Slewing turntable bearing

Details Slewing turntable bearing Slewing turntable bearing

1997-05-23

1998-10-13

Footland, Lenard A.

Bearings

Rotary bearing

Plain bearing

384296, 384297, 384428, F16C 3304

Patent

active

058202706

ABSTRACT:
The rotatable fork-plate of a fork lift truck is mounted to a large-diameter slewing gear, and the slewing bearing fits inside. In place of the usual ball bearing, a plastic strip is curved around into a circle, and placed between the slewing gear and the stator frame. The circle is not complete, in that a circumferential gap is left between the ends. The rotor and stator are formed with suitable faces for supporting journal forces, and thrust forces both ways, via the plastic strip. The preferred profile of the strip is channel-shaped. The strip floats circumferentially between the rotor and the stator. The plastic strip being corrosion free, no seals are provided on the bearing, even for operation near sea-water.

REFERENCES:
patent: 3692375 (1972-09-01), Matt et al.
patent: 3720261 (1973-03-01), Heilhecker et al.
patent: 5549394 (1996-08-01), Nowak et al.

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