Results 171 to 180 of about 803 (215)

THE APPLICATION OF POROUS METAL BEARINGS

Industrial Lubrication and Tribology, 1972
POROUS metal bearings are produced by partial compaction of metal powders in precision tools of the desired shape followed by the sintering of the powder compact in a reducing atmosphere at a temperature of about 80% of the absolute melting point of the metal.
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Lubrication of a Porous Bearing—Reynolds’ Solution

Journal of Applied Mechanics, 1966
The problem of lubrication of a journal in a porous bearing is considered. A Reynolds equation modified to accommodate mass transfer with the fluid-saturated bearing is solved, and the influence of the permeability and radius ratio of the bearing is examined.
C. C. Shir, D. D. Joseph
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Investigation of the process of calibrating porous bearings

Soviet Powder Metallurgy and Metal Ceramics, 1963
1. The calibration conditions — the calibration allowance and the taper angle of the penetrating parts of the calibrating elements, as well as the structure, porosity, and dimensions of the bearings — exert a definite influence on the degree of plastic deformation to which the surface layers are subjected, the magnitude of elastic lag, and the ...
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The optimum profile for a porous slider bearing

Wear, 1978
Abstract The load capacity of a porous slider bearing was investigated. The optimum profile was found to be a step form with the riser location and step height ratio depending on the porosity. Porosity decreases the load capacity of a slider bearing.
P.D.S. Verma, V.K. Agrawal, S.B. Bhatt
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Hydrodynamic lubrication of short porous bearings

Wear, 1972
Abstract A theoretical analysis is presented for the hydrodynamic lubrication of short porous metal bearings that are press-fitted into a solid housing. It is customary with such bearings to neglect the circumferential flow of the lubricant compared to the axial flow and consequently the modified Reynolds equation has a simpler form.
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Externally Pressurized Porous Thrust Bearings

A S L E Transactions, 1976
The use of porous material in the bearing surface of externally pressurized thrust bearings leads to a compact design by eliminating the need for an external restrictor and has other potential advantages. An experimental and theoretical investigation of the performance of such bearings, using liquid lubricants is described: the investigation is limited
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Porous metal bearings — A critical review

Wear, 1980
Abstract The progress to date on various types and aspects of porous metal bearings is critically reviewed. Important potential research areas for further work are discussed.
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Hydrodynamic lubrication of long porous bearings

Wear, 1971
Abstract Analytical solution is attempted for a long porous bearing, press-fitted into the housing and working with a full film of lubricant. The pressure distribution is determined by a simultaneous solution of Reynolds equation for the film and the Laplace equation for the bearing material while maintaining the continuity of pressure at the film ...
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Production and Properties of a New Porous Bearing

1966
The behavior of ordinary bearings is described with varied conditions for geometrical factors, diameter, length, clearance, running speed, and for the oil quality, temperature and load. The essential feature of the new bearings is that they have inside of the bore a layer of ultrafine powder. The manufacturing process is described.
H. Youssef, M. Eudier
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Lubrication of axially undefined porous bearings

Wear, 1970
Abstract A solution of the basic equation of the flow-dynamic lubrication concerning porous bearings under steady radial load is given according to the Morgan and Cameron assumptions, which have been modified because the axial dimension of the bearing is considered as undefined.
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