一種圓柱形裝置,其內圈或外圈繞單排或雙排硬化滾珠轉動,滾珠在兩圈之間滾動順暢,從而最大限度地減少摩擦。對於表面經過特殊研磨以用於雙聯安裝的軸承,請參閱“雙聯滾珠軸承”。不含:機架滾珠軸承。
aviation ground power unit (ag-pu) (including electrical dc 28 v aat 700 amps maximum; ac 115-230 v, 30kv at 400 hz max; ac 110, 60hz at 500 w max; hydraulic 3,300 lbs at 15 gpm max; pneudraulic - 60 lb pm at 40 psi max end item identification