Cradle bearing arrangement for axial piston hydraulic devices

U.S. Patent Number: 5383391

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.

Inventors: Goade; James C. (Morris, IL), Werner; Claude H. (Manhattan, IL)

Assignee: Caterpillar Inc. (Peoria, IL)

Application Number: 08/210,487

Issued: 1995-01-24

Expired: 2007-01-24

Classes: 92/12.2 ; 74/60; 91/499; 91/505; 92/57

Field of search: 92/12.2,57,71 417/222.1 91/499,504,505 74/60

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