| 摘要 |
PROBLEM TO BE SOLVED: To synchronize all rollers at an integrated state and to enhance an operation stability, an eccentric resistance, a popping prevention and a racing reliability by providing a cage disposed between the rollers so as to maintain the rollers at an equal interval and engaged with a spring member so as to urge the rollers toward an engagement direction. SOLUTION: In a cage 9, an upper surface 9a is opposed to an inner periphery of an outer ring 1 and an outer surface of a suspended portion 9b is opposed to a roller 3. A projection 4c formed on a side plate 4 is inserted below the upper surface 9a of the cage 9 and a spring member 6 is clamped by the suspended portion 9b and a supporting portion 7. By the projection 4c, a lower end of the suspended portion 9b is not contacted with a track surface of the roller 3, the cage 9 is not vertically rattled and is circumferentially smoothly moved. Thereby, all rollers 3 are integrated and synchronized as a whole and the respective rollers 3 are independently moved by a space formed with the cage 9. Accordingly, an urging force of the spring 6 can be transmitted to the roller 3 through the suspended portion 9b of the cage 9.
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