| 摘要 |
PROBLEM TO BE SOLVED: To provide a worm reduction gear having a nonslip structure of a first rolling bearing, superior in assembling work efficiency, and capable of simplifying maintenance and management work. SOLUTION: A spacer ring 37 is fitted in a fitting recessed part 41 formed on an inner surface of a housing 7, and a butting part 40 constituting this spacer ring 37 is butted against one end surface in the axial direction of an outer ring 24 constituting the first rolling bearing 21. A retaining ring 38 is locked in a locking groove 45 formed in a part dislocated to one end side in the axial direction from the spacer ring 37 by a part of an inner surface of the fitting recessed part 41 while pressing its one surface to this spacer ring 37. Thus, nonslip of the first rolling bearing 21 can be attained by the retaining ring 38 via this spacer ring 37. COPYRIGHT: (C)2010,JPO&INPIT
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