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Development in Lead Free Polymer Based Bearing for Automotive Parts
Technical Paper
2005-01-1676
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
The bearing is used for the sliding part of automotive parts, for example the brake pedal and the seat. As many of these bearings are aimed for maintenance free, the polymer based bearing that can be used under no lubrication is applied. This bearing material has three layer structures consisting of steel-backing and a porous copper alloy interlayer impregnated and covered with the polymer composite, which consists of poly-tetrafluoroethylene (PTFE), lead and others (1), (2). Lead has the characteristic to form the transferred film of PTFE to the countershaft, and this phenomenon improves the wear resistance. This bearing material shows the excellent bearing performance by the characteristic of lead under no lubrication. However, because lead has been designated as one of the environmental pollutants, the addition to the bearing material is being restricted in recent years. Therefore, lead free polymer based bearing that can be used under no lubrication was developed in this study.
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Authors
Citation
Nakajima, H., Hiramatsu, N., Niwa, T., and Umemura, A., "Development in Lead Free Polymer Based Bearing for Automotive Parts," SAE Technical Paper 2005-01-1676, 2005, https://doi.org/10.4271/2005-01-1676.Also In
Advances in Plastic Components, Processes and Technologies 2005
Number: SP-1960; Published: 2005-04-11
Number: SP-1960; Published: 2005-04-11
References
- Niwa T. et al “Development in Polymer Based Bearing Material for Automotive Shock Absorbers” SAE Paper 2000-01-97
- Tamura H. et al “The Trend of Bush Bearing Materials for Strut Type Shock Absorbers” SAE Paper 920274
- Pratt G. C. “Recent Development in Polytetrafluorethylen-Based Dry Bearing Materials and Treatments” Proc Instn Mech Engrs 181 1966-67