Abstract: A wheel speed sensing device with shape-coupled sensor and exciter ring components reduces the effects of tolerance stack variances in the relative radial and axial locations of the sensor and exciter ring. Additionally, the assembly is readily adapted to installation within the sealed confines of the bearing area of a wheel.

Abstract: A powered wheel bearing has a solid spindle supported within a stationary hub by two rows of bearing balls. The innermost ball row has a separable race that is fixed in place by an abutting keeper ring that sits in an adjacent groove. The keeper ring, in turn, is prevented from dislodging by an overlaying shoulder on the sleeve of a CV joint that fits over the end of the spindle with interengaging splines. The joint sleeve is fixed to the spindle by an internal snap ring, so the motion of inserting the sleeve over the spindle is all that is necessary, both for attachment and alignment. The outside of the sleeve also carries regular teeth that provide the encoder ring for a speed sensor.

Abstract: A serviceable ABS wheel speed sensor uses the permanent magnet both to provide an efficient magnetic circuit and to provide part of the retention force that retains a stator subassembly and a sensor subassembly together. The stator subassembly is a plastic end cap that seals one end of the wheel bearing, and has an annular steel web molded into it. A permanent magnet is located behind the web. The sensor subassembly is a plastic plug that fits into the end cap, and has a sensor coil with a steel plate in front abuttable with the stator subassembly web. When the two are assembled, the web and plate are pulled and retained together by the magnet. The coil and magnet are also thereby located proximate to spinning exciter teeth on one of the bearing races to provide an efficient magnetic circuit and strong signal.