ベアリング、ローラー(改造したもの)の転動体を間隔をあけて保持するフレームまたはエンクロージャ。
copper alloy 642 overall material, 2.5210 inches minimum and 2.5240 inches maximum outside diameter, 0.6020 inches minimum and 0.6120 inches maximum overall width, 2.2950 inches minimum and 2.3050 inches maximum bore diameter, qq-c-465,alloy 642 fed spec 1st material response or alloy 954,type 2 or 3 fed spec 2nd material response overall material document and classification