BEARING DEVICE ADAPTED FOR USE IN WHEEL AND PROVIDED WITH ROTATIONAL SPEED DETECTOR

摘要

A bearing device adapted for use in a wheel and provided with a rotational speed detector, in which adverse influence of a wire harness to internal wiring is prevented and in which fixing of the wire harness is simplified so that the bearing device is assembled more easily. A cover (16) of a sensor holder (15) has a hollow circular cylindrical fitting section (16a) press fitted onto the inner end of an outer member (5), a flange (16b) extending radially inward from the fitting section (16a) and made to be in close contact with an end surface (5c) of the outer member (5), and a bottom (16c) extending inward radially from the flange (16b). A fixing section (23) projecting to the inner side from the bottom (16c) is formed at a portion outward radially of the bottom (16c). A cutout (23a) is formed in the fixing section (23), and a holding section (17) is integrally joined to the fixing section (23). A wire harness (27) vertically extends from the holding section (17). The axial gap between a magnetic encoder (22) and the holding section (17) surrounding a rotational speed sensor (28) is set to a range from 0.3 to 2.0 mm.