... GB/T307.1-2005/ISO492-2002 Dalian Bearing DesignationsPrincipal Dimensions (mm)Basic load rating (kN)Speed ratings (rpm)Weight (kg) dDBDynamic ... id 35 mm to OD 1600 mm(3) series:71900, 7000,7200, 7300, 71800 series(4) structure:AC, C, B , with contact angle ... box/Outer wooden case(2) For OD above 250 mm: Wrapped with water-proof belt then put in wooden case4. delivery time ...