External Diameter Accuracy : f8
Surface Roughness : max Ra 0.2μm
Surface Hardness : min HV 850
Roundness : tolerance × 1/2
Hard Chrome Thickness: <Φ22.225mm: min 15 μm
≧Φ24mm: min 20 μm
Standard Length: 2M - 6M up
Steel Grade: JIS STKM13C, STKM11A, STKM13A, JIS S45C, SAE1045, DIN CK45, EN C45E, ASTM 1045, EN 19