1, the bearing must be installed in a dry, clean environment conditions. Before installation should check carefully with the axis and the shell surface, convex shoulder end, grooves and connecting surface processing quality. All surfaces must be carefully cleaned with connection and remove the burrs, not casting processing surface must be the net sand. 2, bearing installation should be preceded with petrol or kerosene to clean, dry after use, and ensure good lubrication, bearing the general use of grease lubrication, oil lubrication can be applied. With grease lubrication, should be used without impurities, oxidation, rust, extreme pressure grease such as superior performance. Amount of grease filled bearings and bearing box volume of 30%-60%, not too much. With grease has been filled with good sealing structure of double row tapered roller bearings and water pump bearings, users can directly use, no further cleaning. 3, bearing installation, must be applied equally in the circumference of ferrule end face pressure, will press into the ring, not used