| 摘要 |
PROBLEM TO BE SOLVED: To provide a retainer which can prevent the wear of a guide face even if a material which is liable to be worn such as spherical graphite cast iron is employed as a material of the retainer, as in the case of an angular contact ball bearing for a screw compressor.SOLUTION: In a retainer 3 of an inner ring guide type rolling bearing which is guided by contacting with an inner ring 1 during operation, a ratio of a pocket gap with respect to a guide gap of the inner ring 1 is set within a range of 75% to 100% or less, and thus a material which is liable to be worn such as spherical graphite cast iron can be employed. |
