المكون الخارجي للمحمل الكروي أو الأسطواني والذي يوفر سطح اتصال للعناصر المتدحرجة للمحمل المضاد للاحتكاك.
aisi 52100 assn std single material response overall material document and classification, steel comp e52100 overall material, 0.4160 inches minimum and 0.4200 inches maximum overall width, 1.1307 inches minimum and 1.1310 inches maximum largest bore diameter, 1.3778 inches minimum and 1.3782 inches maximum overall outside diameter