Standard Tolerance Chart for Taper Rollers

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PARAMETER

TOLERANCE

GROUND

SUPER FINISH

Diameter variation dwith reference to master roller (within Container)

 

±5  µm

3µm grouping

Angle Variation with reference to master roller (measuring direction higher dia to smaller dia)

 

±4 µm

±3 µm

Length Variation (L) (Total bend)

 

200µm

≤ 200µm

End face Runout

 

≤ 10 µm

≤ 10 µm

Surface Roughness on OD (Ls line, Gauss filter, 0.25 cut off length)

 

≤ 0.20 µm Ra

≤ 0.20 µm Ra

Surface Roughness on End Face (LS line, Gauss Filter, 0.25 cut off length)

 

≤ 0.2 µm Ra

≤ 0.2 µm Ra

Out of round on LS Circle with 1.500 UPR filter at 25% roller length

 

≤ 1.50 µm

≤ 1 µm

Logarithmic crowning on O.D.

 

 

As per customer requirements

End Face Radius

 

± 6 % R

± 6% R

Hardness in HRC (as per specification)

 

± 2 HRC

± 2 HRC

Corner  Radius (R1 & R2)

 

± 0.20 mm

± 0.20 mm

Corner Radius Distance

 

± 0.20 mm

± 0.20 mm

Dimple Diameter Outer (D)

 

± 0.20 mm

± 0.20 mm

Dimple Diameter inner (D)

 

± 0.20 mm

± 0.20 mm

Dimple Depth (Dp)

 

-0.10 mm/

+0.20 mm

-0.10 mm/

+0.20 mm