Bearings – Rotary bearing – Antifriction bearing
Patent
1999-04-14
1999-11-30
Hannon, Thomas R.
Bearings
Rotary bearing
Antifriction bearing
384536, 384537, F16C 3376, F16C 3507
Patent
active
059930691
ABSTRACT:
A low friction shielded bearing assembly for supporting a machine shaft, for example a spindle shaft of a food cutting machine, includes a rolling element radial and thrust bearing subassembly containing ball or roller elements supported between inner and outer relatively rotatable bearing races with seal elements for retaining lubricant within the bearing subassembly. A flanged, fretting and corrosion resistant sleeve is fixed within the inner race of the bearing subassembly with the flange of the sleeve shielding an adjacent bearing seal against direct impingement by sprayed cleaning fluids. The sleeve also transmits radial and thrust loads to the inner race. The bearing subassembly is retained within an annular retainer that is adjustably attached to a machine frame to permit adjustment of the location of the rotational axis of a shaft supported by the bearing and to permit adjustment of the bearing location axially along the shaft and relative to the machine frame. A secondary journal bearing may be provided as a backup to the ball or roller bearing subassembly in the event of a failure of the rolling element bearing and also to enable alignment of a shaft during assembly and disassembly of the shaft relative to the bearing assembly. The journal bearing normally does not contact the shaft during normal operation of the bearing assembly.
REFERENCES:
patent: 3897988 (1975-08-01), Dickinson et al.
patent: 4063066 (1977-12-01), Nagoshi
patent: 4707150 (1987-11-01), Graham
patent: 4854751 (1989-08-01), Grassmuck et al.
patent: 5125755 (1992-06-01), Adler et al.
Arrasmith Paul E.
Chester James W.
Cole Eugene H.
Hannon Thomas R.
Urschel Laboratories Incorporated
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