| 摘要 |
PROBLEM TO BE SOLVED: To provide a rolling bearing device with a long life which hardly generates seizure.SOLUTION: A motor compressor comprises: an almost cylindrical housing 1; a rotation shaft 2 coaxially arranged inside the housing 1; and a rolling bearings 10, 10 for rotatably supporting the rotation shaft 2 in the housing 1. One end of the rotation shaft 2 projects outward from an opening 1a of the housing 1, and an impeller 3 for compressing air is mounted to the end of the rotation shaft 2. Furthermore, a sleeve 8 is press-fitted on an inner peripheral surface of the housing 1, and the rolling bearing 10 is arranged on a radial inner side of the sleeve 8. Then, a radial clearance C is provided between an inner peripheral surface of the sleeve 8 and an outer periphery of an outer ring 12 of the rolling bearing 10. Size of the radial clearance C is set so that inclination of the outer ring 12 against the sleeve 8 is 0.0025 rad or less. |
