The Torrington Company

Other

Leo M Reubelt

John M Grillo

Matthew G Urmaza

Edward P Butler, Iii

Vincent E Leto

Brian P Berg

Steven E Sundquist

An oscillating bearing is disclosed for a variable-displacement axial piston hydraulic machine having a swashplate with a convex semi-cylindrical bearing face with provisions for attaching the oscillating bearing, and a housing with a concave semi-cylindrical bearing saddle. The oscillating bearing includes thin outer and inner race members having centered openings and formed in arcs congruent with the concave surface of the bearing saddle of the housing and the convex bearing face of the swashplate, respectively. The outer race member has support means on at least one axial end for supporting a timing member which engages a timing feature of the swashplate and synchronizes motion for all parts of the oscillating bearing, and the inner race member has means for holding the inner race against the convex bearing face of the swashplate. A separator is interposed between the inner and outer race members, the separator being formed in an arc having inner and outer surfaces parallel to the proximal surfaces of the race members, the separator also having an axially centered opening and two additional substantially rectangular openings axially spaced from the axial ends of the separator and the centered opening. The additional openings serve as pockets for anti-friction rollers. The separator further has one axial end which extends beyond the proximal axial ends of the inner and outer races and which includes a timing notch for engaging the timing member.

Roller bearing segment for swashplates and other limited-oscillation

A thrust bearing assembly has inner and outer races having radially directed portions with a free outer edge. A selective washer is positioned over the free edge of one of the outer and inner races, the selective washer being engageable with that race to retain the selective washer to the thrust bearing assembly. Rolling elements are positioned between the inner race and the outer race and are retained within a bearing retainer. Axially inwardly extending flanges of the inner and outer races locate and retain the outer and inner races and the bearing retainer together as a thrust bearing assembly.

Selective washer and thrust bearing assembly

Rollers are positioned between first and second thrust washers and in contact with first and second raceways. The rollers being held within a cage that is mechanically retained by axially directed lips of the thrust washers. A third thrust washer is positioned against an axially outward surface of the second thrust washer and extends radially outwardly of the second raceway. The third thrust washer has a resilient retention tab extending through at least two slots of the second thrust washer that are located radially outwardly from the second raceway, such that the third thrust washer is mechanically secured to the second thrust washer by a snap-together assembly.

Thrust bearing assembly with washer

Growing community of inventors

Torrington, CT, United States of America

Leo M Reubelt