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TECHNICAL PAPERS

Pumping Characteristics of a Herringbone-Grooved Journal Bearing Functioning as a Viscous Vacuum Pump

[+] Author and Article Information
S. Yoshimoto, Y. Ito

Department of Mechanical Engineering, Science University of Tokyo, 1-3 Kagurazaka Shinjuku-ku Tokyo 162, Japan

A. Takahashi

Copal Electronics Co., LTD, 2188 Akami-Cho Sano-City Tochigi, 327-01, Japan

J. Tribol 122(1), 131-136 (Jun 23, 1999) (6 pages) doi:10.1115/1.555371 History: Received February 18, 1999; Revised June 23, 1999
Copyright © 2000 by ASME
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References

Yoshimoto,  S., and Takahashi,  A., 1999, “A Method of Reducing Windage Power Loss in a Laser Scanner Mirror by Using the Pumping Effect of Herringbone-Grooved Gas Journal Bearings,” ASME J. Tribol., 121, July, p. 506.
James,  D. D., and Potter,  A. F., 1967, “Numerical Analysis of the Gas-Lubricated Spiral-Groove Thrust Bearing-Compressor,” ASME J. Lubr. Technol., 89, No. 4, pp. 439–444.
Sato,  Y., Ono,  K., and Iwama,  A., 1990, “The Optimum Groove Geometry for Spiral Groove Viscous Pumps,” ASME J. Tribol., 112, No. 2, pp. 409–414.
Sato,  Y., and Knight,  J. D., 1992, “Performance Characteristics of Shrouded Reyliegh-Step and Spiral Groove Viscous Pumps,” ASME J. Tribol., 114, No. 3, pp. 499–506.
Tanaka,  K., and Muraki,  H., 1991, “Performance of Air-Lubricated Hydrodynamic Bearing Spindles for Laser Scanners,” ASME J. Tribol., 113, No. 3, pp. 609–614.
Whipple, R. T. P., 1958, “The Inclined Groove Bearing,” AERE Report T/T 622 (revised), United Kingdom Atomic Energy Authority, Research Group, Atomic Energy Establishment, Harwell, Berkshire.
Vohr,  J. H., and Chow,  C. Y., 1965, “Characteristics of Herrinegbone-Grooved Gas Journal Bearings,” ASME J. Basic Eng., 87, pp. 568–578.
Burgdorfer,  A., 1959, “The Influence of the Molecular Mean Free Path on the Performance of Hydrodynamic Gas Lubricated Bearings,” ASME J. Basic Eng., 81, No. 1, pp. 94–100.

Figures

Grahic Jump Location
Laser scanner motor with a viscous vacuum pump
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Configuration of viscous vacuum pump with herringbone grooves
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Relationship between time and inner pressure
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Relationship between groove width ratio α and inner pressure
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Relationship between groove angle β and inner pressure
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Shaft configuration used in experiment
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Relationship between time and inner pressure for No. 1 pump
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Relationship between time and inner pressure for No. 2 pump
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Relationship between time and inner pressure (effect of chamber volume)

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