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TECHNICAL PAPERS

Evaluating Thermal Performance of a PTFE-Faced Tilting Pad Thrust Bearing

[+] Author and Article Information
Sergei B. Glavatskih

Luleå University of Technology, Division of Machine Elements, 971 87 Luleå Sweden

J. Tribol 125(2), 319-324 (Mar 19, 2003) (6 pages) doi:10.1115/1.1506329 History: Received March 06, 2002; Revised July 11, 2002; Online March 19, 2003
Copyright © 2003 by ASME
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References

Leopard,  A. J., 1976 “Tilting Pad Bearings—Limits of Operation,” ASLE Lubrication Engineering, 32 (12), pp. 637–644.
Gardner,  W. W., 1975, “Performance Tests on Six-Inch Tilting Pad Thrust Bearings,” ASME J. Lubr. Technol., 97(3), pp. 430–438.
Gardner,  W. W., 1988, “Tilting Pad Thrust Bearing Tests—Influence of Pivot Location,” ASME J. Tribol., 110, pp. 609–613.
Mikula,  A. M., 1988, “The Effect of Shoe-Backing Material on the Thermal Performance of a Tilting-Pad thrust Bearing,” Lubr. Eng., 44(12), pp. 969–973.
New,  N. H., 1974, “Experimental Comparison of Flooded, Directed, and Inlet Orifice Type of Lubrication for a Tilting Pad Thrust Bearing,” ASME J. Lubr. Technol., 96, pp. 22–27.
Mikula,  A. M., 1985, “The Leading-Edge-Groove Tilting-Pad Thrust Bearing: Recent Developments,” ASME J. Tribol., 107, pp. 423–430.
Soifer, A. M., Kodnir, D. S., and Baiborodov, Yu. I., 1965, “Elastic Sliding Bearing on a Base of Resilient Deformable Material Combined With Fluoroplastic,” Izvestia VUZov, Mashinostroenie, 7 , pp. 67–69 (in Russian).
Aleksandrov, A. E., 1981, “Use of the Elastic Metal-Plastic Pads With a PTFE Coating of Friction Surfaces in Thrust Bearings of Hydrogenerators,” Gidrotekhnicheskoe stroitel’stvo, 9 , pp. 12–14 (in Russian).
Simmons,  J. E. L., Knox,  R. T., and Moss,  W. O., 1998, “The Development of PTFE (Polytetrafluoroethylene)-Faced Hydrodynamic Thrust Bearings for Hydrogenerator Application in the United Kingdom,” Proc. Inst. Mech. Eng., Part J: J. Eng. Tribol., 212, Part J, pp. 345–357.
Uno,  S., , 1997, “Overview of Recent Tendencies in Thrust Bearings for Hydrogenerators,” Japanese Journal of Tribology, 42 (2), pp. 205–216.
Baiborodov, Yu. I., et al., 1977, “Operating Experience With Elastic Metal-Plastic Pads in a Thrust Bearing Unit N 9 of Volga Hydropower Station Named After V. I. Lenin,” Gidrotekhnicheskoe stroitel’stvo, 10 , pp. 28–31 (in Russian).
Aleksandrov, A. E., and Platonov, N. G., 1990, “On-Site Investigations of the Work of Thrust Bearings With Elastic Metal-Plastic Pads at a High Oil Temperature,” Gidrotekhnicheskoe stroitel’stvo, 11 , pp. 20–24 (in Russian).
Akagaki, T., Kawabata, M., and Kato, K., 2000, “Lubricated Wear of PTFE-Based Composite at High Sliding Speed,” Proc. Intern Tribology Conf., Nagasaki, Japanese Society of Tribologists, pp. 917–922.
Glavatskih,  S. B., 2002, “Laboratory Research Facility for Testing Hydrodynamic Thrust Bearings,” Proc. Inst. Mech. Eng., Part J: J. Eng. Tribol., 216, pp. 105–116.
Mikula,  A. M., 1986, “Evaluating Tilting-Pad Thrust Bearing Operating Temperatures,” ASLE Trans., 29(2), pp. 220–224.
Ettles,  C. M. McC, 1980, “Size Effects in Tilting Pad Thrust Bearings,” Wear, 59, pp. 231–245.
Markin D., McCarthy, D., and Glavatskih, S., 2002, “A FEM Approach to Simulation of Tilting Pad Thrust Bearing Assemblies,” in Proceedings of the 10th International Conference on Tribology NORDTRIB 2002, The Royal Institute of Technology, Stockholm, Sweden.
Baudry,  R. A., and Reilly,  D. N., 1991, “Shedding Light on Hydroelectric Thrust Bearings Problems,” Hydro Rev., pp. 126–135.
Glavatskih,  S. B., Fillon,  M., and Larsson,  R., 2002, “The Significance of Oil Thermal Properties on the Performance of a Tilting-Pad Thrust Bearing,” ASME J. Tribol., 124, pp. 377–385.

Figures

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Photograph of the PTFE-faced bearing
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Thermocouple locations in the bearings tested
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Schematic of the test rig
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A typical T75/75 temperature distribution around the bearing. Shaft speed 2000 rpm, specific bearing load 2.0 MPa
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Temperature rise along the pad central line for 0.5 MPa specific bearing load and 1500/3000 rpm shaft speed
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Temperature rise along the pad central line for 2.0 MPa specific bearing load and 1500/3000 rpm shaft speed
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Temperature profiles along the pad trailing edge for 2.0 MPa specific bearing load and 1500/3000 rpm shaft speed. Radial position is a ratio of a current radius to the inner radius of the pad.
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Pad T75/75 and collar T75 temperatures versus shaft speed for 2.0 MPa specific bearing load. T0-oil temperature at the bottom of the PTFE-faced pad.
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Pad T75/75 and collar T75 temperatures versus specific bearing load for 3000 rpm shaft speed. T0-oil temperature at the bottom of the PTFE-faced pad.
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Power loss versus shaft speed for 1.0 and 2.0 MPa specific bearing loads
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Power loss versus specific bearing load for 1500 and 3000 rpm shaft speeds

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