مكون خارجي لمحمل أسطواني مدبب يوفر سطح اتصال للعناصر الدوارة للمحمل.
medium heavy series,7.4375 in. s shoulder dia,7.9375 in. o shoulder dia special features, 0.1250 inches nominal backface corner radius, 2.1250 inches nominal overall width, steel overall material, 8.3750 inches nominal outside diameter