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TECHNICAL PAPERS

Steady State Performance Characteristics of a Tilting Pad Thrust Bearing

[+] Author and Article Information
Sergei B. Glavatskikh

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

J. Tribol 123(3), 608-615 (Jul 11, 2000) (8 pages) doi:10.1115/1.1308041 History: Received February 17, 2000; Revised July 11, 2000
Copyright © 2001 by ASME
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References

Martin,  F. A., 1970, “Tilting pad thrust bearings: rapid design aids,” Tribology Convention Proc. Inst. Mech. Eng., 184, pp. 120–138.
Ettles,  C. M., and Anderson,  H. G., 1991, “Three-Dimensional Thermoelastic Solutions of Thrust bearings Using Code Marmac 1,” ASME J. Tribol., 113, pp. 405–412.
Gregory,  R. S., 1974, “Performance of Thrust Bearings at High Operating Speeds,” J. Lubr. Technol., 96, No. 1, pp. 7–14.
Capitao,  J. W., 1976, “Performance characteristics of tilting pad thrust bearings at high operating speeds,” J. Lubr. Technol., 98, No. 1, pp. 81–89.
Capitao,  J. W., Gregory,  R. S., and Whitford,  R. P., 1976, “Effects of high operating speeds on tilting pad thrust bearing performance,” J. Lubr. Technol., 98, No. 1, pp. 73–80.
Gregory, R. S., 1977, “Operating Characteristics of a Fluid Film Thrust Bearing Subjected to High Shaft Speeds,” Super Laminar Flow in Bearings, Mech. Eng. Publications, Suffolk, England.
New,  N. H., 1974, “Experimental comparison of flooded, directed, and inlet orifice type of lubrication for a tilting pad thrust bearing,” J. Lubr. Technol., 96, pp. 22–27.
Mikula,  A. M., and Gregory,  R. S., 1983, “A Comparison of Tilting Pad Thrust Bearing Lubrication Supply Methods,” J. Lubr. Technol., 105, No. 1, pp. 39–47.
Mikula,  A. M., 1985, “The Leading-Edge-Groove Tilting-Pad Thrust Bearing: Recent Developments,” ASME J. Tribol., 107, pp. 423–430.
Mikula,  A. M., 1988, “Further Results of the Leading-Edge-Groove (LEG) Tilting Pad Thrust Bearing,” ASME J. Tribol., 110, pp. 174–180.
Gardner,  W. W., 1988, “Tilting pad thrust bearing tests—influence of pivot location,” ASME J. Tribol., 110, pp. 609–613.
Horner,  D., Simmons,  J. E. L., and Advani,  S. D., 1988, “Measurements of Maximum Temperature in Tilting-Pad Thrust Bearings,” STLE Trans., 31, No. 1, pp. 44–53.
Leopard,  A. J., 1976, “Tilting Pad Bearings—Limits of Operation,” ASLE Lubrication Engineering, 32, No. 12, pp. 637–644.
Kettleborough,  C. F., Dudley,  B. R., and Baildon,  E., 1955, “Michell bearing lubrication,” Proc. Inst. Mech. Eng., 169, No. 36, pp. 746–765.
Elwell,  R. C., Gustafson,  R. E., and Reid,  J. C., 1964, “Performance of Centrally Pivoted Sector Thrust-Bearing Pads—Sea Trials Aboard USS Barry (DD 933),” J. Basic Eng., 86, pp. 483–497.
Gardner W. W., 1998, “Tilting Pad Thrust Bearing Tests—Influence of Oil Flow Rate on Power Loss and Temperatures,” Proc. 24th Leeds-Lyon Symp. on Tribology, pp. 211–217.
Mikula,  A. M., 1986, “Evaluating tilting-pad thrust bearing operating temperatures,” ASLE Trans., 29, No. 2, pp. 173–178.
Gregory,  R. S., 1979, “Factors Influencing Power Loss of Tilting-Pad Thrust Bearings,” J. Lubr. Technol., 101, pp. 154–163.
Mikula,  A. M., 1987, “The effect of lubricant supply temperature on the thrust bearing performance,” ASLE Trans., 30, No. 2, pp. 220–224.
Kim,  K. W., Tanaka,  M., and Hori,  Y., 1995, “An experimental study on the thermohydrodynamic lubrication of tilted pad thrust bearings,” Jpn. J Tribology, 40, No. 1, pp. 1–13.
Tanaka, M., Hori, Y., and Ebinume, R., 1985, “Measurement of the film thickness and temperature profiles in a tilting pad thrust bearing,” Proc. JSLE international conf., Tokyo, Japan, pp. 553–558.
Neal, P. B., 1980, “Some Factors Influencing the Operating Temperature of Pad Thrust Bearings,” Proc. 6th Leeds-Lyon Symposium on Tribology, pp. 137–142.
Glavatskikh, S. B., 2000, “Laboratory Research Facility for Testing Hydrodynamic Thrust Bearings,” accepted for publication in Journal of Engineering Tribology, Part J.
Glavatskikh, S. B., 2000, “Transient Thermal Effects in a Pivoted Pad Thrust Bearing,” Proc. 26th Leeds-Lyon Symposium on Tribology.
Yuan,  J. H., Medley,  J. B., and Ferguson,  J. H., 1999, “Spring-Supported Thrust Bearings Used in Hydroelectric Generators: Laboratory Research Facility,” Tribol. Trans., 42, No. 1, pp. 126–135.
Rodkiewicz,  C. M., Kim,  K. W., and Kennedy,  J. S., 1990, “On the Significance of the Inlet Pressure Build-up in the Design of Tilting-Pad Bearings,” ASME J. Tribol., 112, pp. 17–22.

Figures

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Cross section of the test rig
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Location of the instrumentation: bearing mounted (a) and shaft mounted (b)
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Pad temperature distributions for two bearing loads, 1.0 MPa and 2.0 MPa, @1500 rpm (a) and 3000 rpm (b). LE—leading edge; MD—midplane; TE—trailing edge. Number denotes load in MPa.
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Pad temperature distributions for different supplied oil temperatures @1.0 MPa (a) and 2.0 MPa (b). LE—leading edge; MD—midplane; TE—trailing edge. Number denotes supplied oil temperature in °C.
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Pad (T75/75), collar (T75,T25), and shaft (Tc) temperatures as a function of shaft speed (a) and bearing load (b). Oil supplied temperature Tin=40°C.
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Collar (T75,T25), shaft (Tc), and pad (T75/75) temperatures versus load (a) and shaft speed (b). Supplied oil temperatures 30°C and 60°C.
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Power loss and oil film thickness versus bearing load (a) and shaft speed (b). Supplied oil temperature 40°C.
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Oil film thickness and power loss versus bearing load (a) and shaft speed (b). Supplied oil temperatures 30°C and 60°C.
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Influence of supplied oil temperature on power loss and film thickness
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Circumferential film ratio and friction coefficient
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Pressure profiles at different bearing loads, shaft speed −3000 rpm, supplied oil temperature 40°C
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Influence of shaft speed (a) and supplied oil temperature (b) on pressure profiles @2.0 MPa bearing load. Solid lines are for a speed of 3000 rpm (or Tin=30°C in b), dotted and dashed lines are for 1500 rpm (or Tin=60°C in b).

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