JOHN A BJORK
Engineering in Worcester, MA
License number
Massachusetts 15434
Expiration Date
Jun 30, 1984
Type
Mechanical Engineer
Address
Address
Worcester, MA 01605
Professional information
Means For Lubricating The Roll Neck/Sleeve Interface Of An Oil Film Bearing
US Patent:
4159152, Jun 26, 1979
Filed:
Oct 11, 1977
Appl. No.:
5/841167
Inventors:
John A. Bjork - Worcester MA
Assignee:
Morgan Construction Company - Worcester MA
International Classification:
F16C 1302
US Classification:
308240
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.