SF-2 Boundary Lubrication Bearings

     Self-lubricating bearings are divided into composite material self-lubricating bearings, solid inlaid self-lubricating bearing shafts, bimetallic material self-lubricating bearings, and special material self-lubricating bearings. According to different uses and working conditions, different self-lubricating bearings are selected.

     SF-2 type material is a three-layer composite self-lubricating material filled with tetrafluoro-modified polyoxymethylene plastic as the surface layer. It is a benign boundary lubricating material, so it is especially suitable for high-load and low-speed rotary motion and rocking motion. As well as bearings, thrust washers, sliders, ball seats and other friction parts that are often opened and closed under load and are not easy to form hydrodynamic lubrication. SF-2 can make full use of micro grease, and can be maintained without oil for a long time under the condition of boundary lubrication. Under the condition of complete oil-free lubrication, SF-2 has low friction performance and allowable PV value, so oil storage pits are usually rolled out on the plastic surface, and lithium-based lubricating grease or silicone grease is applied during assembly.