| 摘要 |
Provided is a constant velocity universal joint in which a boot can be enhanced in durability and compactified, which are achieved by suppressing abrasion of the boot. In the constant velocity universal joint including: an outer joint member (1); an inner joint member (2); a torque transmitting member (3); a shaft (5); and a hoot (6), surface roughness of an outer peripheral. surface (5a) of the shaft (5) satisfies Rsk<0, Rpk<2 μm, and Ra<4 μm.
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