Bearings – Rotary bearing – Plain bearing
Patent
1990-10-29
1992-02-11
Hannon, Thomas R.
Bearings
Rotary bearing
Plain bearing
384210, 29898051, F16C 2504
Patent
active
050871315
ABSTRACT:
A three piece spherical bearing has a race having two axial halves. One axial half has a spherical bore. The other axial half has a bore which tapers radially outward and axially inward at an angle of about 11.degree. or more to an axial direction. The tapered wall has one or more annular depressions with radial walls and walls at angles to the radial walls. A ball having a spherical outer surface and an axial bore is placed in the race. An insert having a curved inner surface and having an outer surface with a diameter slightly less than the minimum diameter of the tapered wall is pressed into the race and is expanded around the ball into contact with the tapered wall. Forces which tend to force the insert cause sharp linear pointed surfaces at the insert of the tapered wall and radial walls of the grooves to bite into the outer surface of the insert, tightly gripping the insert within the race and holding the three part spherical bearing together. Ridges and grooves provided in the outer surface of the insert deform into engagement with the grooves in the insert-receiving tapered wall and increase axial strength of the bearing.
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Creighton Wray James
Hannon Thomas R.
IMO Industries Inc.
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