(1) Before the bearing is installed, the processing quality (such as dimensional accuracy, shape accuracy and surface roughness, etc.) of the shaft and the seat hole and related parts should be checked with appropriate measurement tools according to the technical requirements on the design drawings.

       (2) If there are bruises, burrs, rust or solid particles (such as abrasive debris, sand, mud) on the assembly surface of the shaft and the seat hole, not only will the bearing installation be difficult and the installation position is incorrect, but also the solid particles If it falls into the bearing, it will have an abrasive effect. When the bearing rotates, it will abrade or scratch the working surface of the bearing, so it must be carefully checked before installation. If the above defects are found, they should be corrected. For example, use an oil file to remove burrs, bumps, rust spots, and polish with a fine emery cloth, such as cleaning solid particles and dirt.

       (3) The assembly surface should be cleaned with clean gasoline, kerosene, toluene or xylene solutions, and dried with a clean cloth, and then coated with a thin layer of lubricating oil, so that the installation operation is more convenient.

       (4) Open the bearing package at the time of installation, immerse it in the above-mentioned gasoline and other liquids and slowly turn it by hand, to ensure that the packaging oil on the surface of the cage, rolling elements and raceway is thoroughly cleaned.

       (5) When cleaning a large number of bearings, first use hot engine oil with a temperature of 90 to 100 degrees Celsius to drench the package oil, at the same time dig out all the old oil with a tool without a sharp edge and no chips, then drench it for a few minutes, then Rinse the engine oil with kerosene and finally clean it with gasoline. After cleaning, wear film gloves and place the bearing on a clean cloth or paper on the work table to dry.

       (6) Note that bearings with seals cannot be cleaned by this method, and the inside of the seal should be kept as it is and cannot be cleaned.