JOHN M BJORK
Social Work in Worcester, MA
License number
Massachusetts 414157
Issued Date
Jul 10, 2015
Expiration Date
Oct 1, 2018
Type
Licensed Social Worker Associate
Address
Address
Worcester, MA 01606
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.