A sliding bearing includes: an inner ring element; an outer ring element; and at least one sliding bearing element, which is arranged between the inner ring element and the outer ring element. The sliding bearing element has multiple sliding bearing pads, wherein the individual sliding bearing pads each have a bearing surface, which is designed in the shape of a spherical cap.

A method for diagnosing a rolling device (10) including an outer member (1), an inner member (3), and rolling elements (5) includes: applying an AC voltage to an electric circuit including the outer member (1), the rolling elements (5), and the inner member (3); measuring an impedance and a phase angle of the electric circuit when the AC voltage is applied; and measuring a dielectric constant of a lubricant at least one of between the outer member (1) and the rolling elements (5) and between the inner member (3) and the rolling elements (5) based on the measured impedance and the measured phase angle.

A replaceable bearing insert may include a bearing surface including a curvature configured to be complementarily contoured to a trunnion ball. The bearing surface may be configured to be in confronting engagement with the trunnion ball. An outer surface opposite the bearing surface may be configured to be received in confronting engagement with an inner surface of an adapter. A first semi-annular flange may extend radially outwardly beyond the outer surface. A second semi-annular flange may extend radially outwardly beyond the outer surface. The first semi-annular flange and the second semi-annular flange may be configured to extend along a first side and a second side of the adapter, respectively, such that the inner surface of the adapter is positioned between the first semi-annular flange and the second semi-annular flange.

The control arm bushing assembly includes an inner race that has a cylindrical shape and extends along a central axis between opposite ends. An outer race, which has a cylindrical shape and is disposed radially outwardly of the inner race, extends along the central axis between opposite ends that are generally aligned with the opposite ends of the inner race. A plurality of rolling elements are disposed between and in contact with the inner and outer races for allowing the inner and outer races to freely rotate about the central axis relative to one another. The inner race presents an open bore which extends along the central axis for receiving a fastener. At least two cushioning rings surround the outer race and are made of an elastomeric material.

A bearing for a pump with a shaft rotating around an axial direction includes a housing and a bearing cover fixed to the housing, a bearing structure for supporting the shaft of the pump, a reservoir for a lubricant and an oil ring for transporting the lubricant and for supplying the lubricant to the bearing structure wherein the oil ring is arranged for being moved by the rotating shaft and wherein a retaining element is provided for that is fixed with respect to the housing or the cover, the retaining element being designed and arranged such that it restricts a movement of the oil ring at least in the axial direction.

A lubricant for a rolling-element bearing includes a conventional lubricant as a base lubricant and at least one first additive, wherein the first additive includes muscovite, and the lubricant includes a proportion of muscovite that is between 3% and 5%. Also a method of lubricating a rolling-element bearing using the lubricant and a method of repairing a rolling-element bearing using the lubricant.

The invention relates to a wind turbine comprising a plurality of individual yaw bearing units and a method of replacing a pad of such a yaw bearing unit. The yaw bearing unit comprises a calliper structure divided into an upper portion and a lower portion, wherein the lower portion can be dismounted without also dismounting the upper portion. An upper pad is provided between a flange providing support for a nacelle and a mainframe of the nacelle. A radial pad is arranged on a radial surface of the upper portion and contacts a stop element located at either ends of the upper portion. An adjustable lower pad is arranged in a through hole in the lower portion and can be replaced via a lower opening in the lower portion. The radial pad can be replaced in a sideward direction by removing one of the stop elements or replacing it in an axial direction by removing the lower portion.

The renovated bearing and the method of constructing the renovated bearing includes a trimmed off foundation base with a new wear block secured to the foundation base and adapted to bear against a rotating shaft to keep it from vibrating or otherwise rotating out of true. By reusing, or rather continuing using, a foundation base portion of an existing bearing, only the duty wearing block component can be replaced simply and economically. This reduces wastage of the larger bearing composition mass. A like-new bearing can be assembled quickly and more economically than a complete replacement of a bearing.

In an offshore system having a floating vessel, a turret within a hull opening, and a bearing assembly including a support row assembly axially transferring the weight of the turret to the vessel and allowing the vessel to weather vane about the turret, a method and arrangement for in situ remediation of a damaged support row assembly. An outer upper ring is removed from an outer lower ring and a support ring is installed on the outer lower ring. A lower race and support rollers of a remedial support row assembly are installed on the support ring. A reaction ring is positioned above the support ring and connected to an inner ring secured to the turret. The inner ring is axially displaced relative to the outer lower ring and the turret axial loading is transferred to the remedial support row assembly between the support ring and the reaction ring.

A rotating shaft assembly comprising a rotating shaft mounted within a casing and a primary bearing assembly in bearing engagement with the shaft and the casing and positioned between the shaft and the casing. The assembly also includes a secondary bearing assembly comprising a secondary bearing normally radially spaced from the shaft and arranged to engage with or contact the shaft in the event of failure of the primary bearing normally in contact with the shaft, and an inspection member to provide an indication of frictional engagement of the secondary bearing with the shaft.