A bearing cage or bearing cage segment is disclosed, in particular for a rolling-element bearing, wherein the bearing cage includes a polyetheretherketone (PEEK) base material having a low and medium viscosity, and less than 30%, in particular 15% to 25%, reinforcing material is added to the base material, and the reinforced PEEK material has a shrinkage in the melt-flow direction that falls in the range of 0.4% to 0.6%.

The invention relates to a bearing cage (1) for receiving rolling elements (6). In addition to two rings (2, 3), the bearing cage also has a plurality of webs (4) which run axially between the rings (2, 3). In order to prevent the rolling elements (6) from falling out of the pockets (5) formed between the rings (2, 3) and the webs (4), the webs (4) are at least provided with a groove (7a) which runs in the direction of the respective web (4). When the rolling elements (6) are inserted into the pockets (5), a tool (9) engages into the groove (7a) and bends the edge region (11) of the web (4) in a direction of the rolling elements (6) inserted into the pockets (5).

Rolling bearings may include outer and inner rings defining races, rolling elements which maintain rolling contact between the races, a cage holding the rolling elements, and discharge elements. The cage may include cage-halves which are joined together. The cage-halves may define semi-circle portions which hold the rolling elements and to which the discharge elements are fixed and may also define rib portions. The cage may also be monolithic and define rib portions to which the discharge elements are fixed and major-arc portions which may hold the rolling elements by a press-fit. The discharge elements may include tubes which are fixed to the semi-circle portions and/or the rib portions. The discharge elements may also include filaments which may extend from the cage and contact the outer and inner rings. The rolling bearings may join a stator and rotor of an electric motor.

Rolling bearings may include outer and inner rings defining races, rolling elements which maintain rolling contact between the races, a cage holding the rolling elements, and discharge elements. The cage may include cage-halves which are joined together. The cage-halves may define semi-circle portions which hold the rolling elements and to which the discharge elements are fixed and may also define rib portions. The cage may also be monolithic and define rib portions to which the discharge elements are fixed and major-arc portions which may hold the rolling elements by a press-fit. The discharge elements may include tubes which are fixed to the semi-circle portions and/or the rib portions. The discharge elements may also include filaments which may extend from the cage and contact the outer and inner rings. The rolling bearings may join a stator and rotor of an electric motor.

A linear guide device includes a rail that has a first advancing device extending along a longitudinal direction, a carriage that can be displaced relative to the rail along the longitudinal direction and has a second advancing device extending along the longitudinal direction, a cage that can be displaced relative to the rail and the carriage along the longitudinal direction and a coupling element that is designed for simultaneously engaging into the first and the second advancing device in order to cause a movement of the cage relative to the rail and/or the carriage when the carriage is advanced relative to the rail along the longitudinal direction. The coupling element has at least one projection that interacts with a stopping face formed on the rail and/or the carriage in order to retain the coupling element in the linear guide device.

A spherical roller bearing for a wind turbine includes outer and inner rings, two sets of spherical rollers rolling between the rings and a cage retaining the rollers. The cage includes an axial inner cage ring extending in a circumferential direction of the bearing, a first axial outer cage ring spaced from the axial inner cage ring on one axial side and connected to the inner cage ring by cage bars forming pockets receiving one set of rollers, and a second axial outer cage ring spaced from the at least one axial inner cage ring on a second, opposite axial side and connected to the axial inner cage ring by cage bars forming pockets receiving the other set rollers. Each cage bar has a radial curvature concave with respect to a pitch diameter. The cage and/or the rollers are free of structure for holding the rollers in the cage.

A spherical roller bearing for a wind turbine main shaft includes an outer ring, an inner ring having a bore with a diameter of at least 499 mm, two sets of spherical rollers which roll on raceways of the rings, and at least one roller cage. Each cage includes an axial inner cage ring extending in a circumferential direction of the bearing, a first axial outer cage ring spaced from the axial inner cage ring on a first axial side and connected by cage bars to form pockets receiving the first set of rollers, and a second axial outer cage ring spaced from the axial inner cage ring on a second axial side and connected by cage bars to form pockets receiving the second set of rollers. The cage bars are at least partially arranged at a position in a radial direction that is offset to a pitch diameter.