| 摘要 |
<P>PROBLEM TO BE SOLVED: To compensate differences of thermal expansion and contraction between a shaft and a case body by using a compensation ring member to prevent a preload escape phenomenon of a tapered roller bearing caused by temperature rise. <P>SOLUTION: An outer ring 13 having an outer peripheral face fitted into a stepped hole 12 of a housing 11 and an inner ring 15 fitted into the shaft 14 are provided. Between an outer ring raceway surface 16 of the outer ring 13 and an inner ring raceway surface 17 of the inner ring 15, a plurality of tapered rollers 18 are rotatably supported by a cage 19. An inner ring large end face 15a of the inner ring 15 is made contact with a shoulder part 14a of the shaft 14 and held by the shaft 14. An outer ring large end face 13a of the outer ring 13 is held by a shoulder part 12a of the stepped hole 12 of the housing 11 via a compensation ring 21. The compensation ring 21 is constituted by a belleville spring or wave spring, has a function to compensate the differences of thermal expansion and contraction between the housing 11 and the shaft 14, and is made contact with and held by a recessed part 23 defined by the outer ring large end face 13b of the outer ring 13 and the shoulder part 12a of the stepped hole 12. <P>COPYRIGHT: (C)2007,JPO&INPIT |
