CP Racks & Pinions – Facilitates positioning in linear motion applications –
By adopting CP (circular pitch) racks and pinions, the travel distance with one rotation of pinion becomes an integer number. This improves the user’s convenience. For example, if the pitch of the pinion is CP5 (pitch is 5mm) and if the number of teeth is 20, then when the pinion rotates once, the distance traveled becomes exactly 100mm.
It has been listed elsewhere, but there are three international standards of gear pitches: module, inch standard of DP and above mentioned CP. The following link will lead to the comparison of these pitches :
Table of Comparative Gear Pitch
There is no interchangeability between pinion and rack if different pitch systems are used in the pair.
In addition, KHK offers tapered racks and pinions. These are produced by angling each tooth of the rack and pinion. Conventionally, in order to adjust the backlash, it was necessary to change the distance between the rack and the axis of the pinion. But with tapered rack and pinion, this difficult task can be easily accomplished by simply shifting the pinion in its axial direction. Because of the taper in the teeth, they are not interchangeable with regular rack and pinion.
With this technical data you can view comprehensive information regarding KHK CP gear racks such as their features and advice and warnings when selecting and using them.
KTSCP
CP Tapered Pinions
CP : 5, 10
No. of tooth : 20-40
Material : SCM440
Hardening : Thermal refined
Tooth finish : Cut (non-ground)
Grade : JIS N8
STRCPF pinion with adjustable backlash.
STRCPF / STRCPFD
CP Tapered Racks
CP : 5, 10
Length : 1000mm
Material : S45C
Hardening : None
Tooth finish : Cut (non-ground)
Grade : KHK R001 4
Racks with tapered helix with adjustable backlash.
MSCPG
CP Hardened Ground Spur Gears
CP : 5, 10
No. of tooth : 20-40
Material : SCM415
Hardening : Overall carburizing
Tooth finish : Ground teeth
Grade : JIS N5 (Please see details on PDF)
MRGCPF / MRGCPFD
CP Hardened Ground Racks
CP : 5, 10
Length : 500mm
Material : SCM415
Hardening : Tooth carburized
Tooth finish : Ground teeth
Grade : KHK R001 1 (Please see details on PDF)
CP racks that have been carburized and ground that have excellent accuracy, strength and wear resistance. Secondary operations are possible except for teeth.
KSCPG
CP Ground Spur Gears
CP : 5, 10
No. of tooth : 25-40
Material : SCM440
Hardening : Thermal refined, gear teeth induction hardened
Tooth finish : Ground teeth
Grade : JIS N6 (Please see details on PDF)
CP gears that have been tempered, hardened and ground that has excellent accuracy, strength and abrasion resistance. Recommended for pinions of ground CP racks. Secondary operations are possible except for teeth.
KRGCPF-H / KRGCPFD-H
CP Hardened Ground Racks
CP : 5, 10
Length : 500,1000mm
Material : SCM440
Hardening : Thermal refined, gear teeth induction hardened
Tooth finish : Ground teeth
Grade : KHK R001 1 (Please see details on PDF)
CP racks that have been tempered, hardened and ground that have excellent accuracy, strength and wear resistance. Secondary operations are possible except for teeth.
KRGCP / KRGCPF / KRGCPFD
CP Thermal Refined Ground Racks
CP : 5, 10
Length : 100,500,1000mm
Material : SCM440
Hardening : Thermal refined
Tooth finish : Ground teeth
Grade : KHK R001 1
CP racks that have been tempered and ground that have excellent accuracy and strength.
SSCPGS
CP Ground Spur Pinion Shafts
CP : 5, 10
No. of tooth : 10-20
Material : S45C
Hardening : Thermal refined, gear teeth induction hardened
Tooth finish : Ground teeth
Grade : JIS N7
CP gears with shafts that have been tempered, hardened and ground. Secondary operations can be given except for the teeth. This product is ideal for the pinion of the SRGCPF rack.
SSCPG
CP Ground Spur Gears
CP : 5, 10, 15, 20
No. of tooth : 20-40
Material : S45C
Hardening : Gear teeth induction hardened
Tooth finish : Ground teeth
Grade : JIS N7 (Please see details on PDF)
CP gears that have been hardened and ground. Secondary operations can be given except for the teeth. This product is ideal for the pinion of the SRGCPF rack.
SRGCP / SRGCPF / SRGCPFD
CP Hardened Ground Racks
CP : 5, 10, 15, 20
Length : 100,500,1000mm
Material : S45C
Hardening : Gear teeth induction hardened
Tooth finish : Ground teeth
Grade : KHK R001 3 (Please see details on PDF)
Racks that have been hardened and ground with a good balance of accuracy, wear resistance and cost. Secondary operations are possible except for teeth.
KRCPF-H / KRCPFD-H
CP Hardened Racks
CP : 5, 10
Length : 1000mm
Material : SCM440
Hardening : Thermal refined, gear teeth induction hardened
Tooth finish : Cut (no-grinding)
Grade : KHK R001 5
CP racks that have been tempered and hardened that have excellent strength and wear resistance. Secondary operations are possible except for teeth.
KSSCP
CP Thermal Refined Spur Gears
CP : 5, 10
No. of tooth : 25-40
Material : SCM440
Hardening : Thermal refined
Tooth finish : Cut (non-ground)
Grade : JIS N8 (Please see details on PDF)
Tempered gears with excellent bending strength that can be given secondary operations. The teeth can be additionally hardened. This product is ideal for the pinion of the KRCPF rack.
KRCPF / KRCPFD
CP Thermal Refined Racks
CP : 5, 10
Length : 500,1000mm
Material : SCM440
Hardening : Thermal refined
Tooth finish : Cut (no-grinding)
Grade : KHK R001 4 (Please see details on PDF)
CP racks that have been tempered with excellent strength.
SSCP
CP Spur Gears
CP : 2.5, 5, 10, 15, 20
No. of tooth : 20-40
Material : S45C
Hardening : Please see details on PDF
Tooth finish : Cut (no-grinding)
Grade : JIS N8 (Please see details on PDF)
Available at a low price. The teeth can be additionally hardened. This product is ideal for the pinion of the SRCP and SROCP racks.
SRCPF-H / SRCPFD-H
CP Hardened Racks
CP : 5, 10, 15, 20
Length : 1000mm
Material : S45C
Hardening : Gear teeth induction hardened
Tooth finish : Cut (no-grinding)
Grade : KHK R001 5
CP racks that have been hardened with excellent wear resistance. Secondary operations are possible except for teeth.
SRCPF-HL / SRCPFD-HL
CP Laser Hardened Racks
CP : 5, 10, 15, 20
Length : 1000,1500,2000mm
Material : S45C
Hardening : Gear teeth laser hardened
Tooth finish : Cut (no-grinding)
Grade : KHK R001 4 equivalent
CP racks that have been laser hardened with a good balance of wear resistance and cost. Secondary operations are possible except for teeth.
SRCP / SRCPF / SRCPFD / SRCPFK
CP Steel Racks
CP : 2.5, 5, 10, 15, 20
Length : 100,500,1000,1500,2000mm
Material : S45C
Hardening : None
Tooth finish : Cut (no-grinding)
Grade : KHK R001 4 (Please see details on PDF)
Many lineups are available at a low price and excellent usability.
SUSCP
CP Stainless Steel Spur Gears
CP : 5, 10
No. of tooth : 20-30
Material : SUS303
Hardening : None
Tooth finish : Cut (no-grinding)
Grade : JIS N8 (Please see details on PDF)
Stainless steel CP gears with rust resistance. This product is ideal for the pinion of the SURCPF rack.
SURCPF / SURCPFD
CP Stainless Steel Racks
CP : 5, 10
Length : 500,1000mm
Material : SUS304
Hardening : Solution treated
Tooth finish : Cut (no-grinding)
Grade : KHK R001 5 (Please see details on PDF)
Stainless steel CP racks with rust resistance.
SROCP
CP Round Racks
CP : 2.5, 5, 10
Length : 500, 1000mm
Material : S45C
Hardening : None
Tooth finish : Cut (no-grinding)
Grade : KHK R001 4
CP round racks that are suitable when the rack side moves.
FRCP
CP Metal Flexible Racks
CP : 5
Length : 2000,3000,4000mm
Material : SS400
Hardening : None
Tooth finish : Cut (no-grinding)
Grade : KHK R001 8
Thin CP racks that can be bent.
[NOTE 1] The catalog numbers of the above racks with (F) suffix have both ends machined so that they can be butted against each other. The items with (D) have mounting screw holes for immediate assembly.
Related links :
CP齿轮齿条 - 中文页