Patent ID: 6672679
Filing Date: 2004-01-06
Classification: B60B,F16C,Y10T

Abstract:
A method of manufacturing a bearing unit, including:a stationary ring having a stationary-side raceway surface provided at a stationary-side periphery thereof, and fixedly supported by a suspending apparatus under a condition of being used; a rotary ring having a rotary side-raceway surface provided at the rotary side-periphery thereof and hardened by a heat treatment; a plurality of rolling elements provided between the rotary side-raceway surface and the stationary-side raceway surface; a mounting flange provided at the outer periphery of the rotary ring, for fixedly connecting a rotary body for braking and a wheel to a mounting surface which is one side surface thereof under a condition of being used, said mounting flange having plural mounting holes communicating between the one side surface and the other side surface; and a plurality of studs, each of which has a distal end protruded from the mounting surface under a condition where the respective base portions thereof are press-fitted into plural mounting holes of the mounting flange, the method comprising: hardening the rotary side-raceway surface of the rotary ring by a heat treatment; press-fitting the base portion of each stud into each hole of the mounting flange to fix the stud therein; processing the mounting surface of the mounting flange into a predetermined configuration; and processing the rotary side-raceway surface into a predetermined configuration and dimension by utilizing the processed mounting surface as a reference surface.