| 摘要 |
PROBLEM TO BE SOLVED: To reduce the interference force and to prevent a holder from breaking by optimally setting the gaps between each section of a holder. SOLUTION: The sum of gaps P1, P1' between a roller 3 and internal faces of pockets of holders 4 at both sides of the roller is set as a pocket gap P. Twice the value of a gap G1 between the holder 4 and its guide face is set as a guide gap G. Twice the sum of a gap R1, between the roller 3 and the surface of the inside diameter of an outer ring and a gap R2 between the roller and the surface of the outside diameter of an inner ring, is set as a radial gap R. When each gap is specified as above, P (pocket gap)/G (guide gap) is set to be not less than 1.0, and R (radial gap)/G (guide gap) to be not less than 0.1.
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