Face width Height Height to pitch line Mounting hole dimensions No. of
mounting holes
Mountingscrew sizeA B C D E F G
KKRGCPD5-500KKRGCPD10-500
CP5 (1.5915)CP10 (3.1831)
10050
RDRD
500500
1530
2035
18.4131.82
814
4040
140140
44
M5M10
SW G G
G
G GSWA B
CD
R1
CP
Catalog No. Pitch mm(Module)
No. of teeth
ShapeTotal length Face width Height Height to pitch line Allowable force (N) Allowable force (kgf) Weight
(kg)A B C D Bending strength Surface durability Bending strength Surface durability
KRGCPF5-1000KRGCPF10-1000
CP5 (1.5915)CP10 (3.1831)
200100
RFRF
10001000
1530
2035
18.4131.82
366014600
15606230
3731490
159635
2.177.49
Catalog No. Pitch mm(Module)
Effectiveno. of teeth
ShapeTotal length Face width Height Height to pitch line Allowable force (N) Allowable force (kgf) Weight
(kg)A B C D Bending strength Surface durability Bending strength Surface durability
KKRGCP5-100KKRGCP5-500
CP5 (1.5915)
1899 R1 98
505 15 20 18.41 3660 1560 373 159 0.211.09
KKRGCP10-100KKRGCP10-500
CP10 (3.1831)
849 R1 98
505 30 35 31.82 14600 6230 1490 635 0.733.78
*SW Saw Blade Finished
Catalog No. Pitch mm(Module)
Effectiveno. of teeth
ShapeTotal length Face width Height Height to pitch line Allowable force (N) Allowable force (kgf) Weight
(kg)A B C D Bending strength Surface durability Bending strength Surface durability
KKRGCPF5-500HKKRGCPF5-1000H CP5 (1.5915) 100
200RFRF
5001000 15 20 18.41 3660 2270 373 232 1.08
2.17KKRGCPF10-500HKKRGCPF10-1000H CP10 (3.1831) 50
100RFRF
5001000 30 35 31.82 14600 9150 1490 933 3.75
7.49
Circular Pitch 5, 10
Specifications
Precision grade KHK R 001 grade 1
Gear teeth Standard full depth
Pressure angle 20°
Material SCM440
Heat treatment Thermal refined, teeth induction hardened
Tooth hardness 50~60HRC
B
CD
A
CP CPG G
G
G G
RF
Catalog No.• : J Series (Available-on-request)
Pitch mm(Module)
No. of teeth
ShapeTotal length Face width Height Height to pitch line Mounting hole dimensions No. of
mounting holes
Mountingscrew sizeA B C D E F G
•KKRGCPFD5-500HJ•KKRGCPFD5-1000HJ CP5 (1.5915) 100
200RDRD
5001000 15 20 18.41 8 25
50150180
46
M5
•KKRGCPFD10-500HJ•KKRGCPFD10-1000HJ CP10 (3.1831) 50
100RDRD
5001000 30 35 31.82 14 25
50150180
46
M10
KKRGCPF - H • KKRGCPFD-H
Hardened Ground RacksCP
* The precision grade of J Series products is equivalent to the value shown in the table.
Standard tooth surface induction hardening is applied resulting in reasonably priced racks which have their surface durability increased by 50% than KRGCPF !*
From improvements in our manufacturing processes, overall pricing is reduced by 20%! C-chamfering is widened for convenience in installation.*
*Please see book one for additional products in these modules.
*Please see book one for additional products in these modules.
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For updated information, please visit qtcgears.com. 407
[Caution on Product Characteristics] a The allowable forces shown in the table are the calculated values according to the assumed usage conditions. Please see page 401 for more details.b Backlash of racks vary depending on mating pinions. Please calculate the backlash in accordance with the backlash of the mating pinion and values in the table
"Backlash of Rack Tooth (Amount of Tooth-Thinning)" (Page 375).c After attaching the racks to the base, please fasten with dowel pins. Clamping only with mounting screws could possibly cause the screws to be broken, due to a
heavy load.
Counterbore dimensions Allowable force (N) Allowable force (kgf) Weight
(kg)Catalog No.
H I J Bending strength Surface durability Bending strength Surface durability
610.8
1017.5
611
366014600
15606230
373 1490
159 635
1.06 3.61
KKRGCPD5-500KKRGCPD10-500
B
CD
A
CP CPG G
G
G G
RF
A
C
BG GGF (F)H
EDI J
CP CPG G
G
G G
RD
[Caution on Secondary Operations] a Please read “Caution on Performing Secondary Operations” (Page 402) when performing modifications and/or secondary operations for safety concerns.
KKRGCPD Ground RacksCP
KKRGCP • KKRGCPF • KKRGCPD
Ground RacksCP
KRGCPF-H • KRGCPFD-H
A
C
BG GGF (F)H
EDI J
CP CPG G
G
G G
RD
Counterbore dimensions Allowable force (N) Allowable force (kgf) Weight
(kg)Catalog No.
H I J Bending strength Surface durability Bending strength Surface durability
6 10 6 3660 2270 373 232 1.062.13
•KKRGCPFD5-500HJ•KKRGCPFD5-1000HJ
10.8 17.5 11 14600 9150 1490 933 3.617.28
•KKRGCPFD10-500HJ•KKRGCPFD10-1000HJ
[Caution on Product Characteristics] a The allowable forces shown in the table are the calculated values according to the assumed usage conditions. Please see page 401 for more details.b Backlash of racks vary depending on mating pinions. Please calculate the backlash in accordance with the backlash of the mating pinion and values in the table
"Backlash of Rack Tooth (Amount of Tooth-Thinning)" (Page 375).
[Caution on Secondary Operations] a Please read “Caution on Performing Secondary Operations” (Page 402) when performing modifications and/or secondary operations for safety concerns.
b Due to the gear teeth being induction hardened, no secondary operations can be performed on tooth areas including the bottom land (approx. 1 mm to 2 mm). Please use wire EDM or other carbide tools to modify the length.
[Caution on J series] a As available-on-request products, requires a lead-time for shipping within 5 working-days (excludes the day ordered), after placing an order. Please allow additional shipping time to get to your local distributor.
b Number of products we can process for one order is 1 to 20 units. For quantities of 21 or more pieces, we need to quote price and lead time.
c No black oxide is re-applied after adding secondary operation of mounting holes.
Series
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Ground Spur Pinion ShaftsCircular Pitch 5, 0KSSCPGS
A’CD
F’
20 20
G
A
E F
G G G
S7
Specifications
Precision gradeJIS grade N7 (JIS B1702-1: 1998)JIS grade 3 (JIS B1702: 1976)
Gear teeth Standard full depth
Pressure angle 20°
Material S45C
Heat treatment Thermal refinined, tooth surfaceinduction hardeded
Tooth hardness 50~60HRC
Ground Spur GearsCircular Pitch 5, 0, 5, 20KSSCPG
G
A B C D
E F
G
S1
CP
CP
Catalog No. Pitch mm(Module)
No. of teeth
Profile shift coefficient
ShapeShaft dia. (L) Shaft length (L) Pitch dia. Outside dia. Face width Shaft dia. (R) Shaft length (R)
A' F' C D E A F
KSSCPGS5-15KSSCPGS5-20KSSCPGS5-25
CP5 (1.5915)152025
000
S719.227.230.2
2523.8731.8339.79
27.0635.0142.97
1519.227.230.2
100
KSSCPGS10-10KSSCPGS10-15KSSCPGS10-20
CP10 (3.1831)101520
+0.500
S725.235.240.2
4031.8347.7563.66
41.0554.1170.03
3025.235.240.2
150
Catalog No. Pitch mm(Module)
No. of teeth
ShapeBore Hub dia. Pitch dia. Outside dia. Face width Hub width Total length
AH7 B C D E F G
KSSCPG5-20KSSCPG5-25KSSCPG5-30KSSCPG5-40
CP5 (1.5915)
20253040
S1
8101012
25323850
31.8339.7947.7563.66
35.0142.9750.9366.85
15 15 30
KSSCPG10-20KSSCPG10-25KSSCPG10-30KSSCPG10-40
CP10 (3.1831)
20253040
S1
15202025
50607580
63.6679.5895.49
127.32
70.0385.94
101.86133.69
30 20 50
KSSCPG15-20KSSCPG15-25KSSCPG15-30
CP15 (4.7746)202530
S1252525
75100110
95.49119.37143.24
105.04128.92152.79
50 27 77
KSSCPG20-20KSSCPG20-25KSSCPG20-30
CP20 (6.3662)202530
S1253030
100130150
127.32159.15190.99
140.06171.89203.72
60 30 90
[Caution on Product Characteristics] a The allowable torques shown in the table are the calculated values according to the assumed usage conditions. Please see page 401 for more details.
b The backlash values shown in the table are the theoretical values when these gears and KSRGCP Racks are in mesh.c To find the center distance of profile shifted spur gears, please see the appropriate section on page 51 – 52.
[Caution on Product Characteristics] a The allowable torques shown in the table are the calculated values according to the assumed usage conditions. Please see page 401 for more details.
b The backlash values shown in the table are the theoretical values when these gears and KSRGCP Racks are in mesh.
Specifications
Precision gradeJIS grade N7 (JIS B1702-1: 1998)JIS grade 3 (JIS B1702: 1976)
Gear teeth Standard full depth
Pressure angle 20°
Material S45C
Heat treatment Tooth surface induction hardeded
Tooth hardness 50~60HRC
*Please see book one for additional products in these modules.
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For updated information, please visit qtcgears.com. 409
Total length Distance traveled
in one turn (mm)
Allowable torque (N·m) Allowable torque (kgf·m) Backlash
(mm)
Weight
(kg)Catalog No.
G Bending strength Surface durability Bending strength Surface durability
14075
100125
21.2 32.0 43.2
8.49 16.6 27.8
2.16 3.26 4.40
0.87 1.70 2.83
0.04~0.180.04~0.180.04~0.18
0.340.660.85
KSSCPGS5-15KSSCPGS5-20KSSCPGS5-25
220100150200
121 169 256
25.9 67.9
133
12.4 17.3 26.1
2.64 6.93
13.6
0.05~0.200.05~0.200.06~0.21
0.971.872.64
KSSCPGS10-10KSSCPGS10-15KSSCPGS10-20
Distance traveled
in one turn (mm)
Allowable torque (N·m) Allowable torque (kgf·m) Backlash
(mm)
Weight
(kg)Catalog No.
Bending strength Surface durability Bending strength Surface durability
100125150200
24.8 33.5 42.3 60.4
13.7 23.0 35.0 66.9
2.53 3.41 4.32 6.16
1.40 2.34 3.57 6.82
0.04~0.180.04~0.180.04~0.180.05~0.19
0.140.220.330.58
KSSCPG5-20KSSCPG5-25KSSCPG5-30KSSCPG5-40
200250300400
198 268 339 483
110 184 280 535
20.2 27.3 34.5 49.3
11.2 18.7 28.5 54.6
0.06~0.210.06~0.210.06~0.210.07~0.22
0.991.492.263.59
KSSCPG10-20KSSCPG10-25KSSCPG10-30KSSCPG10-40
300375450
744 1005 1270
399 667
1020
75.9 102 130
40.7 68.0
104
0.07~0.230.09~0.250.09~0.25
3.455.768.04
KSSCPG15-20KSSCPG15-25KSSCPG15-30
400500600
159021402710
880 14702240
162 219 276
89.7 150 228
0.09~0.250.09~0.250.09~0.25
7.50 12.0 17.2
KSSCPG20-20KSSCPG20-25KSSCPG20-30
[Caution on Secondary Operations] a Please read “Caution on Performing Secondary Operations” (Page 402) when performing modifications and/or secondary op-erations for safety concerns.
b Due to the gear teeth being induction hardened, no secondary operations can be performed on tooth areas including the bottom land (approx. 1 to 2 mm). Use carbide tools for the modification of the shaft area near the bottom land.
[Caution on Secondary Operations] a Please read “Caution on Performing Secondary Operations” (Page 402) when performing modifications and/or secondary operations for safety concerns. b Due to the gear teeth being induction hardened, no secondary operations can be performed on tooth areas including the bottom land (approx. 1 to 2 mm).
Ground Spur Pinion ShaftsCP
KSSCPGS
Ground Spur GearsCP
KSSCPG
For products not categorized in our Stock Gear series', custom gear production services with short lead times is available. For details see page VI.
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410
Hardened Ground RacksCircular Pitch 5, 0, 5, 20
Specifications
Precision grade KHK R 001 grade 3 *
Gear teeth Standard full depth
Pressure angle 20°
Material S45C
Heat treatment Tooth surface induction hardeded
Tooth hardness 50~60HRC*
CP
*SW Saw Blade Finished
*Due to the decarburization layer of about 0.5 mm thickness, the rectangular surface have less than HB187 hardness.
KSRGCP • KSRGCPF • KSRGCPFD
B
CD
ACP CP
G
SW SW
A B
CD
G
R1
RF
Catalog No. Pitch mm(Module)
Effectiveno. of teeth
ShapeTotal length Face width Height Height to pitch line Allowable force (N) Allowable force (kgf) Weight
(kg)A B C D Bending strength Surface durability Bending strength Surface durability
KSRGCP5-100KSRGCP10-100KSRGCP15-100KSRGCP20-100
CP5 (1.5915)CP10 (3.1831)CP15 (4.7746)CP20 (6.3662)
18853
R1R1R1R1
9898
10398
15305060
20355060
18.4131.8245.2353.63
22909150
2290036600
14605860
1420023400
233 933
23303730
149 597
14502390
0.210.731.832.48
Catalog No. Pitch mm(Module)
No. of teeth
ShapeTotal length Face width Height Height to pitch line Allowable force (N) Allowable force (kgf) Weight
(kg)A B C D Bending strength Surface durability Bending strength Surface durability
KSRGCPF5-500KSRGCPF5-1000 CP5 (1.5915) 100
200 RF 5001000 15 20 18.41 2290 1460 233 149 1.08
2.17KSRGCPF10-500KSRGCPF10-1000 CP10 (3.1831) 50
100 RF 5001000 30 35 31.82 9150 5860 933 597 3.75
7.49 KSRGCPF15-500KSRGCPF15-1000 CP15 (4.7746) 33
67 RF 4951005 50 50 45.23 22900 14200 2330 1450 8.79
17.8KSRGCPF20-500KSRGCPF20-1000 CP20 (6.3662) 25
50 RF 5001000 60 60 53.63 36600 23400 3730 2390 12.6
25.3
Catalog No.
• : J Series (Available-on-request)Pitch mm(Module)
No. of teeth
ShapeTotal length Face width Height Height to pitch line Mounting hole dimensions No. of
mounting holes
Mountingscrew sizeA B C D E F G
•KSRGCPFD5-500J•KSRGCPFD5-1000J CP5 (1.5915) 100
200 RD 5001000 15 20 18.41 8 25
50150180
46 M5
•KSRGCPFD10-500J•KSRGCPFD10-1000J CP10 (3.1831) 50
100 RD 5001000 30 35 31.82 14 25
50150180
46 M10
•KSRGCPFD15-500J•KSRGCPFD15-1000J CP15 (4.7746) 33
67 RD 4951005 50 50 45.23 20 27.5
62.5220220
35 M14
•KSRGCPFD20-500J•KSRGCPFD20-1000J CP20 (6.3662) 25
50 RD 5001000 60 60 53.63 23 30
60220220
35 M16
* The precision grade of J Series products is equivalent to the value shown in the table.
For products not categorized in our Stock Gear series', custom gear production services with short lead times is available. For details see page VI.
*Please see book one for additional products in these modules.
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For updated information, please visit qtcgears.com. 411
[Caution on Product Characteristics] a The allowable forces shown in the table are the calculated values according to the assumed usage conditions. Please see page 401 for more details.
b Backlash of racks vary depending on mating pinions. Please calculate the backlash in accordance with the backlash of the mating pinion and values in the table "Backlash of Rack Tooth (Amount of Tooth-Thinning)" (Page 375).
[Caution on Secondary Operations] a Please read “Caution on Performing Secondary Operations” (Page 402) when performing modifications and/or secondary operations for safety concerns.
b Due to the gear teeth being induction hardened, no secondary operations can be performed on tooth areas including the bottom land (approx. 1 to 2 mm). Please use wire cutters or other carbide tools to modify the length.
Ground RacksCP
KSRGCP • KSRGCPF • KSRGCPFD
CP
AG G (F)GF B
H
CDE
I J
CPG
RD
Series
Counterbore dimensions Allowable force (N) Allowable force (kgf) Weight
(kg)Catalog No.
• : J Series (Available-on-request)H I J Bending strength Surface durability Bending strength Surface durability
6 10 6 2290 1460 233 149 1.06 2.13
•KSRGCPFD5-500J•KSRGCPFD5-1000J
10.8 17.5 11 9150 5860 933 597 3.61 7.29
•KSRGCPFD10-500J•KSRGCPFD10-1000J
15.2 23 16 22900 14200 2330 1450 8.47 17.3
•KSRGCPFD15-500J•KSRGCPFD15-1000J
17.5 26 18 36600 23400 3730 2390 12.2 24.5
•KSRGCPFD20-500J•KSRGCPFD20-1000J
[Caution on J series] a As available-on-request products, requires a lead-time for shipping within 5 working-days (excludes the day ordered), after placing an order. Please allow additional shipping time to get to your local distributor.
b Number of products we can process for one order is 1 to 20 units. For quantities of 21 or more pieces, we need to quote price and lead time.
c No black oxide is re-applied after adding secondary operation of mounting holes.
KGCU-R Rack Kit
Use of racks enables the conversion of rotation motion to linear motion. Applications include devices that provide lift.
Installment : Parallel axes gears Gear Type : Racks & Pinions Gears : KSRO1.5-500 KPS1.5-20 Weight : Approx. 1kg
* Orders for special, customized ground racks are accepted within the following specifications; CP25, Total length (A): Max.1000mm, Height (C): Max.90mm
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Steel Spur GearsCircular Pitch 2.5~20KSSCP
Specifications
Precision gradeJIS grade N8 (JIS B1702-1: 1998)JIS grade 4 (JIS B1702: 1976)
Gear teeth Standard full depth
Pressure angle 20°
Material S45C
Heat treatment —
Tooth hardness (less than 194HB)
G
A B C D
E F
S1
CP
Catalog No. Pitch mm(Module)
No. of teeth
ShapeBore Hub dia. Pitch dia. Outside dia. Face width Hub width Total length
AH7 B C D E F G
KSSCP2.5-20KSSCP2.5-25KSSCP2.5-30KSSCP2.5-40
CP2.5 (0.7958)
20253040
S1
688
10
13172128
15.9219.8923.8731.83
17.5121.4925.4633.42
10 10 20
KSSCP5-20KSSCP5-25KSSCP5-30KSSCP5-40
CP5 (1.5915)
20253040
S1
8101012
25323845
31.8339.7947.7563.66
35.0142.9750.9366.85
15 15 30
KSSCP10-20KSSCP10-25KSSCP10-30KSSCP10-40
CP10 (3.1831)
20253040
S1
15202020
50607580
63.6679.5895.49
127.32
70.0385.94
101.86133.69
30 20 50
KSSCP15-20KSSCP15-25KSSCP15-30
CP15 (4.7746)202530
S1222525
75100110
95.49119.37143.24
105.04128.92152.79
50 27 77
SSCP20-20SSCP20-25SSCP20-30
CP20 (6.3662)202530
S1253030
100130150
127.32159.15190.99
140.06171.89203.72
60 30 90
Thermal Refined RacksCircular Pitch 5, 0KRCPF
Specifications
Precision grade KHK R 001 grade 4
Gear teeth Standard full depth
Pressure angle 20°
Material SCM440
Heat treatment Thermal refining only
Tooth hardness 250~285HB*
C
B
D
CPCP
A
RF
CP
Catalog No. Pitch mm(Module)
No. of teeth
ShapeTotal length Face width Height Height to pitch line Allowable force (N) Allowable force (kgf) Weight
(kg)A B C D Bending strength Surface durability Bending strength Surface durability
KKRCPF5-500KKRCPF5-1000
CP5 (1.5915)
100200
RFRF
5001000 15 20 18.41 3660 1040 373 106 1.08
2.17 KKRCPF10-500KKRCPF10-1000
CP10 (3.1831)
50100
RFRF
5001000 30 35 31.82 14600 4480 1490 457 3.75
7.49
[Caution on Product Characteristics] a The allowable torques shown in the table are the calculated values according to the assumed usage conditions. Please see page 401 for more details.
b The backlash values shown in the table are the theoretical values when these gears and KSRCP Racks are in mesh.c If the bore diameter is less than φ4, then the bore tolerance class is H8. If the bore diameter is Ø5 or Ø6, and the hole length (total
length) exceeds 3 times the diameter, then the class is also H8.
*Due to the decarburization layer of about 0.5 mm thickness, the rectan-gular surface have less than HB187 hardness.
*Please see book one for additional products in these modules.
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For updated information, please visit qtcgears.com. 413
Steel Spur GearsCP
Distance traveled
in one turn (mm)
Allowable torque (N·m) Allowable torque (kgf·m) Backlash
(mm)
Weight
(kg)Catalog No.
Bending strength Surface durability Bending strength Surface durability
5062.575
100
4.14 5.58 7.06
10.1
0.48 0.83 1.30 2.64
0.42 0.57 0.72 1.03
0.049 0.085 0.13 0.27
0.05~0.200.07~0.220.07~0.220.07~0.22
0.022 0.034 0.054 0.098
KSSCP2.5-20KSSCP2.5-25KSSCP2.5-30KSSCP2.5-40
100125150200
24.8 33.5 42.3 60.4
3.52 6.06 9.45
18.7
2.53 3.42 4.32 6.16
0.36 0.62 0.96 1.91
0.08~0.240.09~0.260.09~0.260.09~0.26
0.14 0.22 0.33 0.54
KSSCP5-20KSSCP5-25KSSCP5-30KSSCP5-40
200250300400
198 268 339 483
30.8 52.7 81.7
160
20.2 27.3 34.5 49.3
3.14 5.37 8.33
16.4
0.13~0.330.15~0.360.15~0.360.15~0.36
0.99 1.49 2.26 3.66
KSSCP10-20KSSCP10-25KSSCP10-30KSSCP10-40
300375450
744 10001270
116 199 308
75.9 102 130
11.9 20.3 31.4
0.18~0.450.20~0.480.20~0.48
3.52 5.76 8.04
KSSCP15-20KSSCP15-25KSSCP15-30
400500600
159021402710
264 449 693
162 219 276
26.9 45.8 70.7
0.20~0.510.22~0.550.22~0.55
7.50 12.0 17.2
KSSCP20-20KSSCP20-25KSSCP20-30
Thermal Refined RacksCP
[Caution on Secondary Operations] a Please read “Caution on Performing Secondary Operations” (Page 402) when performing modifications and/or secondary operations for safety concerns.
b Avoid performing secondary operations that narrow the tooth width as it affects precision and strength.
[Caution on Product Characteristics] a The allowable forces shown in the table are the calculated values according to the assumed usage conditions. Please see page 401 for more details.
b Backlash of racks vary depending on mating pinions. Please calculate the backlash in accordance with the backlash of the mating pinion and values in the table "Backlash of Rack Tooth (Amount of Tooth-Thinning)" (Page 375).
[Caution on Secondary Operations] a Please read “Caution on Performing Secondary Operations” (Page 402) when performing modifications and/or secondary operations for safety concerns.
b If gear tooth hardening, or thermal refining, is applied, the decarburization layer (approx. 0.5 mm thickness) on the rectangu-lar surfaces cannot have the hardness you designate.
KKRCPF
KSSCP
For products not categorized in our Stock Gear series', custom gear production services with short lead times is available. For details see page VI.
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414
Steel RacksCircular Pitch 2.5~20KSRCP • KSRCPF • KSRCPFD
Specifications
Precision grade KHK R 001 grade 4
Gear teeth Standard full depth
Pressure angle 20°
Material S45C
Heat treatment Stress relief annealing
Tooth hardness (less than 95HRB)
Catalog No. Pitch mm(Module)
No. of teeth
ShapeTotal length Face width Height Height to pitch line Mounting hole dimensions No. of
mounting holes
Mountingscrew sizeA B C D E F G
KSRCPFD5-1000KSRCPFD5-1500KSRCPFD5-2000
CP5 (1.5915)200300410
RD100015002050
15 20 18.41 8503035
18069
12M5
KSRCPFD10-1000KSRCPFD10-1500KSRCPFD10-2000
CP10 (3.1831)100150205
RD100015002050
30 35 31.82 14503035
18069
12M10
KSRCPFD15-1000KSRCPFD15-1500KSRCPFD15-2000
CP15 (4.7746)67
100136
RD100515002040
50 50 45.23 2062.59030
22057
10M14
KSRCPFD20-1000KSRCPFD20-1500KSRCPFD20-2000
CP20 (6.3662)5075
102RD
100015002040
60 60 53.63 23609030
22057
10M16
SW SW
A B
CD
R1
CP
Catalog No. Pitch mm(Module)
Effectiveno. of teeth
ShapeTotal length Face width Height Height to pitch line Allowable force (N) Allowable force (kgf) Weight
(kg)A B C D Bending strength Surface durability Bending strength Surface durability
KSRCP2.5-100KSRCP5-100KSRCP10-100KSRCP15-100KSRCP20-100
CP2.5 (0.7958)CP5 (1.5915)CP10 (3.1831)CP15 (4.7746)CP20 (6.3662)
3818
853
R1R1R1R1R1
989898
10398
1015305060
1220355060
11.218.4131.8245.2353.63
76322909150
2290036600
143468
187045307480
77.8233933
23303730
14.547.7
191462763
0.0860.210.731.832.48
Catalog No. Pitch mm(Module)
No. of teeth
ShapeTotal length Face width Height Height to pitch line Allowable force (N) Allowable force (kgf) Weight
(kg)A B C D Bending strength Surface durability Bending strength Surface durability
KSRCPF2.5-500KSRCPF2.5-1000 CP2.5 (0.7958) 200
400 RF 5001000 10 12 11.2 763 143 77.8 14.5 0.44
0.88
KSRCPF5-500KSRCPF5-1000KSRCPF5-1500KSRCPF5-2000
CP5 (1.5915)
100200300410
RF
500100015002050
15 20 18.41 2290 468 233 47.7
1.082.173.254.44
KSRCPF10-500KSRCPF10-1000KSRCPF10-1500KSRCPF10-2000
CP10 (3.1831)
50100150205
RF
500100015002050
30 35 31.82 9150 1870 933 191
3.757.49
11.215.4
KSRCPF15-500KSRCPF15-1000KSRCPF15-1500KSRCPF15-2000
CP15 (4.7746)
3367
100136
RF
495100515002040
50 50 45.23 22900 4530 2330 462
8.7917.826.636.2
KSRCPF20-500KSRCPF20-1000KSRCPF20-1500KSRCPF20-2000
CP20 (6.3662)
255075
102
RF
500100015002040
60 60 53.63 36600 7480 3730 763
12.625.337.951.5
[Caution on Product Characteristics] a The allowable forces shown in the table are the calculated values according to the assumed usage conditions. Please see page 401 for more details.b Backlash of racks vary depending on mating pinions. Please calculate the backlash in accordance with the backlash of the mating pinion and values in the table
"Backlash of Rack Tooth (Amount of Tooth-Thinning)" (Page 375).c After attaching the racks to the base, please fasten with dowel pins. Clamping only with mounting screws could possibly cause the screws to be broken, due to a
heavy load.
*SW Saw Blade Finished
Sp
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Gea
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Gea
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For updated information, please visit qtcgears.com. 415
Steel RacksCP
Counterbore dimensions Allowable force (N) Allowable force (kgf) Weight
(kg)Catalog No.
H I J Bending strength Surface durability Bending strength Surface durability
6 10 6 2290 468 233 47.72.13 3.20 4.38
KSRCPFD5-1000KSRCPFD5-1500KSRCPFD5-2000
10.8 17.5 11 9150 1870 933 1917.29
10.9 14.9
KSRCPFD10-1000KSRCPFD10-1500KSRCPFD10-2000
15.2 23 16 22900 4530 2330 46217.3 25.9 35.2
KSRCPFD15-1000KSRCPFD15-1500KSRCPFD15-2000
17.5 26 18 36600 7480 3730 763 24.5 36.8 50.0
KSRCPFD20-1000KSRCPFD20-1500KSRCPFD20-2000
C
B
D
CPCP
A
RF
CP
AG G (F)GF B
H
CDE
I J
CP
RD
[Caution on Secondary Operations] a Please read “Caution on Performing Secondary Operations” (Page 402) when performing modifi-cations and/or secondary operations for safety concerns.
b If gear tooth hardening, or thermal refining, is applied, the decarburization layer (approx. 0.5 mm thickness) on the rectangular surfaces cannot have the hardness you designate.
c Avoid hardening Racks with bolt holes, due to deformation occurring at the mounting hole and the difficulty of straightening the rack after hardening.
KSRCPFD
KSRCP • KSRCPF • KSRCPFD
For products not categorized in our Stock Gear series', custom gear production services with short lead times is available. For details see page VI.
Sp
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ears
Hel
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Gea
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Rac
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Gea
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416
Stainless Steel Spur GearsCircular Pitch 5, 10KSUSCP
Specifications
Precision gradeJIS grade N8 (JIS B1702-1: 1998)JIS grade 4 (JIS B1702: 1976)
Gear teeth Standard full depth
Pressure angle 20°
Material SUS303
Heat treatment —
Tooth hardness (less than 187HB)
G
A B C D
E F
S1
Stainless Steel RacksCircular Pitch 5, 10KSURCPF • KSURCPFD
C
B
D
CPCP
A
RF
Catalog No. Pitch mm(Module)
No. of teeth
ShapeTotal length Face width Height Height to pitch line Mounting hole dimensions No. of
mounting holes
Mountingscrew sizeA B C D E F G
KSURCPFD5-1000KSURCPFD10-1000
CP5 (1.5915)CP10 (3.1831)
200100
RDRD
10001000
1530
2035
18.4131.82
814
5050
180180
66
M5M10
CP
CP
Catalog No. Pitch mm(Module)
No. of teeth
ShapeTotal length Face width Height Height to pitch line Allowable force (N) Allowable force (kgf) Weight
(kg)A B C D Bending strength Surface durability Bending strength Surface durability
KSURCPF5-500KSURCPF5-1000 CP5 (1.5915) 100
200 RF 5001000 15 20 18.41 1090 263 111 26.8 1.08
2.16KSURCPF10-500KSURCPF10-1000 CP10 (3.1831) 50
100 RF 5001000 30 35 31.82 4370 1050 445 107 3.73
7.46
[Caution on Product Characteristics] a The allowable torques shown in the table are the calculated values according to the assumed usage conditions. Please see page 401 for more details.
b The backlash values shown in the table are the theoretical values when these gears and KSURCPF Racks are in mesh.
[Caution on Product Characteristics] a The allowable forces shown in the table are the calculated values according to the assumed usage conditions. Please see page 401 for more details.b Backlash of racks vary depending on mating pinions. Please calculate the backlash in accordance with the backlash of the mating pinion and values in the table "Back-
lash of Rack Tooth (Amount of Tooth-Thinning)" (Page 375).c For products made of stainless steel, heat treatment* and passivation ** solutions are applied. Passivation is a rust-resistance
treatment, but it is not effective on the machined surface and not a totally rustproof solution. *Heat Treatment Solution Heat treatment by the carbon formed on the surface during blank manufacturing is made to infiltrate the material interior. **Passivation Immersion of the metal in a nitric acid solution to make it more rust-resistant.d After attaching the racks to the base, please fasten with dowel pins. Clamping only with mounting screws could possibly cause the screws to be broken, due to a heavy load.
Specifications
Precision grade KHK R 001 grade 5
Gear teeth Standard full depth
Pressure angle 20°
Material SUS304
Heat treatment Solution heat treatment
Tooth hardness (less than 187HB)
Catalog No. Pitch mm(Module)
No. of teeth
ShapeBore Hub dia. Pitch dia. Outside dia. Face width Hub width Total length
AH7 B C D E F G
KSUSCP5-20KSUSCP5-25KSUSCP5-30
CP5 (1.5915)
202530
S18
1010
253238
31.8339.7847.74
35.0142.9750.93
15 15 30
KSUSCP10-20KSUSCP10-25KSUSCP10-30
CP10 (3.1831)
202530
S1152020
506075
63.6679.5795.49
70.0385.94
101.8630 20 50
Sp
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Rac
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& P
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Gea
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Gea
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crew
Gea
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Gea
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Bev
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For updated information, please visit qtcgears.com. 417
Stainless Steel Spur GearsCP
Distance traveled
in one turn (mm)
Allowable torque (N·m) Allowable torque (kgf·m)Backlash
(mm)
Weight
(kg)Catalog No.
Bending strength Surface durability Bending strength Surface durability
100125150
13.7 18.5 23.4
2.50 4.31 6.72
1.40 1.89 2.39
0.25 0.44 0.68
0.08~0.260.09~0.280.09~0.28
0.14 0.22 0.32
KSUSCP5-20KSUSCP5-25KSUSCP5-30
200250300
110 148 187
21.9 37.4 58.0
11.2 15.1 19.1
2.23 3.82 5.92
0.13~0.350.15~0.380.15~0.38
0.98 1.48 2.24
KSUSCP10-20KSUSCP10-25KSUSCP10-30
Stainless Steel RacksCP
CP
AG G (F)GF B
H
CDE
I J
CP
RD
Counterbore dimensions Allowable force (N) Allowable force (kgf) Weight
(kg)Catalog No.
H I J Bending strength Surface durability Bending strength Surface durability
610.8
1017.5
611
10904370
263 1050
111 445
26.8 107
2.12 7.25
KSURCPFD5-1000KSURCPFD10-1000
[Caution on Secondary Operations] a Please read “Caution on Performing Secondary Operations” (Page 402) when performing modifications and/or secondary operations for safety concerns.
b Avoid performing secondary operations that narrow the tooth width. as it affects precision and strength.
[Caution on Secondary Operations] a Please read “Caution on Performing Secondary Operations” (Page 402) when performing modifications and/or secondary operations for safety concerns.
KSURCPFD
KSUSCP
KSURCPF • KSURCPFD
For products not categorized in our Stock Gear series', custom gear production services with short lead times is available. For details see page VI.
*Please see book one for additional products in these modules.
*Please see book one for additional products in these modules.
Sp
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ears
Hel
ical
Gea
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tern
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Rac
ksC
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& P
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Gea
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Gea
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Gea
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418
A
BF
CDE
A
dD
SW SW
Round RacksCircular Pitch 2.5, 5, 10KSROCP
Specifications
Precision grade KHK R 001 grade 4
Gear teeth Standard full depth
Pressure angle 20°
Material S45C
Heat treatment Stress relief annealing
Tooth hardness (less than 95HRB)
Metal Flexible RacksCircular Pitch 5KFRCP
Specifications
Precision grade KHK R 001 grade 8
Gear teeth Standard full depth
Pressure angle 20°
Material SS400
Heat treatment —
Tooth hardness (less than187HB)
R3
R2
CP
CP
Catalog No. Pitch mm(Module)
ShapeTotal length Face width Height Height to pitch line Thickness of bace Width of bace Allowable force (N) Allowable force (kgf) Weight
(kg)A B C D E F Bending strength Bending strength
FRCP5-2000FRCP5-3000FRCP5-4000
CP5 (1.5915)R3R3R3
200030004000
101010
666
4.414.414.41
222
171717
801801801
81.781.781.7
0.911.371.83
[Caution on Product Characteristics] a The allowable forces shown in the table are the calculated values according to the assumed usage conditions. Please see page 401 for more details.
b Backlash of racks vary depending on mating pinions. Please calculate the backlash in accordance with the backlash of the mating pinion and values in the table "Backlash of Rack Tooth (Amount of Tooth-Thinning)" (Page 375).
[Caution on Secondary Operations] a Please read “Caution on Performing Secondary Operations” (Page 402) when performing modifications and/or secondary operations for safety concerns.
b Please avoid hardening Round Racks. It causes contortion and deformation, and straightening processes are difficult to apply.
[Caution on Product Characteristics] a The allowable forces shown in the table are the calculated values according to the assumed usage conditions. Please see page 401 for more details.b In cases of using a molded flexible rack in an arc shape, proper meshing cannot be obtained as the pitch error and the tooth profile error increases. Be sure and adjust
the center distance so that the pinion turns without any problem.c Metal Flexible racks are not suitable for use when positioning accuracy is required.d The tolerance of the height (C) is 0 to -0.15 and the tolerance of the width of the base (F) is 0 to -0.1.
*SW Saw Blade Finished
Example: Fastening of KFRCP Metal Flexible Racks
Fastening with flat head screws Spot welding
(Overhead view of Flexible Racks)
Catalog No. Pitch mm(Module)
Effectiveno. of teeth
ShapeTotal length Outside dia. Height to pitch line Allowable force (N) Allowable force (kgf) Weight
(kg)A dh9 D Bending strength Surface durability Bending strength Surface durability
KSROCP2.5-500KSROCP5-500KSROCP10-1000
CP2.5 (0.7958)CP5 (1.5915)CP10 (3.1831)
2009999
R2R2R2
505505
1010
101530
9.213.4126.82
474 16506610
91.8 324
1300
48.3 169 674
9.36 33.1
132
0.300.655.16
*Please see book one for additional products in these modules.