| 摘要 |
PROBLEM TO BE SOLVED: To omit a seal member, to reduce the cost, and to improve assembling workability of a sensor unit 42 when the sensor unit 42 is screwed with a cover 18a. SOLUTION: A recessed part 49 with a stage that does not penetrate is disposed in the cover 18a supported by an outer ring 1 that does not rotate even in use. A nut 52 is welded and fixed to the inside of the recessed part 49 with the stage, and a bolt 53 is screwed and fastened to the nut 52 via a through hole 59 disposed in a part of the sensor unit 42 including a sensor section, thereby connecting the sensor unit 42 to the cover 18a. COPYRIGHT: (C)2007,JPO&INPIT
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