Thrust bearing or axial journal bearing, in particular for slow-running machines
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United States of America Patent
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Dec 6, 1988
Grant Date -
N/A
app pub date -
Jun 12, 1987
filing date -
Jun 12, 1986
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A thrust or journal bearing which is suitable for use in particular in slow-running machines is intended to have as large as possible a bearing surface with a minimum diameter and at the same time to have optimal running properties and long life in normal operation, as well as good emergency running properties in the event of oil deficiency. Here a base body 2, e.g. a ring or a ring sector, bears sliding shoes 3 disposed in a uniform distribution peripherally and radially, on which is supported a plant bearing surface above a supporting film of lubricant. The sliding shoes 3 have an outline at least approximating to that of a square and are located congruently to each other on predetermined pitch circles d.sub.0, d.sub.1, d.sub.2 . . . d.sub.x of the base body 2. The side length of the sliding shoes 3 increases from the interior to the exterior proportionately to the increase in the pitch circle diameter d.sub.0, d.sub.1, d.sub.2 . . . d.sub.x and the adjacent sliding shoes 3 are in each case delimited from each other by fluted or grooved profiles 7, 7', 7'. Two groups 7' and 7' of fluted or grooved profiles 7 run spirally, and the directions of curvature of them are counter to each other. They are preferably in each case in the shape of a logarithmic spiral.
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