In order to prevent bearings from rusting during transportation and storage, a thin layer of anti-rust oil is usually applied to the surface of precision bearings when they are packaged. In order to prevent poor bearing lubrication due to incompatibility between lubricating oil or grease and anti-rust oil, it is recommended that precision bearings be carefully cleaned after unpacking. If conditions permit, operators can wear disposable plastic gloves and avoid direct contact with bearings with their hands.

1) Cleaning liquid for bearings should be clean, high-purity gasoline, preferably at least No. 90 gasoline; (2) Bearing cleaning can be completed in two steps. Prepare two clean containers, pour enough cleaning liquid, and place a metal mesh pad in one of the containers. First, soak the bearing taken out of the packaging box in the container with the mesh pad, or use a brush to remove the anti-rust oil film on the bearing surface, and then perform the final cleaning of the bearing in the second container, rotating and cleaning. Note that the cleaning liquid should be replaced in time during the cleaning process to ensure the cleanliness of the cleaning liquid. Sealed bearings should not be cleaned and can be installed and used directly; (3) After cleaning, the bearings should be air-dried or dried naturally. Wait until the residual cleaning fluid on the bearing is completely air-dried before proceeding with the subsequent operations; (4) If the bearing is oil-lubricated, it should be installed without rotating the bearing as much as possible. If the bearing is grease-lubricated, proceed with the subsequent grease filling and installation procedures; (5) In order to facilitate the smooth installation of the bearing, it is recommended to apply a thin layer of lubricating oil on the installation surface of the bearing.