| 摘要 |
PROBLEM TO BE SOLVED: To prevent a generation of a retainer noise and a failure of NRRO of a rolling bearing by imparting strength and rigidity to the retainer such that a deformation caused by force from a rolling body and slide friction force is not generated. SOLUTION: In the retainer 6 relating to an embodiment of the present invention, a whole of the retainer is formed only by a synthetic resin and a synthetic resin having a high elasticity is used for a claw part 3 or the like requiring a high elasticity. Regarding a lower part than a border line L of a body part 7, a resin having strength and rigidity that a deformation caused by force from the rolling body and slide friction force is not generated is used. It is no fear that strength of the whole retainer 6 is reduced caused by use of the resin having a high elasticity for the claw part 3 or the like. The strength of the whole retainer 10 is sufficiently ensured by the body part 7 and various performances of the rolling bearing caused by the retainer are enhanced.
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