Reluctance between the outer ring suffering base material and the aforementioned inside suffering base material

摘要

PPROBLEM TO BE SOLVED: To provide a rolling bearing device which is suitable for preventing the erroneous detection of a resolver when a radial load has been applied on the rolling bearing device. PSOLUTION: A direct drive motor 100 is composed of a cross roller bearing 14 having an inner race 14a and an outer race 14b, a housing inner 22 which is fitted in the inner circumferential surface of the inner race 14a with a clearance and is supported by the inner race 14a, a rotor 12 which is fitted on the outer circumferential surface of the outer race 14b with a clearance and is supported by the outer race 14b, and a resolver 30 in which the reluctance between the housing inner 22 and the rotor 12 varies according to the position of the rotor 12. Further, the clearance 32a at the fitting surface of the housing inner 22 and the inner race 14a, and the clearance 32b at the fitting surface of the rotor 12 and the outer race 14b are filled with a filler respectively. PCOPYRIGHT: (C)2008,JPO&INPIT