Means for lubricating the roll neck/sleeve interface of an oil f

Details Means for lubricating the roll neck/sleeve interface of an oil f Means for lubricating the roll neck/sleeve interface of an oil f

1977-10-11

1979-06-26

Frankfort, Charles E.

Cutlery

72236, 308 9, 308121, F16C 1302

Patent

active

041591526

ABSTRACT:
An oil film bearing for a roll neck in a rolling mill, wherein a sleeve with a tapered bore in mounted on a tapered section of the roll neck for rotation therewith, the sleeve being journalled in a non-rotatable bushing contained in a bearing chock. During rolling, a film of high pressure oil is maintained hydrodynamically between the sleeve and bushing at the bearing load zone. In order to provide lubrication at the roll neck/sleeve interface, a portion of the hydrodynamic oil is bled from the sleeve/bushing interface via holes extending radially through the sleeve into a plurality of longitudinal primary grooves in the sleeve bore. This conventional arrangement is improved by the addition of a plurality of secondary grooves in the sleeve bore. Oil is forced from the primary grooves into the second grooves via connecting grooves in the sleeve bore. The connecting grooves create a pressure differential which opposes reverse flow of oil from the secondary grooves into the primary grooves.

REFERENCES:
patent: 3453031 (1969-07-01), Rickley et al.

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