| 摘要 |
PROBLEM TO BE SOLVED: To provide a synthetic resin retainer superior in lubricity and hardly deformed even in a high-speed rotation range.SOLUTION: An engaging hole 44 and an engaging pawl 45 are formed in a connection plate part 43 formed between pocket parts 42 of two synthetic resin waveform retainer half bodies 41 of the same shape. The engaging pawl 45 is engaged with the engaging hole 44 to connect the pair of the waveform retainer half bodies 41. A rib 49 for connecting the adjacent pocket parts 42 is formed on an outer peripheral part of an outside face on the connection plate part 43, to enhance rigidity of the waveform retainer half body 41, while preventing deformation in a high-speed rotation range. A grease guiding hole 52 radially penetrating the rib 49 is formed to improve lubricity. |
