What’s the method for preventing rust of oilless bearing?

oilless bearing can cause rust and other phenomena due to the different environments. If the bearing rusts, it will affect the normal operation of the self-lubricating bearing, resulting in unnecessary losses. So how do you prevent rust from oil-free bearings?

In order to prevent the oilless bearing from rusting, the surface should be pretreated. The cleaning method must be selected according to the nature of the surface of the rust-preventing material and the conditions at that time. Commonly used are solvent cleaning, chemical cleaning and mechanical cleaning. After cleaning, dry it with filtered dry compressed air, or dry it with a dryer at 120~170 °C, or dry it with clean gauze.

In addition, in order to prevent the oilless bearing from rusting, anti-rust oil can also be applied. Some small items are immersed in anti-rust grease to adhere a layer of anti-rust grease to the surface of the self-lubricating bearing. The oil film thickness can be achieved by controlling the temperature or viscosity of the rust preventive grease. For outdoor construction equipment or special-shaped products that are not suitable for soaking or spraying, self-lubricating bearings should be brushed with care not to accumulate, but also to prevent leakage.

Some large rust preventives cannot be oiled by immersion, and are generally sprayed in an air clean place with filtered compressed air at a pressure of about 0.7 MPa. The spray method is suitable for solvent-diluted anti-rust oil or thin-layer anti-rust oil, but it must adopt perfect self-lubricating bearing fireproof and labor protection measures. It is necessary to prevent rusting of oilless bearing.