| 摘要 |
PROBLEM TO BE SOLVED: To improve insufficiency in forming an oil film for obtaining abrasion resistance in oiling from a conventional spiral oil groove in a bearing part of a crankshaft supported by a cantilever bearing in a refrigerant compressor having a reciprocating compression mechanism part used for a relatively small refrigerating unit. SOLUTION: A second oil groove communicating with a spiral oil groove and having the tail end in the anti-rotational direction of a crankshaft is arranged to promote to form an oil film of a bearing part, and even if a refrigerant of an HFC system is used, a refrigerant compressor having high abrasion resistance can be supplied.
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