Provided are a polyurethane elastomer composition excellent in the abrasion resistance and swelling resistance, and a bearing material formed of the polyurethane elastomer composition. The polyurethane elastomer composition contains a polyurethane elastomer of 100 parts by mass, polyethylene wax of 325 parts by mass, and paraffin wax of 110 parts by mass. Further, preferably the polyurethane elastomer composition contains a cobalt based compound of 0.110 parts by mass.

Provided are a polyurethane elastomer composition excellent in the abrasion resistance and swelling resistance, and a bearing material formed of the polyurethane elastomer composition. The polyurethane elastomer composition contains a polyurethane elastomer of 100 parts by mass, polyethylene wax of 325 parts by mass, and paraffin wax of 110 parts by mass. Further, preferably the polyurethane elastomer composition contains a cobalt based compound of 0.110 parts by mass.

Provided are a suspension bush and a suspension device that are able to achieve both steering operability and stability of a vehicle at the time of turning. A projection portion is formed on the outer circumference of an inner cylinder. A guide is formed on the inner circumference of an outer cylinder. In the guide, a slit is formed along an extending direction that includes: a component, in a parallel direction, which runs parallel with an axial line; and a component in a circumferential direction around the axial line. The projection portion is disposed in the slit, and a threaded mechanism is formed by the projection portion and the slit.

A proprotor system for a tiltrotor aircraft having helicopter and airplane flight modes includes a yoke having a plurality of blade arms each having an inboard pocket. Each of a plurality of bearing assemblies is disposed at least partially within one of the inboard pockets with each bearing assembly including a bearing cage, a shear bearing and a centrifugal force bearing. Each of a plurality of inboard beams is disposed at least partially between one of the centrifugal force bearings and one of the shear bearings. Each of a plurality of proprotor blades is coupled to one of the inboard beams. Hub bolts couple each of the bearing cages to the yoke such that the hub bolts provide centrifugal force load paths between the bearing assemblies and the yoke inboard of the inboard pockets.

The disclosure relates to a sleeve-like bearing receiving member for a plastics material sleeve, wherein the sleeve-like bearing receiving member may include a cylindrical sleeve wall that delimits the inner side of the sleeve-like bearing receiving member, wherein a plurality of apertures are formed in the cylindrical sleeve wall, wherein each aperture of the plurality of apertures is at least partially bordered by a collar that protrudes into the inner side of the sleeve-like bearing receiving member, and wherein the collar is configured to engage in the plastics material sleeve to retain the plastics material sleeve in the sleeve-like bearing receiving member.

A proprotor system for a tiltrotor aircraft having a helicopter flight mode and an airplane flight mode. The proprotor system includes a yoke having a plurality of blade arms with inboard pockets. A centrifugal force and shear bearing assembly is disposed in each of the inboard pockets of the yoke. Each of a plurality of proprotor blades is coupled to the yoke by one of the bearing assemblies such that each proprotor blade has a pitch change degree of freedom about a pitch change axis and a tilting degree of freedom about a focal point. Each bearing assembly includes a centrifugal force bearing coupled to the yoke, a shear bearing coupled to the yoke and an inboard beam coupled between the centrifugal force bearing and the shear bearing. Each inboard beam is coupled to a respective proprotor blade.

The present disclosure discloses a trunnion mount for mounting an engine, in particular a combustion engine, to a chassis, comprising a support element rigidly connected and/or connectable to the engine having a ring portion with an outer bearing surface, which may be arranged concentrically around the crankshaft; a female support having an inner bearing surface for surrounding the bearing surface of the support element, the female support forming the link between the chassis and the engine; and a rubber bearing arranged between the inner bearing surface of the female support and the outer bearing surface of the support element. In one or more examples, the trunnion mount includes a rubber bearing that is directly vulcanized on at least one of the bearing surfaces and/or wherein the ring portion is formed as a separate element from a mounting portion of the support element and connectable thereto via axial screws.

The present disclosure discloses a trunnion mount for mounting an engine, in particular a combustion engine, to a chassis, comprising a support element rigidly connected and/or connectable to the engine having a ring portion with an outer bearing surface, which may be arranged concentrically around the crankshaft; a female support having an inner bearing surface for surrounding the bearing surface of the support element, the female support forming the link between the chassis and the engine; and a rubber bearing arranged between the inner bearing surface of the female support and the outer bearing surface of the support element. In one or more examples, the trunnion mount includes a rubber bearing that is directly vulcanized on at least one of the bearing surfaces and/or wherein the ring portion is formed as a separate element from a mounting portion of the support element and connectable thereto via axial screws.

A riser tensioner bearing is provided. The riser tensioner bearing is an asymmetric bearing having an outer member comprising a cylindrical outer profile and an at least partially spherical interior profile, and an inner member comprising an at least partially spherical outer profile and a substantially cylindrical outer profile.

An elastomeric bearing assembly has a housing, a centrifugal force bearing axially captured relative to the housing, and a sliding cap disposed between the housing and the centrifugal force bearing.