BEARING DEVICE FOR DRIVE WHEEL

摘要

PROBLEM TO BE SOLVED: To provide a hardening pattern optimum for a bearing device for a drive bearing provided with a wheel bearing part and a constant velocity universal joint and transmitting rotation of an outer joint member 50 of the constant velocity universal joint part to an inner member 40 of the wheel bearing part. SOLUTION: A serration shaft part 57 which is fitted in the inner member 40 is formed by quench-hardening a stem part 54 of the outer joint member 50. Non hardened part is left on a end part and the inner member 40 and the outer joint member 50 are joined by caulking 54" the end part thereof. COPYRIGHT: (C)2007,JPO&INPIT