A bearing element for at least one adjustable guide vane of a turbomachine, in particular an aircraft engine, is provided. The bearing element comprising a porous matrix made of carbon and/or graphite and at least one metallic phase or a metal salt that is at least partially arranged inside the pores of the matrix, so that what results is a metal-infiltrated or a metal-salt-infiltrated material.

Embodiments of the invention are directed to bearing assemblies configured to effectively provide heat dissipation for bearing elements, bearing apparatuses including such bearing assemblies, and methods of operating such bearing assemblies and apparatuses. In an embodiment, a bearing assembly includes a plurality of superhard bearing elements distributed about an axis. Each superhard bearing element of the plurality of superhard bearing elements has a superhard table including a superhard surface. The bearing assembly includes a support ring structure coupled to the plurality of superhard bearing elements. One or more of the superhard bearing elements includes a superhard table, which may improve heat transfer from such superhard bearing elements.

A rolling bearing (1) has an outer ring (3) and an inner ring (2) that can rotate in relation to the outer ring (3). A sensor (8) is arranged on the outer ring (3) and a master ring (13) is arranged on the inner ring (2). The master ring (13) can be detected by the sensor (8). The master ring (13) has an electrically conductive section (15), and a contact element (10) fixed on the outer ring (3) bears against the electrically conductive section (15) of the master ring (13).

[Object] Provided is a technique capable of reducing the possibility of generation of a Cu—Sb compound in an overlay and the possibility of delamination between layers.

[Solution] A sliding member includes: an overlay including an alloy plating film of Bi and Sb; a lining including an Al alloy; a first intermediate layer including Cu as a main component, and laminated on the lining; and a second intermediate layer including Ag as a main component, and connecting the first intermediate layer and the overlay.

A high-speed shaft assembly includes a shaft of a first material and an outer member of a second material disposed about the shaft, the shaft or outer member being rotatable about an axis. The two materials have substantially different coefficients of thermal expansion such that the shaft and/or the outer member is relatively displaceable along the axis at temperatures over 120° C. and less than −18° C. A bearing inner ring is disposed about the shaft and has an outer race which is a cylindrical surface or an annular groove. A bearing outer ring is disposed about the inner ring and coupled with the outer member. The outer ring has an outer race which is the other one of the cylindrical surface and the groove. A plurality of balls disposed between the races are displaceable axially along the cylindrical race surface during relative displacement of the shaft and outer member.

To provide a sliding member including an overlay capable of realizing good fatigue resistance while preventing interlayer peeling. A sliding member including an overlay formed of an alloy plating film of Bi and Sb, and the overlay is bonded to a lining formed of a copper alloy via an intermediate layer containing Ag as a main component.

Embodiments of the invention are directed to bearing assemblies configured to effectively provide heat dissipation for bearing elements, bearing apparatuses including such bearing assemblies, and methods of operating such bearing assemblies and apparatuses. In an embodiment, a bearing assembly includes a plurality of superhard bearing elements distributed about an axis. Each superhard bearing element of the plurality of superhard bearing elements has a superhard table including a superhard surface. The bearing assembly includes a support ring structure coupled to the plurality of superhard bearing elements. One or more of the superhard bearing elements includes a superhard table, which may improve heat transfer from such superhard bearing elements.

A rolling bearing of the present invention includes an inner ring, an outer ring and a rolling element which are all made of a steel material, and (A) a surface of the rolling element is formed with an Ag coating film, and a raceway of at least one of the inner ring and the outer ring is formed with a Cr coating film or (B) a surface of the rolling element is formed with a Cr coating film, and a raceway of at least one of the inner ring and the outer ring is formed with a Cr coating film.

A rolling bearing (1) has an outer ring (3) and an inner ring (2) that can rotate in relation to the outer ring (3). A sensor (8) is arranged on the outer ring (3) and a master ring (13) is arranged on the inner ring (2). The master ring (13) can be detected by the sensor (8). The master ring (13) has an electrically conductive section (15), and a contact element (10) fixed on the outer ring (3) bears against the electrically conductive section (15) of the master ring (13).

A high-speed shaft assembly includes a shaft of a first material and an outer member of a second material disposed about the shaft, the shaft or outer member being rotatable about an axis. The two materials have substantially different coefficients of thermal expansion such that the shaft and/or the outer member is relatively displaceable along the axis at temperatures over 250 F. and less than 0 F. A bearing inner ring is disposed about the shaft and has an outer race which is a cylindrical surface or an annular groove. A bearing outer ring is disposed about the inner ring and coupled with the outer member. The outer ring has an outer race which is the other one of the cylindrical surface and the groove. A plurality of balls disposed between the races are displaceable axially along the cylindrical race surface during relative displacement of the shaft and outer member.