[Hardened Ground Racks (SRG/SRGF/SRGFD/SRGFK)] Series list   
diagram
Specifications
Precision grade KHK R 001 grade 3 Surface hardness HRC50 - 60 (*1)
Gear teeth Standard full depth Surface treatment Black oxide except gear tooth (*2)
Pressure angle 20° Surface finish Ground
Material S45C Datum reference surface for teeth grinding Bottom surface
Heat treatment Tooth surfaces induction hardened (*1) Modifications Secondary operations can be performed with exception of tooth area.
*Precision grade of J Series products corresponds to an 'equivalent'.    (*1)Tooth areas, where size is less than 0.8 module, without quenching treatment.Hardness level ranges from 200HB to 270HB as refine-treated product.(*2)For J Serious products, without black oxide repeatedly applied on secondary-operated parts.
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Catalog No.
Module
Effective No. of teeth Shape Total length
A
Face width
B
Height
C
Height to pitch line
D
Mounting hole dimensions E Mounting hole dimensions F Mounting hole dimensions G No. of mounting holes Mounting screw size Counterbore dimensions H Counterbore dimensions I Counterbore dimensions J Allowable force(kgf)
Bending strength
Allowable force(kgf)
Surface durability
Weight
(kg)
Unit Price
Click Here
Prices of J Series Products
1-4
Prices of J Series Products
5-20
  SRG0.5-100 
  SRG0.8-100 
  SRG1-100 
  SRG1.5-100 
  SRG2-100 
  SRG2.5-100 
  SRG3-100 
  SRG4-100 
  SRG5-110 
  SRG6-110 
  SRGF0.5-300 
  SRGF0.8-300 
  SRGF1-300 
  SRGF1-500 
  SRGF1.5-500 
  SRGF1.5-1000 
  SRGF2-500 
  SRGF2-1000 
  SRGF2.5-500 
  SRGF2.5-1000 
  SRGF3-500 
  SRGF3-1000 
  SRGF4-500 
  SRGF4-1000 
  SRGF5-500 
  SRGF5-1000 
  SRGF6-500 
  SRGF6-1000 
 SRGFK0.5-300J 
 SRGFK0.8-300J 
 SRGFK1-300J 
 SRGFK1-500J 
 SRGFD1.5-500J 
 SRGFD1.5-1000J 
 SRGFD2-500J 
 SRGFD2-1000J 
 SRGFD2.5-500J 
 SRGFD2.5-1000J 
 SRGFD3-500J 
 SRGFD3-1000J 
 SRGFD4-500J 
 SRGFD4-1000J 
 SRGFD5-500J 
 SRGFD5-1000J 
 SRGFD6-500J 
 SRGFD6-1000J 
0.561R110151211.5        29.98.210.046   
0.838R1101812.311.5        76.621.00.073   
129R198101211        87.952.40.085   
1.520R1101152018.5        2201380.22   
214R198202523        3912460.35   
2.511R1100253027.5        6113840.54   
39R1101303532        8795530.76   
46R198404541        15609831.26   
55R1108505045        244015401.91   
64R1111606054        352022102.82   
0.5191RF300.0251211.5        29.98.210.14   
0.8119RF299.08812.311.5        76.621.00.22   
196RF301.59101211        87.952.40.26   
1159RF499.51101211        87.952.40.43   
1.5106RF499.51152018.5        2201381.09   
1.5212RF999.03152018.5        2201382.18   
280RF502.65202523        3912461.82   
2160RF1005.31202523        3912463.63   
2.564RF502.65253027.5        6113842.71   
2.5128RF1005.31253027.5        6113845.43   
353RF499.51303532        8795533.76   
3106RF999.03303532        8795537.53   
440RF502.65404541        15609836.47   
480RF1005.31404541        156098312.9   
532RF502.65505045        244015408.88   
564RF1005.31505045        2440154017.8   
626RF490.09606054        3520221012.5   
653RF999.03606054        3520221025.4   
0.5191RA300.0251211.55.515.01904M3  3.429.98.210.13   
0.8119RA299.08812.311.55.514.54904M4  4.576.621.00.21   
196RA301.59101211520.81303M4  4.587.952.40.26   
1159RA499.51101211524.761504M4  4.587.952.40.43   
1.5106RD499.51152018.5824.761504M561062201381.07   
1.5212RD999.03152018.5849.511806M561062201382.14   
280RD502.652025231026.331504M671173912461.78   
2160RD1005.312025231052.651806M671173912463.58   
2.564RD502.65253027.51226.331504M88.61496113842.64   
2.5128RD1005.31253027.51252.651806M88.61496113845.31   
353RD499.513035321424.761504M1010.817.5118795533.63   
3106RD999.033035321449.511806M1010.817.5118795537.32   
440RD502.654045411826.331504M1213201415609836.21   
480RD1005.314045411852.651806M12132014156098312.6   
532RD502.655050452031.332203M1415.22316244015408.56   
564RD1005.315050452062.652205M1415.223162440154017.2   
626RD490.096060542325.042203M1617.526183520221012.0   
653RD999.036060542359.512205M1617.526183520221024.6   
Product Precautions
[Precaution on J Series Products]  ①Since J series are available-on-request products, it requires a lead-time within 2 working-days (excludes the day ordered), after placing an order. Number of products we can handle for one order is 1 to 20 units. In case of ordering products over 20 units, we shall submit a quote.

[Caution on Product Characteristics]  ①The allowable forces shown in the table are the calculated values according to the assumed usage conditions. Please see Selection Hints for more details
 ②The backlash value of a rack is calculated from the addition of 1/2 the backlash of the mating pinion and the value shown in the table “Backlash of Amount of Tooth Thinning”.
 ③After attaching the racks to the base, please fasten with dowel pins. Clamping only by mounting screws could possibly cause the screws to be broken, due to the heavy load.

[Caution on Secondary Operations]  ①Please read “Cautions on Performing Secondary Operations”when performing modification and/or secondary operations of Racks. Haguruma Kobo, the KHK's system for quick modification of KHK stock gears is also available.
 ②Due to gear teeth induction hardened, no secondary operations can be performed on tooth areas including the bottom land (approx. 2 to 3 mm).Please use wire cutters or other carbide tools to modify the length.
  Please click here to Unit Price & Delivery Time.