... bearing,Block pillow bearing, Auto bearing Retainer:copper cage,nylon retainer,steel retainer,bakelite retainer, etcMaterial:chrome steel,stainless steel,bearing steel Suffixes ... ,the taper is 1:30W33: With lubrication groove in outer ring,with three oil holesC2/C3/C4: ... : C2,C0,C3, and C4 products sample products in the factory technical contral contact usCompanyTianJin NaBoRui Mechanical Equipment ...