Wheel bearing apparatus incorporated with a wheel speed...

Details Wheel bearing apparatus incorporated with a wheel speed... Wheel bearing apparatus incorporated with a wheel speed...

2009-07-24

2011-10-25

Pilkington, James (Department: 3656)

Bearings

Rotary bearing

Antifriction bearing

Reexamination Certificate

active

08043010

ABSTRACT:
A wheel bearing apparatus incorporating a wheel speed detecting apparatus has an outer member and an inner member with a wheel hub and at least one inner ring. Double row rolling elements are contained between the inner and outer raceway surfaces of the inner and outer members. A sensor holder, with a wheel speed sensor to detect the wheel speed, is mounted on the end of the outer member. An encoder is mounted on the inner ring and arranged opposite to the wheel speed sensor, via a predetermined air gap. The sensor holder has an annular ring shaped cover and a holding portion of synthetic resin. The wheel speed sensor is embedded in the holding portion. The cover is press-formed of an anti-corrosion steel sheet. The cover has a cylindrical fitting portion fit onto the end of the outer member. A flange portion extends from the fitting portion and is in close contact with the end face of the outer member. A bottom portion further extends radially inward from the flange portion. At least the outer circumference of the end of the outer member onto, where the cover is fit, is anti-corrosion treated.

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