Automobile Series
Down
Driving System (new energy vehicles)
Material
20CrMnTi, 20CrMnTiH, 20CrMo
Outer diameter tolerance
0.009mm
Runout
0.01mm
Roundness
0.003mm
Perpendicularity
0.02mm
Cylindricity
0.005mm
Surface roughness
Ra 0.4
Spline concentricity
0.06mm(pitch cycle)
Heat treatment
quenching and tempering, nitriding, high frequency quenching
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