A bearing system includes a first bearing, the first bearing being annular in shape and defining a ring aperture, the first bearing including a first surface and a second surface, a second bearing being substantially the same in construction to the first bearing, a first surface of the second bearing contacting a second surface of the first bearing, wherein each of the bearings is constructed of nylon MDS.

A bearing material may include a polymeric matrix of polyamide-imide (PAI) polymer material and a plurality of melamine cyanurate particles dispersed within the polymeric matrix.

A bearing system includes a first bearing, the first bearing being annular in shape and defining a ring aperture, the first bearing including a first surface and a second surface, a second bearing being substantially the same in construction to the first bearing, a first surface of the second bearing contacting a second surface of the first bearing, wherein each of the bearings is constructed of nylon MDS.

Embodiments are directed to solid lubricant assemblies for providing over temperature protection for bearings and gears in rotorcraft systems. A solid lubricant enters a fluid state above a certain temperature and is positioned so that fluid lubricant is applied to the bearings or gears.

The bore of the ring has workings (1a) suitable to act as a grease reserve at the friction area. A self-lubricating coating (3) with low wettability is applied to the entire surface of the said bore, including in the workings (1a) suitable to act as a grease reserve, such that after wearing of the layer of self-lubricating coating at the friction surface of the bore, the difference in wettability between the said friction surface and the workings still having the coating, enables the grease to be drawn out of the said workings in order to lubricate the said friction surface.

A bearing device includes a rotary part which is configured to be rotatable about a rotational axis and has a rotary surface intersecting the rotational axis, and a stationary part which has a stationary surface facing the rotary surface. One of the rotary surface or the stationary surface includes a bearing surface part for forming a bearing oil film. The rotary surface includes a first inner circumferential region, and a first outer circumferential region facing the stationary surface on a radially outer side of the bearing surface part and having higher oleophobicity than the first inner circumferential region.

A bearing material may include a matrix of polyamide-imide polymer material, and a solid lubricant particulate. The solid lubricant particulate may have a median particle size of less than 1 micrometre.

Disclosed are bearing assemblies including a compliant layer within a mounting socket for reducing wear of the bearing.

A bearing including a sidewall including an open metal substrate at least partially embedded in a low friction material, the sidewall further including a generally cylindrical body; and a flange contiguous with and extending from an axial end of the generally cylindrical body, where at least one of 1) the flange includes a multiple wall construction including a plurality of flange sidewalls in contact with each other along at least 25% of a radial length of the flange, or 2) the sidewall or the flange comprises an outward conductive region and an inward conductive region.

Methods for making a tribological bearing wear surface for a compressor component are provided. Such methods involve semi-solid metal casting, where an admixture of solid lubricant particles and a metal alloy material is heated to melt the metal alloy material, while the lubricant particles remain in a solid phase. The alloy material and solid lubricant have substantially different densities. The metal alloy material may be a copper, iron, or aluminum alloy, for example. The method further comprises mixing and cooling the admixture to form a semi-solid slurry admixture. Next, the method comprises introducing the semi-solid slurry admixture into a die. Finally, the semi-solid slurry admixture in the die is solidified to form a solid component having the solid lubricant particles homogenously distributed within a metal alloy material matrix, thus forming a metal matrix composite. Compressor components made from such methods are also provided.