一種特殊的單列或多列滾珠軸承,剛性或自調心,採用實心或空心軸構造,具有內部或外部螺紋。
66 fed std single material response ball material document and classification, mil-g-81322 mil spec single material response lubrication material document and classification, self-aligning alignment type, grease lubrication material, contact bearing seal type