日本电产公司开发了轴承不使用滚珠的新型电动机。这种电动机采用旋转轴和轴承不接触的“动压轴承”构造。所谓动压轴承构造就是旋转轴或轴承上作了特殊形状的沟槽,沟槽里充填润滑油,旋转时润滑油产生很高的压力而使旋转 Nidec developed a new motor that does not use balls for its bearings. This motor uses a rotating shaft and bearings do not contact the “dynamic pressure bearing” structure. The so-called dynamic pressure bearing structure is made on the rotating shaft or bearing a special shape of the groove, the groove filled with lubricating oil, lubricating oil rotation produces a high pressure to rotate