| 摘要 |
PROBLEM TO BE SOLVED: To prevent first to third cylindrical surfaces 22, 17 and 18 forming power transmission surfaces from being easily damaged when assembled. SOLUTION: A wedge roller 11 and each guide roller 10a are freely insertable in an outer ring 15a while the wedge roller 11 is retracted by a jig 45. The dimensions of each component are regulated therefor.
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