1. During installation, if the outer surface roughness of the shaft diameter is low or there are defects such as rust spots, rust, burrs, etc., use a fine emery cloth or oil stone to smooth it; apply clean oil or grease on the oil seal lip or the corresponding position of the shaft diameter. Apply sealant to the outer ring of the oil seal, wrap the keyway on the shaft with hard paper to avoid scratching the lip of the oil seal, and use a special tool to rotate the oil seal inward and press it in. Do not smash hard to prevent the oil seal from being deformed. Or squeeze the spring and fail; if the lip is flanged, the spring falls off and the oil seal is skewed, it must be removed and re-installed. It should be noted that when the shaft diameter is not worn and the oil seal spring has sufficient elasticity, do not tighten the inner spring without authorization.
2. Oil seals used in machinery are generally subject to harsh working conditions, large environmental temperature differences, a lot of dust, and frequent machine vibrations, when the stress conditions of the parts are constantly changing, they should be inspected, maintained and maintained frequently.
3. If the shaft diameter and bearing are seriously worn; the oil seal rubber is aging or the spring is invalid, etc., repair and replace the corresponding parts in time.
4. Troubleshoot abnormally hot parts or assemblies in time; avoid mechanical overspeed and overload operation to prevent oil seal lip temperature rise, rubber aging, and early lip wear.