| 摘要 |
PROBLEM TO BE SOLVED: To reduce loss in a rolling bearing of a high speed dynamo electric machine and improve vibration restraining function. SOLUTION: Oil supply lines L2, L3, L4 which are continuously connected with an oil supply line L1 formed penetrating a rotating shaft 30 and a load side prolonged part 30a of the rotating shaft, and reach three rolling bearings 3, 3a, 3b, respectively, are formed. Air containing a specified ratio of specified granular oil grains is supplied to the oil supply line L1. It is desirable that the oil supply line is formed in such a manner that squeeze films are formed between spacers 17, 17a, 17b where 0 rings are interposed and specified members, and oil for forming the squeeze films is supplied at a specified pressure.
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