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。
ams 6276 assn std single material response roller material document and classification, 1.2950 inches minimum and 1.3000 inches maximum overall length, steel roller material, stabilized for operation from m65 deg f to p375 deg f,c59.0 to c63.0 rockwell hardness o/a special features, tapered roller, flat ends style designator