Preparations Before Installation Of Rolling Bearings

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

(2) If there are bruises, burrs, rust spots or solid particles (such as grinding debris, sand, soil) on the assembly surface of the shaft and seat hole, it will not only make it difficult to install the bearing and make the installation position incorrect, but also solid particles If it falls into the bearing, it will play a grinding role. When the bearing rotates, it will wear or scratch the working surface of the bearing. Therefore, 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, raised scratches, and rust spots, and polish it with a fine emery cloth, and clean solid particles, dirt, etc.

(3) The assembly surface should be cleaned with clean gasoline, kerosene, toluene or xylene and other solutions, wiped dry with a clean rag, and then coated with a thin layer of lubricating oil, which can make the installation and operation more convenient.

(4) Open the bearing package just before installation, immerse it in the above gasoline and other liquids and turn it gently by hand to ensure that the package oil on the cage, rolling body and raceway surface is thoroughly cleaned.

(5) When cleaning a large number of bearings, first scald them with hot engine oil at a temperature of 90-100°C to melt the packaged oil, and at the same time dig out all the old oil with a tool that has no sharp edge and no chip shedding, then scald it for a few minutes, and then Rinse with kerosene to remove oil, and finally rinse with gasoline. After cleaning, wear film gloves and place the bearing on a clean cloth or paper on the workbench to dry.

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