Bushing assembly for preloading a thrust bearing

Details Bushing assembly for preloading a thrust bearing Bushing assembly for preloading a thrust bearing

1983-09-26

1984-12-11

Jillions, John M.

Bearings

Rotary bearing

Antifriction bearing

F16C 2506, F16C 3308

Patent

active

044874600

ABSTRACT:
An improved bushing assembly which includes a housing having a cylindrical bore formed therein. A bushing is engageable in the cylindrical bore of the housing and is journaled onto a rotatable shaft which extends out of the housing so as to be attached to a drive mechanism. The bushing contains a smooth internal bore and has a stepped outer circumferential profile. The profile includes a smooth circular lead-in surface with an external diameter approximately equal to the diameter of the cylindrical bore, a larger diameter surface containing self-tapping threads for positively engaging an inner portion of the housing which surrounds the cylindrical bore, and a collar formed adjacent to the threads and opposite to the lead-in surface. The collar has a tool receiving configuration so as to accept a tool for threading the bushing into the cylindrical bore. A thrust bearing is mounted on the rotatable shaft and is sandwiched between a shoulder on the shaft and the lead-in end of the bushing. By threading the bushing into the cylindrical bore, one is able to obtain a desired preload on the thrust bearing thereby assuring accurate positioning of the rotatable shaft.

REFERENCES:
patent: 933627 (1909-09-01), Courtney
patent: 1232750 (1917-07-01), Amess
patent: 1401349 (1921-12-01), Miquet
patent: 1671682 (1928-05-01), Norris
patent: 1910182 (1933-05-01), Robertson
patent: 2997350 (1961-08-01), Gerner
patent: 3456548 (1969-07-01), Schmidt et al.
patent: 3866510 (1975-02-01), Eibes et al.

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