ローラー ベアリングの転動体となる、中実または中空構造の円筒形本体。
needle roller, spherical ends style designator, steel comp e50100 or steel comp e52100 overall material, 0.2500 inches nominal rolling element diameter, 1.7500 inches nominal overall length, 66,aisi/sae e50100 or e52100 fed std single material response overall material document and classification