Bearings – Rotary bearing – Antifriction bearing
Patent
1983-08-29
1986-04-15
Footland, Lenard A.
Bearings
Rotary bearing
Antifriction bearing
384619, 384621, F16C 1930
Patent
active
045824363
ABSTRACT:
An improved live roller circle for rotatably supporting the upper frame or body of a large excavator on its lower frame or base is provided. It comprises upper and lower annular rails respectively mounted on the upper and lower frames of the machine. A plurality of tapered rollers, arranged in a circle, roll between and in contact with the rails. The rollers are nominally spaced apart by a circular cage to which the rollers are sufficiently loosely connected to allow them to self-align with respect to the rails irrespective of irregularities in the shape of alignment of the cage. A third annular rail extending around the outer circumference of the circle of rollers is also preferably provided.
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Deutsch Barry E.
Dresser Industries Inc.
Footland Lenard A.
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