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TECHNICAL PAPERS

Increased Wear Resistance of Roller Bearings Using Me-C: H Coated Rollers

[+] Author and Article Information
Ulf Olofsson

Department of Machine Design, S-100 44 Stockholm, Sweden

Hans Sjöström

Sjöström Coating Consulting, Karlgustavsgatan 21 A, S-411 25 Göteborg, Sweden

Ulf Sjödin

Hägglunds Drives AB, S-890 42 Mellansel, Sweden

J. Tribol 122(4), 682-688 (May 08, 2000) (7 pages) doi:10.1115/1.1310559 History: Received August 03, 1999; Revised May 08, 2000
Copyright © 2000 by ASME
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References

Olofsson,  U., 1997, “Characterization of Wear in Boundary Lubricated Spherical Roller Thrust Bearings,” Wear, 208, pp. 194–203.
Olofsson,  U., 1997, “Fatigue Life Reduction Due to Wear in Boundary Lubricated Spherical Roller Thrust Bearings,” Wear, 207, pp. 74–78.
Olofsson,  U., 1997, “An Experimental Investigation of Wear and Fatigue Life Reduction of Boundary Lubricated Spherical Roller Thrust Bearings,” Tribol. Int., 30, pp. 685–692.
Fitzsimmons,  B., and Clevenger,  H. D., 1977, “Contaminated Lubricants and Tapered Rolling Bearing Wear,” ASLE Trans., 20, pp. 97–107.
Olofsson, U., Björklund, S., and Sundvall, K., 1999, “A Test System for Particle Generated Wear in Rolling/Sliding Contacts,” submitted for publication.
Wan,  G. T. Y., Gabelli,  A., and Ioannides,  E., 1997, “Increased Performance of Hybrid Bearings With Silicon Nitride Balls,” Tribol. Trans., 40, pp. 701–707.
Dimigen,  H., and Hubsch,  H., 1983/84, “Applying Low-Friction Wear Resistant Thin Solid Films by Physical Vapor Deposition,” Philips Tech. Rev., 41, pp. 186–197.
Cuomo,  J. J., Pappas,  D. L., Bruley,  J., Doyle,  J. P., and Saenger,  K. L., 1991, “Vapor Deposition Processes for Amorphous Carbon Films With SP3 Fractions Approaching Diamond,” J. Appl. Phys., 70, p. 1706.
Sjöström,  H., Hultman,  L., Wallenberg,  L., and Sundgren,  J.-E., 1993, “Microstructure of Amorphous C:H and Metal Containing C:H Films Deposited on Steel Substrates,” Thin Solid Films, 232, pp. 169–179.
Olofsson,  U., and Björklund,  S., 1998, “3-D Surface Analysis of Worn Spherical Roller Thrust Bearings,” Int. J. Mach. Tools Manuf., 38, pp. 485–493.
Bengsson,  A., 1994, “Quantitative Depth Profile Analysis by Glow Discharge,” Spectrochim. Acta B, 49B, pp. 411–429.
Sjöström, H., 2000, unpublished results, SKF Coated Bearings, Göteborg Sweden.

Figures

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Schematic of the test rig. Courtesy of Hägglunds Drives AB
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Left—photograph of failed shaft washer from standard bearing (standard rollers) test 2. Right—photograph of non-failed shaft washer from Me-C: H bearing (coated rollers) test 2. The dark bands in the photographs are the zero sliding points.
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Residual terms for Me-C: H bearing, test 1. The rolling direction is parallel with the y-axis.
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Residual terms for standard bearing, test 1. The rolling direction is parallel with the y-axis.
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Housing washer wear test 2. The inner washer diameter is located at 0 in the length axis. Test ended after 250,000 revolutions.
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Housing washer wear test 1. The inner washer diameter is located at 0 in the length axis. Test ended after 800,000 resolutions.
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Housing washer wear test 3. The inner washer diameter is located at 0 in the length axis. Test ended after 58,000 revolutions.
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Housing washer wear test 4. The inner washer diameter is located at 0 in the length axis. Test ended after 58,000 revolutions.
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Number of particles greater than 5 μm and 15 μm versus number of revolution for test 3. 4 mg/l ISO MTD added to the lubricating oil. After each period of 24 h running time the bearing was unloaded and the oil was filtered for one hour through a 3 μm filter. After the filtering period load was applied to the bearing and new particles were injected into the oil.
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Number of particles greater than 5 μm and 15 μm versus number of revolution for test 4. No particles added to the lubricating oil. After each period of 24 h running time the bearing was unloaded and the oil was filtered for one hour through a 3 μm filter.  
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Carbon content versus depth from GD-OES analysis of housing washer surfaces test 2
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Tungsten content versus depth from GD-OES analysis of housing washer surfaces test 2

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