Cradle bearing arrangement for axial piston hydraulic devices

Expansible chamber devices – Displacement control of plural cylinders arranged in... – Parallel cylinders

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92 57, 91505, 91499, 74 60, F01B 300, F16H 2300

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active

053833910

ABSTRACT:
Arcuate bearings are useful, for example, in pivotally supporting a cradle swashplate of axial piston variable displacement hydraulic devices. The bearings of known hydraulic devices have either been a pair of laterally spaced roller bearings assembly or a pair of laterally spaced sleeve bearings. The subject hydraulic device includes a roller bearing assembly positioned between the swashplate and the housing at the side of the swashplate subjected to high loads and a less expensive sleeve bearing positioned between the swashplate and the housing at the other side of the swashplate subjected to low loads. By using this combination of bearings, the overall cost of the hydraulic device is reduced without impairing the operation of the hydraulic device.

REFERENCES:
patent: 3465680 (1969-09-01), Saila
patent: 4029367 (1977-06-01), Schwede et al.
patent: 4627330 (1986-12-01), Beck, Jr.
patent: 4858480 (1989-08-01), Rohde et al.
patent: 4896583 (1990-01-01), Lemke
patent: 5017095 (1991-05-01), Burgess et al.
patent: 5024143 (1991-06-01), Schniederjan

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