The contact surfaces in a boundary lubricated spherical roller thrust bearing can change form due to sliding and particle generated wear. These form changes can seriously reduce the fatigue life of the bearings. An experimental test series has been performed where this effect was investigated in bearings with metal mixed amorphous carbon, Me-C: H, coated rollers that were tested against bearings with standard rollers. The experimental results show that while the bearings with standard rollers can fail due to wear, the bearings with coated rollers are at the same time almost unaffected by wear. Also the number of particles generated in the contact was significantly less when using coated rollers. There were twice as many self-generated particles when using a standard bearing compared with a coated bearing. The effect of the coating is discussed in terms of surface hardness, coefficient of friction and tribochemical phenomena. [S0742-4787(00)02004-X]
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October 2000
Technical Papers
Increased Wear Resistance of Roller Bearings Using Me-C: H Coated Rollers
Ulf Olofsson,
Ulf Olofsson
Department of Machine Design, S-100 44 Stockholm, Sweden
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Hans Sjo¨stro¨m,
Hans Sjo¨stro¨m
Sjo¨stro¨m Coating Consulting, Karlgustavsgatan 21 A, S-411 25 Go¨teborg, Sweden
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Ulf Sjo¨din
Ulf Sjo¨din
Ha¨gglunds Drives AB, S-890 42 Mellansel, Sweden
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Ulf Olofsson
Department of Machine Design, S-100 44 Stockholm, Sweden
Hans Sjo¨stro¨m
Sjo¨stro¨m Coating Consulting, Karlgustavsgatan 21 A, S-411 25 Go¨teborg, Sweden
Ulf Sjo¨din
Ha¨gglunds Drives AB, S-890 42 Mellansel, Sweden
Contributed by the Tribology Division for publication in the ASME JOURNAL OF TRIBOLOGY. Manuscript received by the Tribology Division August 3, 1999; revised manuscript received May 8, 2000. Associate Technical Editor: M. M. Khonsari.
J. Tribol. Oct 2000, 122(4): 682-688 (7 pages)
Published Online: May 8, 2000
Article history
Received:
August 3, 1999
Revised:
May 8, 2000
Citation
Olofsson, U., Sjo¨stro¨m, H., and Sjo¨din, U. (May 8, 2000). "Increased Wear Resistance of Roller Bearings Using Me-C: H Coated Rollers ." ASME. J. Tribol. October 2000; 122(4): 682–688. https://doi.org/10.1115/1.1310559
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