Standard Tolerance Chart for Cylindrical Rollers

PARAMETERS

TOLERANCE

GROUND

SUPER FINISH

Diameter Variation Dwith reference to master roller (Within Container)

 

±5µm

±3µm grouping

Taper Variation

 

±4 µm

±2 µm

Length Variation (L)

 

≤ 200 µm

≤ 20 µm

Face Runout

 

≤ 10 µm

≤ 10 µm

Surface Roughness on OD (Ls Line, 2CR PC filter, 0.25 mm cut off length)

 

≤ 0.20 µm Ra

≤ 0.1 µm Ra

Surface Roughness on End Face (Ls Line, Gauss filter, 0.25 mm cut off length)

 

≤ 0.35 µm Ra

≤ 0.20 µm Ra

Out of round on LS Circle with 1/500 UPR filter at mid of roller length

 

≤ 1.50 µm

≤ 1 µm

Hardness in HRC (as per specification)

 

±2 HRC

±2 HRC

Corner Radius (R1 &  R2)

 

± 0.20 mm

± 0.20 mm

Corner Radius Distances (C1, C2)

 

± 0.20 mm

± 0.20 mm

Logarithmic Crowning (Super Finishing)

 

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As per customer requirements.