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Product description
PARAMETERS OF INNER BALL CAGE:
Grain size≥grade 6
Metallic flow line continuous distribution in axial direction along the

profile
Ball path taper degree≤0.05 Diameter differential on the same section≤0.03
De-carbonization layer (55≤0.05,20CrMnTi≤0.07)
bore rouhness Ra0.8-1.6
No crack on both internal and external surfaces