Thrust bearing

Details Thrust bearing Thrust bearing

1983-12-15

1986-02-04

Footland, Lenard A.

Bearings

Rotary bearing

Hydraulic or pneumatic bearing support

384121, F16C 3206

Patent

active

045682038

ABSTRACT:
The precision rotatable polygonal mirror of a laser scanning system is fixed to one of a pair of spaced flanges of a rotatable shaft, and has one surface supported upon a fixed air bearing. A floating air bearing is formed to define a differential piston which is pressurized to load the bearing and provide the desired air film bearing thicknesses. The two part thrust bearing has a net effective axial dimension that varies to significantly decrease required tolerances, to minimize moments introduced into the shaft and polygonal mirror, and to provide a more constant air bearing clearance over a larger range of air pressures.

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