Tribological Properties of Self-Lubricating Sliding Bearings Made of PTFE and POM-Based Composite Materials

Abstract

Self-lubricating sliding bearings made of polymer materials are used when lubrication is impossible due to construction reasons, or lubricant could spoil the product (i.e. in food industry), in chemically active environments which could affect the metal bearings, etc. In this paper there are presented the results of starting tribological tests on self-lubricated sliding bearings made of composite materials with PTFE and POM base. Above mentioned tests were carried using own testing machine USL 5-30 designed for investigation of self-lubricating sliding bearings. In this paper authors are going to present some of starting obtained results, such are friction coefficient and operating temperature trends due to an operating time. Even those are starting investigations for this kind of bearing; authors are going to try to obtain some values of the wear rate for both of materials.