Sage Journals: Discover world-class research

Abstract

Experimental apparatus has been developed and used to study the friction characteristics of an externally pressurized air-lubricated journal bearing. The effects of variations in speed, load, diametral clearance, and inlet pressure have been studied over a wide range at high speeds. The experimental friction coefficients have been compared with those given by the well-known Petroff (1)^† formula, and a reasonable degree of correlation has been found.

Bearing air consumption has been measured and a linear relationship between air-mass flow and inlet pressure is indicated. Curves relating load-carrying capacity to various ratios of inlet pressures are included, the applied loads being carried by hydrostatic flotation in all cases.

The bearings used were plain, cylindrical bushes of diameter in. and length in. Compressed air was admitted through three sets of radial-inlet holes around the bush circumference, pressures being adjusted to keep the shaft and bush as close to concentric as possible.

Get full access to this article

View all access options for this article.

References

Petroff

1883 Engng J., St. Petersburg, Nos. 1-4, pp. 71, 228, 337, 535, ‘Friction in Machines and the Effect of the Lubricant’ (in Russian). 1900 Rev. Mécan., vol. 7, p. 571.

Kingsbury

1897 J. Amer. Soc. nav. Engrs, vol. 9, p. 267, ‘Experiments with an Air-lubricated Journal’.

Sasaki

Mori

1951 Mem. Fac. Engng, Kyoto Univ., vol. 13, No. 1, ‘On the Characteristics of Airbearing’.

Sasaki

Mori

1954 Mem. Fac. Engng, Kyoto Univ., vol. 16, No. 2, ‘On the Characteristics of Airbearing’ (Succeeding Report).

Shires

G. L.

1949 N.G.T.E. Memor. No. M.49, ‘Experiments with an Air-lubricated Journal Bearing’. 1949 N.G.T.E. Rep. No. R61, ‘On a Type of Airlubricated Journal Bearing'.

Drescher

1953 Z. Ver. dtsch. Ing., vol. 95, No. 35, p. 1182 (in German). 1954 Engrs’ Dig., vol. 15, No. 3, p. 103, ‘Air Lubricated Bearings'.

Harrison

W. J.

1913 Trans. Camb. phil. Soc., vol. 22, No. 3, p. 39, ‘The Hydrodynamical Theory of Lubrication, with Special Reference to Air as a Lubricant’.

Sugimoto

1951 Trans. Japan. Soc. mech. Engrs, vol. 17, No. 63, p. 12, ‘The Theory of Air Bearing’.

Katto

Soda

1952 Proc. Second Japanese Nat. Congr. appl. Mech. National Committee for Theoretical and Applied Mechanics, p. 267, ‘Theory of Lubrication by Compressible Fluid with Special Reference to Air Bearing’.

10.

Constantinescu

V. N.

1956 Acad. Rep. pop Rom. Rev. Mécan. appl., vol. 1, No. 1, p. 141, ‘On the Theory of Gas Bearings’ (in French).

11.

Ausman

J. S.

1957a Trans. Amer. Soc. mech. Engrs, vol. 79, p. 1218, ‘The Fluid Dynamic Theory of Gas-lubricated Bearings’.

12.

Ausman

J. S.

1957b Proc. Conference on Lubrication and Wear, London, p. 39, ‘Finite Gas-lubricated Journal Bearing’ (Instn Mech. Engrs.).

13.

Golubev

1939 J. Phys., Moscow, vol. 1, No. 3, ‘Viscosity of Gases and Gaseous Mixtures at High Pressures’.

14.

Taylor

G. I.

1923 Phil. Trans., vol. 223, p. 289, ‘Stability of a Viscous Liquid Contained Between Two Rotating Cylinders’.

15.

Cole

J. A.

Kerr

1957 Proc. Conference on Lubrication and Wear, London, p. 164, ‘Observations on the Performance of Air-lubricated Bearings’ (Instn Mech. Engrs.).

16.

Shires

G. L.

1948 N.G.T.E. Memor. No. M.46, ‘The Viscid Flow of Air Through a Narrow Slot’.

17.

Grinnell

S. K.

Richardson

H. H.

1957 Trans. Amer. Soc. mech. Engrs, vol. 79, No. 1, p. 11, ‘Design Study of a Hydrostatic Gas Bearing with Inherent: Orifice Compensation’.

An Experimental Investigation of the Pressurized Air-Lubricated Journal Bearing in the High-Speed Range

Abstract

Get full access to this article

References