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。
steel comp e52100 overall material, 0.1560 inches minimum and 0.1562 inches maximum rolling element diameter, 0.7300 inches minimum and 0.7500 inches maximum overall length, needle roller, spherical ends style designator, 66 fed std single material response overall material document and classification