Bearing for a heated roll

Details Bearing for a heated roll Bearing for a heated roll

1994-06-09

1995-01-17

Hannon, Thomas R.

Bearings

Rotary bearing

Fluid bearing

384100, 384905, F16C 3206

Patent

active

053820967

ABSTRACT:
A bearing for a heated calendar roll comprises a bearing ring having a first surface. The bearing is rotatable about an axis. A first radially fixed hydrostatic bearing arcuate segment has a first surface which mates with the first surface of the bearing ring. The hydrostatic bearing has at least one bearing pocket. The bearing pocket has a device for permitting hydraulic fluid to flow into the at least one bearing pocket. The hydrostatic bearing is disposed substantially at a circumferential position with respect to the bearing which corresponds to a bearing load from the calendar roll. A second hydrostatic bearing arcuate segment has a first surface which mates with the first surface of the bearing ring. The second hydrostatic bearing has a first radially adjustable bearing pocket. The radially adjustable bearing pocket has a device for permitting hydraulic fluid to flow into the radially adjustable bearing pocket. The second hydrostatic bearing is disposed substantially diametrically opposite to the first hydrostatic bearing. A running gap is formed between the first surface of the first hydrostatic bearing and the first surface of the bearing ring. The running gap has a gap height which varies from a middle of the running gap toward an edge of the running gap such that at the beginning of a heating cycle, the middle gap height is less than the edge gap height, and in a heated state of the calendar roll the middle gap height is greater than the edge gap height.

REFERENCES:
patent: 3909080 (1975-09-01), Hallnor et al.
patent: 4175800 (1979-11-01), Chaffee et al.
patent: 4530227 (1985-07-01), Schlatter et al.

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