Product specification changes

Information on changes to KHK stock gear product specifications are listed below, starting with the latest.

Implementation Date / Effective for products manufactured from June 2026

Change in specifications	Applicable products : Hardened ground racks SRG(F), CP Hardened ground racks SRGCP(F) and any standardized modified products and modified products of the applicable products Changes : 1. Before change: Tooth surface grinding after black oxide treatment. After change: Black oxide treatment after tooth surface grinding (black oxide treatment applied to all surfaces). 2. Change of packaging box For more details please click here

Change in specifications

Applicable products :
Hardened ground racks SRG(F), CP Hardened ground racks SRGCP(F)
and any standardized modified products and modified products of the applicable products

Changes :
1.
Before change: Tooth surface grinding after black oxide treatment.
After change: Black oxide treatment after tooth surface grinding (black oxide treatment applied to all surfaces).
2.
Change of packaging box

For more details please click here

Implementation Date / 4 February 2025

Change in specifications	Applicable products : Mounting shaft MAS1.5 Changes : Dimensional changes due to supplier specification changes Dimension D : 34.2 => 30 Dimension F : 44 => 36 Dimension G : 60.4 => 52.4 Dimension I : 15 => 17

Implementation Date / July 2024

Change in specifications	Rack and pinion lubrication sysytem Applicable products : Battery type flex pump and its replacement battery (FP400B, BT-6V) Changes : In stock => Not in stock (Make to Order, Estimate per inquiry)

Implementation Date / 20 December 2024

Production stoppage	329 items in total (many other related products such as J-series) For more details please click here

Implementation Date / 20 June 2026

Production stoppage	2 items in total SRS-1, SRS-2

Implementation Date / 20 June 2026

Production stoppage	3 items in total FRCP5-2000, FRCP5-3000, FRCP5-4000

Implementation Date / December 2022 -, October 2023 -

Change in specifications	13 items in total The shape and weight of the following products will be changed. Please refer to the following PDF for details. SS2.5-60, SS2.5-80, SS2.5-90, SS2.5-100, SS3-50, SS3-60, SS5-50, SS2.5-120, SS3-80, SS3-100, SS3-120, SS4-70, SS4-80 Products with shape changes and weight changes (PDF)

Implementation Date / 1 October 2023

Change in specifications	Rack and pinion lubrication sysytem For more details please click here (PDF)

Implementation Date / 20 December 2022

Production stoppage	234 items in total For more details please click here The J series of the following products will also be discontinued. SRG, SRGF, KHG, NSU, AN, AG, SRTB

Implementation Date / 20 September 2022

Production stoppage	14 items in total DG Worm Wheel DG0.5-20R1, DG0.5-20R2, DG0.5-30R1, DG0.5-30R2, DG0.5-40R1, DG0.5-50R1, DG0.5-60R1, DG0.8-20R1, DG0.8-20R2, DG0.8-30R1, DG0.8-30R2, DG0.8-40R1, DG0.8-50R1, DG0.8-60R1

Implementation Date / 20 September 2022

Production stoppage	6 items in total PBX Miniature Bevel Gearboxes PBX-041L, PBX-061L, PBX-081L, PBX-041T, PBX-061T, PBX-081T

Implementation Date / 20 December 2020

Production stoppage	7 items in total KRG1-500, KRG1.5-500, KRG2-500, KRG2.5-500, KRG3-500 KRGCP5-500, KRGCP10-500

Implementation Date / 20 December 2020

Production stoppage	288 items in total MSGA : MSGA1-35, MSGA1-45, MSGA1-55, MSGA1.5-25, MSGA1.5-48, MSGA1.5-55, MSGA2-36, MSGA2-55, MSGA2-70, MSGA2-100, MSGA2.5-25, MSGA2.5-35, MSGA2.5-36, MSGA2.5-45, MSGA3-24, MSGA3-48, MSGA3-55, MSGA4-18, MSGA4-36, MSGA4-50 MSGB : MSGB1-55, MSGB1-80, MSGB1.5-35, MSGB1.5-48, MSGB1.5-55, MSGB1.5-100, MSGB2-48, MSGB2-55, MSGB2-70, MSGB2-100, MSGB2.5-35, MSGB2.5-48, MSGB2.5-55, MSGB3-24, MSGB3-36, MSGB3-45, MSGB3-55 SSS : SSS0.5-10, SSS0.5-11, SSS0.5-12, SSS0.5-13, SSS0.8-10, SSS0.8-11, SSS0.8-12, SSS0.8-13, SSS2-10, SSS2-11, SSS2-12, SSS2-13, SSS2.5-10, SSS2.5-11, SSS2.5-12, SSS2.5-13, SSS3-10, SSS3-11, SSS3-12, SSS3-13 SS : SS0.5-16A, SS0.5-21A, SS0.5-27A, SS0.5-30A, SS0.5-32A, SS0.5-35A, SS0.5-36A, SS0.5-40A, SS0.5-45A, SS0.5-50A, SS0.5-55A, SS0.5-70A, SS0.5-90A, SS0.5-100A, SS0.5-40B, SS0.5-60B, SS0.5-70B, SS0.5-30C SS0.8-16A, SS0.8-21A, SS0.8-24A, SS0.8-26A, SS0.8-32A, SS0.8-48A, SS0.8-50A, SS0.8-60A, SS0.8-70A, SS0.8-80A, SS0.8-90A, SS0.8-96A, SS0.8-100A, SS0.8-120A, SS0.8-25B, SS0.8-30B, SS0.8-60B SS1-16A, SS1-22A, SS1-25A, SS1-40A, SS1-60A, SS1-80A, SS1-90A, SS1-18B, SS1-24B, SS1-28B, SS1-50B, SS1-60B, SS1-100B, SS1-30C, SS1-40C, SS1-45C, SS1-30D SS1.5-12A, SS1.5-15A, SS1.5-20A, SS1.5-36A, SS1.5-40A, SS1.5-30B, SS1.5-40B, SS1.5-20C, SS1.5-24C SSY : SSY0.8-20A, SSY0.8-25A, SSY0.8-30A, SSY1-25A, SSY1-32A, SSY1-36A, SSY1-45A, SSY1-50A, SSY1-55A, SSY1-56A, SSY1-64A, SSY1-65A, SSY1-70A, SSY1-72A, SSY1-75A, SSY1-80A, SSY1-85A, SSY1-90A, SSY1-95A, SSY1-96A, SSY1-100A, SSY1-110A, SSY1-24B, SSY1-35B, SSY1-36B, SSY1-40B, SSY1-60B MSCPG : MSCPG5-20A, MSCPG5-25A, MSCPG5-30A, MSCPG5-40A, MSCPG10-20A, MSCPG10-25A, MSCPG10-30A, MSCPG10-40A, MSCPG5-20B, MSCPG5-25B, MSCPG5-30B, MSCPG5-40B, MSCPG10-20B, MSCPG10-25B, MSCPG10-30B, MSCPG10-40B, MSCPG5-40C BSS : BSS0.5-18A, BSS0.5-20B, BSS0.5-26A, BSS0.5-27A, BSS0.5-28A, BSS0.5-40B, BSS0.5-50B, BSS0.5-60A, BSS0.5-60B, BSS0.5-70A, BSS0.5-80A, BSS0.5-80B, BSS0.8-15A, BSS0.8-16A, BSS0.8-20A, BSS0.8-20B, BSS0.8-22A, BSS0.8-28A, BSS0.8-50A, BSS0.8-60B, BSS1-15A, BSS1-15B, BSS1-16A, BSS1-20A, BSS1-20B, BSS1-22A, BSS1-24B, BSS1-25A, BSS1-28A, BSS1-30D, BSS1-50A, BSS1-50C PR : PR1.5-1000, PR2-1000, PR2.5-1000, PR3-1000 SUR : SUR1.5-1000, SUR2-1000, SUR2.5-1000, SUR3-1000, SUR4-1000 SMZG : SMZG2-20R, SMZG2-20L, SMZG2.5-20R, SMZG2.5-20L, SMZG3-20R, SMZG3-20L SBZG : SBZG2-2030L, SBZG2-2040L, SBZG2-3020R, SBZG2-4020R, SBZG2.5-2030L, SBZG2.5-2040L, SBZG2.5-3020R, SBZG2.5-4020R, SBZG3-2030L, SBZG3-2040L, SBZG3-3020R, SBZG3-4020R MBSA / MBSB : MBSA2-1845L, MBSA2-4518R, MBSA2.5-1845L, MBSA2.5-4518R, MBSA3-1845L, MBSA3-4518R, MBSA4-1845L, MBSA4-4518R, MBSA5-1845L, MBSA5-4518R, MBSA6-1845L, MBSA6-4518R, MBSB2-1845L, MBSB2-4518R, MBSB2.5-1845L, MBSB2.5-4518R, MBSB3-1845L, MBSB3-4518R, MBSB4-1845L, MBSB5-1845L, MBSB6-1845L KSP : KSP053001GUR, KSP053001GUL KSP0611.5GUP, KSP0611.5GUG, KSP0901.5GUP, KSP0901.5GUG, KSP1051.5GUP, KSP1051.5GUG, KSP1241.5GUP, KSP1241.5GUG, KSP1411.5GUP, KSP1411.5GUG, KSP1631.5GUP, KSP1631.5GUG, KSP1811.5GUP, KSP1811.5GUG KSP056002GUP, KSP056002GUG CG : CG1.5-100R1, CG1.5-80R1, CG2-30L2, CG2-50L2, CG2.5-30L1, CG2.5-30L2, CG2.5-50R2, CG2.5-50L1, CG2.5-50L2, CG2.5-60L1, CG3-30L2, CG3-40L1, CG3-50R2, CG3-50L2, CG5-20R2, CG5-50R2, CG6-20R2, CG6-30R2, CG6-50R2 GC : GC1-20, GC1-22, GC1-25, GC2-30, GC2-32, GC2-35, GC2-40, GC3-45, GC3-50

Production stoppage

288 items in total

MSGA :
MSGA1-35, MSGA1-45, MSGA1-55, MSGA1.5-25, MSGA1.5-48, MSGA1.5-55, MSGA2-36, MSGA2-55, MSGA2-70, MSGA2-100, MSGA2.5-25, MSGA2.5-35, MSGA2.5-36, MSGA2.5-45, MSGA3-24, MSGA3-48, MSGA3-55, MSGA4-18, MSGA4-36, MSGA4-50
MSGB :
MSGB1-55, MSGB1-80, MSGB1.5-35, MSGB1.5-48, MSGB1.5-55, MSGB1.5-100, MSGB2-48, MSGB2-55, MSGB2-70, MSGB2-100, MSGB2.5-35, MSGB2.5-48, MSGB2.5-55, MSGB3-24, MSGB3-36, MSGB3-45, MSGB3-55
SSS :
SSS0.5-10, SSS0.5-11, SSS0.5-12, SSS0.5-13, SSS0.8-10, SSS0.8-11, SSS0.8-12, SSS0.8-13, SSS2-10, SSS2-11, SSS2-12, SSS2-13, SSS2.5-10, SSS2.5-11, SSS2.5-12, SSS2.5-13, SSS3-10, SSS3-11, SSS3-12, SSS3-13
SS :
SS0.5-16A, SS0.5-21A, SS0.5-27A, SS0.5-30A, SS0.5-32A, SS0.5-35A, SS0.5-36A, SS0.5-40A, SS0.5-45A, SS0.5-50A, SS0.5-55A, SS0.5-70A, SS0.5-90A, SS0.5-100A, SS0.5-40B, SS0.5-60B, SS0.5-70B, SS0.5-30C
SS0.8-16A, SS0.8-21A, SS0.8-24A, SS0.8-26A, SS0.8-32A, SS0.8-48A, SS0.8-50A, SS0.8-60A, SS0.8-70A, SS0.8-80A, SS0.8-90A, SS0.8-96A, SS0.8-100A, SS0.8-120A, SS0.8-25B, SS0.8-30B, SS0.8-60B
SS1-16A, SS1-22A, SS1-25A, SS1-40A, SS1-60A, SS1-80A, SS1-90A, SS1-18B, SS1-24B, SS1-28B, SS1-50B, SS1-60B, SS1-100B, SS1-30C, SS1-40C, SS1-45C, SS1-30D
SS1.5-12A, SS1.5-15A, SS1.5-20A, SS1.5-36A, SS1.5-40A, SS1.5-30B, SS1.5-40B, SS1.5-20C, SS1.5-24C
SSY :
SSY0.8-20A, SSY0.8-25A, SSY0.8-30A, SSY1-25A, SSY1-32A, SSY1-36A, SSY1-45A, SSY1-50A, SSY1-55A, SSY1-56A, SSY1-64A, SSY1-65A, SSY1-70A, SSY1-72A, SSY1-75A, SSY1-80A, SSY1-85A, SSY1-90A, SSY1-95A, SSY1-96A, SSY1-100A, SSY1-110A, SSY1-24B, SSY1-35B, SSY1-36B, SSY1-40B, SSY1-60B
MSCPG :
MSCPG5-20A, MSCPG5-25A, MSCPG5-30A, MSCPG5-40A, MSCPG10-20A, MSCPG10-25A, MSCPG10-30A, MSCPG10-40A, MSCPG5-20B, MSCPG5-25B, MSCPG5-30B, MSCPG5-40B, MSCPG10-20B, MSCPG10-25B, MSCPG10-30B, MSCPG10-40B, MSCPG5-40C
BSS :
BSS0.5-18A, BSS0.5-20B, BSS0.5-26A, BSS0.5-27A, BSS0.5-28A, BSS0.5-40B, BSS0.5-50B, BSS0.5-60A, BSS0.5-60B, BSS0.5-70A, BSS0.5-80A, BSS0.5-80B, BSS0.8-15A, BSS0.8-16A, BSS0.8-20A, BSS0.8-20B, BSS0.8-22A, BSS0.8-28A, BSS0.8-50A, BSS0.8-60B, BSS1-15A, BSS1-15B, BSS1-16A, BSS1-20A, BSS1-20B, BSS1-22A, BSS1-24B, BSS1-25A, BSS1-28A, BSS1-30D, BSS1-50A, BSS1-50C
PR :
PR1.5-1000, PR2-1000, PR2.5-1000, PR3-1000
SUR :
SUR1.5-1000, SUR2-1000, SUR2.5-1000, SUR3-1000, SUR4-1000
SMZG :
SMZG2-20R, SMZG2-20L, SMZG2.5-20R, SMZG2.5-20L, SMZG3-20R, SMZG3-20L
SBZG :
SBZG2-2030L, SBZG2-2040L, SBZG2-3020R, SBZG2-4020R, SBZG2.5-2030L, SBZG2.5-2040L, SBZG2.5-3020R, SBZG2.5-4020R, SBZG3-2030L, SBZG3-2040L, SBZG3-3020R, SBZG3-4020R
MBSA / MBSB :
MBSA2-1845L, MBSA2-4518R, MBSA2.5-1845L, MBSA2.5-4518R, MBSA3-1845L, MBSA3-4518R, MBSA4-1845L, MBSA4-4518R, MBSA5-1845L, MBSA5-4518R, MBSA6-1845L, MBSA6-4518R, MBSB2-1845L, MBSB2-4518R, MBSB2.5-1845L, MBSB2.5-4518R, MBSB3-1845L, MBSB3-4518R, MBSB4-1845L, MBSB5-1845L, MBSB6-1845L
KSP :
KSP053001GUR, KSP053001GUL
KSP0611.5GUP, KSP0611.5GUG, KSP0901.5GUP, KSP0901.5GUG, KSP1051.5GUP, KSP1051.5GUG, KSP1241.5GUP, KSP1241.5GUG, KSP1411.5GUP, KSP1411.5GUG, KSP1631.5GUP, KSP1631.5GUG, KSP1811.5GUP, KSP1811.5GUG
KSP056002GUP, KSP056002GUG
CG :
CG1.5-100R1, CG1.5-80R1, CG2-30L2, CG2-50L2, CG2.5-30L1, CG2.5-30L2, CG2.5-50R2, CG2.5-50L1, CG2.5-50L2, CG2.5-60L1, CG3-30L2, CG3-40L1, CG3-50R2, CG3-50L2, CG5-20R2, CG5-50R2, CG6-20R2, CG6-30R2, CG6-50R2
GC :
GC1-20, GC1-22, GC1-25, GC2-30, GC2-32, GC2-35, GC2-40, GC3-45, GC3-50

Implementation Date / 1 October 2020

Change in specifications	Change in the surface treatment : Trivalent chromate plating => black oxide finish 6 items in total GC1-I, GC1-12S, GC2-I, GC2-20S, GC3-I, GC3-20S Part number changes in DSL lubricating system components : Flex pump FP400 => FP401 Tube T - 6 x 4 => T - 6 x 4 - 5

Implementation Date / 20 September 2019

Production stoppage	19 items in total KRGD1-500, KRGD1.5-500, KRGD2-500, KRGD2.5-500, KRGD3-500 KRGCPD5-500, KRGCPD10-500 SW4-L1, SW4-L2 BG4-20L1, BG4-20L2 CG4-20L1, CG4-20L2, CG4-30L1, CG4-30L2, CG4-40L1, CG4-50L1, CG4-50L2, CG4-60L1

Implementation Date / 21 June 2019

Change in specifications	KHG (All items) : The finish of the bore & side faces are no longer ground & will be supplied with machined surfaces & black oxide coating.

Implementation Date / 21 June 2019

Production stoppage	13 items in total LS0.5-12, 16, 20, 30, 50, 60, 70, 80 LS0.8-12, 16, 20, 30, 50

Implementation Date / 20 June 2019

Production stoppage	300 items in total 1. SSG Ground Spur Gears (m0.5, 0.8) : 28 items 2. SS Steel Spur Gears (m0.5, 0.8, 1, 1.5) : 157 items 3. BSS Brass Spur Gears (m0.5, 0.8, 1) : 64 items 4. KHG Ground Helical Gears (m1, 1.5, 2, 2.5, 3) : 36 items 5. SRO Steel Round Racks (m6) : 1 item 6. AN Aluminium Bronze Screw Gears (m4) : 6 items 7. KSCP CP Hardened Spur Gears (CP5, CP10) : 8 items For more details please click here

Production stoppage

300 items in total
1. SSG Ground Spur Gears (m0.5, 0.8) : 28 items
2. SS Steel Spur Gears (m0.5, 0.8, 1, 1.5) : 157 items
3. BSS Brass Spur Gears (m0.5, 0.8, 1) : 64 items
4. KHG Ground Helical Gears (m1, 1.5, 2, 2.5, 3) : 36 items
5. SRO Steel Round Racks (m6) : 1 item
6. AN Aluminium Bronze Screw Gears (m4) : 6 items
7. KSCP CP Hardened Spur Gears (CP5, CP10) : 8 items
For more details please click here

Implementation Date / 1 October 2018

Change in specifications	CG2-50R1, R2, L1, L2 CG2-60R1, L1 CG2.5-40R1, L1 CG4-30R1, R2, L1, L2 All J-series items based on above items (88 items in total): Shape HB => Shape H1

Implementation Date / 19 September 2018

Change in specifications	DS1-12 : Shape S9 => S8B Web thickness (3) => (5.5) DS1-15 : Web thickness (3) => (5)

Implementation Date / 20 December 2017

Production stoppage	16 items in total DS0.5-18, DS0.5-25, DS0.5-28, DS0.5-32, DS0.5-35 DS0.5-36, DS0.5-64, DS0.5-72 DS0.8-18, DS0.8-25, DS0.8-28, DS0.8-32, DS0.8-35 DS0.8-36,DS0.8-64 DS0.8-72

Implementation Date / 20 September 2017

Production stoppage	SSAY/K Spur Gears with Built-In Clamps All 69 items

Implementation Date / From the production date of 21 April 2017

Change in specifications	Applicable products : Laser hardened products Gear precisions have been improved as a result of research in laser processing technology. KHKR001 Grade 5 => KHK R001 Grade 4 All items in the product group of SRF-HL : 42 items

Implementation Date / The last day of November 2016

Change in specifications	Black oxide finish was added to the products listed below. Applicable products : 2 series All MM products : 15 items All MMS products : 30 items

Implementation Date / The last day of Octorber 2016

Production stoppage	All KSP Ground Spiral Miter Gears F shape products : 20 items All KSP Ground Spiral Bevel Gears F shape products : 32 items

Implementation Date / The last day of Octorber 2016

Production stoppage	All SUSL Stainless Steel Fairloc Hub Spur Gears products : 74 items All DSL Acetal Fairloc Hub Spur Gears products : 59 items

Implementation Date / The last day of Octorber 2016

Production stoppage	Total 12 items MHP1-0603R, MHP1-3060L, MHP1.5-0602R MHP1.5-2060L, MHP1-0901R, MHP1-1090L MHP1-1201R, MHP1-1120L, MHP1-1801R MHP1-1180L, MHP1-2001R, MHP1-1200L

Implementation Date / From the production date of September 2016

Change in specifications	Improvement in configuration from S6 to S5 Improvement in configuration from S6K to S5K (J series) Total 23 items S6 Configuration of SSA Straight Spur Gears Similarly with the above, J Series will also change

Implementation Date / 1 September 2015

Change in specifications	Improvement in configuration from S2 to S1 Total 4 items MSGA(B)2-80 2 items MSGA(B)2-100 2 items