Patent ID: 7982455
Filing Date: 2011-07-19
Classification: F16C,G01D,G01P

Abstract:
1. A rolling bearing with a rotational speed sensor, comprising: inner and outer races, one of the inner and outer races being a rotating race and the other of the inner and outer races being a stationary race; a magnetic encoder mounted to said rotating race and comprising a metal core and an annular magnetic member fixed to a magnetic member-mounting surface of said metal core, said magnetic member being magnetized such that different magnetic poles are alternately arranged in a circumferential direction thereof; and a sensor element mounted to said stationary race for detecting changes in magnetic poles when the magnetic encoder rotates, thereby detecting the rotation of the rotating race; wherein said magnetic member comprises a magnetic material and rubber, said rubber binding said magnetic material; wherein said magnetic member is fixed to said magnetic member-mounting surface of said metal core by an adhesive; and wherein an adhesive-receiving recess is formed in said magnetic member-mounting surface of said metal core to receive the adhesive therein.