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。
hardness rating rockwell c scale 58 min special features, steel comp e52100 overall material, 0.2690 inches minimum and 0.2710 inches maximum overall length, 0.2178 inches minimum and 0.2179 inches maximum rolling element diameter, aisi 52100 assn std single material response overall material document and classification