[Thermal Refined Racks (KRF・KRFD)] Series list   
diagram
Specifications
Precision grade KHK R 001 grade 4 Surface hardness HB225 - 285
Gear teeth Standard full depth Surface treatment Black oxide
Pressure angle 20° Surface finish Cut
Material SCM440 Datum reference surface for teeth cutting Bottom surface
Heat treatment Normalizing only Modifications Possible
*Precision grade of J Series products corresponds to an 'equivalent'.
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Catalog No.
Module
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
  KRF1.5-500 
  KRF1.5-1000 
  KRF2-500 
  KRF2-1000 
  KRF2.5-500 
  KRF2.5-1000 
  KRF3-500 
  KRF3-1000 
  KRF4-500 
  KRF4-1000 
  KRF5-500 
  KRF5-1000 
 KRFD1.5-500J 
 KRFD1.5-1000J 
 KRFD2-500J 
 KRFD2-1000J 
 KRFD2.5-500J 
 KRFD2.5-1000J 
 KRFD3-500J 
 KRFD3-1000J 
 KRFD4-500J 
 KRFD4-1000J 
 KRFD5-500J 
 KRFD5-1000J 
1.5106RF499.51152018.5        35297.21.09   
1.5212RF999.03152018.5        35297.22.18   
280RF502.65202523        6251791.82   
2160RF1005.31202523        6251793.63   
2.564RF502.65253027.5        9772872.71   
2.5128RF1005.31253027.5        9772875.43   
353RF499.51303532        14104213.76   
3106RF999.03303532        14104217.53   
440RF502.65404541        25007686.47   
480RF1005.31404541        250076812.9   
532RF502.65505045        391012208.88   
564RF1005.31505045        3910122017.8   
1.5106RD499.51152018.5824.761504M5610635297.21.07   
1.5212RD999.03152018.5849.511806M5610635297.22.14   
280RD502.652025231026.331504M671176251791.78   
2160RD1005.312025231052.651806M671176251793.58   
2.564RD502.65253027.51226.331504M88.61499772872.64   
2.5128RD1005.31253027.51252.651806M88.61499772875.31   
353RD499.513035321424.761504M1010.817.51114104213.63   
3106RD999.033035321449.511806M1010.817.51114104217.32   
440RD502.654045411826.331504M1213201425007686.21   
480RD1005.314045411852.651806M12132014250076812.6   
532RD502.655050452031.332203M1415.22316391012208.56   
564RD1005.315050452062.652205M1415.223163910122017.2   
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.
 ②For J series products, no black oxide is repeatedly applied after adding secondary operation on mounting hole.

[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”.

[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.
 ②Having a decarburized layer (approx. 0.5mm thickness) on the rectangular surfaces, the tooth tips cannot have the hardness you designate, if induction hardening is applied.
  Please click here to Unit Price & Delivery Time.