一種特殊的單列或多列滾子軸承,剛性或自調心,並採用內螺紋、空心、梅花螺紋或實心軸構造。
nha is fourth shaft special features, grooved race surface, banded od style designator, roller bearing part name assigned by controlling agency, 3830-01-538-1421, winch attachment, single drum, model pa80 end item identification