Product Introduction:

Material: 38CrMoALA
Tempered hardness: HB240-280
Diameter: Φ15-Φ300 mm
L/D ratio：4-35

Nitriding hardness: HV900-1000
Depth of nitriding layer: 0.5-0.6mm
Nitriding brittleness: ≤ Grade 2
Surface roughness: Ra0.4um
Straightness: 0.015mm/m
Inner and outer diameter tolerance: ≤0.02mm
Round runout：≤0.04mm
Total length tolerance of screw: ≤0.03mm
Keyway spline tolerance grade: Grade 7