A bearing pad and bearing are provided which can inhibit the bearing pad from being deformed without increasing the costs. In a bearing pad (2), a conduit that extends from a first opening (3a) formed in a high temperature zone (2H) on a sliding surface (2a) opposing to a supported surface (1a) towards the direction apart from the supported surface (1a) and that finally reaches a second opening (3d) is formed.

A hydrodynamic slide bearing (10, 10′) supports a shaft (14, 14′) that is mounted rotatably. The hydrodynamic slide bearing (10,10′) comprises a plurality of bearing segments (12, 12′) arranged next to one another in the rotation direction (22, 22′). The segment surfaces together form a running surface (16, 16′) for the shaft (14, 14′). At least one bearing segment (12, 12′) has a plurality of grooves (26, 26′) disposed in its segment surface, and the grooves (26, 26′) are orientated substantially transverse to the rotation direction (22, 22′). The rear groove edges (261) in the rotation direction (22, 22′) are orientated obliquely to their respective assigned radial plane (24, 24′) and are undercut in relation to their respective assigned radial plane (24, 24′). The front groove edges (262) in the rotation direction (22, 22′) are not undercut and are orientated obliquely to their respective assigned radial plane (24, 24′).

A hydrodynamic slide bearing (10, 10′) supports a shaft (14, 14′) that is mounted rotatably. The hydrodynamic slide bearing (10,10′) comprises a plurality of bearing segments (12, 12′) arranged next to one another in the rotation direction (22, 22′). The segment surfaces together form a running surface (16, 16′) for the shaft (14, 14′). At least one bearing segment (12, 12′) has a plurality of grooves (26, 26′) disposed in its segment surface, and the grooves (26, 26′) are orientated substantially transverse to the rotation direction (22, 22′). The rear groove edges (261) in the rotation direction (22, 22′) are orientated obliquely to their respective assigned radial plane (24, 24′) and are undercut in relation to their respective assigned radial plane (24, 24′). The front groove edges (262) in the rotation direction (22, 22′) are not undercut and are orientated obliquely to their respective assigned radial plane (24, 24′).

A tilting pad journal bearing is arranged such that a circumferential relative position of an opening portion of an oil feeding hole to supply lubricant oil to a sliding portion of a bearing pad with respect to the bearing pad differs depending on the position of each bearing pad. For a bearing pad under a rotary shaft which supports the load of the rotary shaft, the circumferential position of an opening portion of an oil feeding hole with respect to the bearing pad is set toward an upstream side of a space between pads in a rotating direction of the rotary shaft. For a bearing pad above the rotary shaft, the circumferential position of an opening portion of an oil feeding hole with respect to the bearing pad is set toward a downstream side of a space between pads in the rotating direction of the rotary shaft.

A tilting pad journal bearing is arranged such that a circumferential relative position of an opening portion of an oil feeding hole to supply lubricant oil to a sliding portion of a bearing pad with respect to the bearing pad differs depending on the position of each bearing pad. For a bearing pad under a rotary shaft which supports the load of the rotary shaft, the circumferential position of an opening portion of an oil feeding hole with respect to the bearing pad is set toward an upstream side of a space between pads in a rotating direction of the rotary shaft. For a bearing pad above the rotary shaft, the circumferential position of an opening portion of an oil feeding hole with respect to the bearing pad is set toward a downstream side of a space between pads in the rotating direction of the rotary shaft.

The invention relates to an exhaust-gas-driven turbocharger having a hydrodynamic plain bearing having a rotor and a stator, the rotor being rotatable with respect to the stator, the rotor bearing surface being located opposite a counter-surface of the stator in order to generate hydrodynamic pressure in the region of a converging gap. In such a hydrodynamic plain bearing, the application properties can be improved by the fact that the rotor bearing surface and/or the counter-surface constitutes in a section view, in the context of a section along and through the rotation axis, a continuous bearing contour that is constituted from convex or concave curvatures and/or from at least two contour segments that are embodied as straight lines and/or curvatures. The invention also relates to a hydrodynamic plain bearing or bearing arrangement having such a plain bearing.

An electrical submersible pumping system includes thrust bearings and radial bearings fabricated from a micro-grained polycrystalline diamond compact (“USPDC”) material that is ultra-strong; and where the USPDC is produced using a catalyst free process. In examples, all components of the bearings are formed from the ultra-strong USPDC material. Pads are in the bearings that have a contact surface, and the pads selectively tilt about a tilt member in response to variations in an opposing contact surface. The tilt members are attached to or otherwise associated with the pads, and are in contact with a resilient member that improves tilting response of the pads. The resilient members are encased in jackets that cover surfaces of the resilient members not in contact with the tilt members. The jackets are set in channels formed in structure of the bearings.

A bearing pad for a tilting-pad bearing includes a first member having a bearing surface and a second member disposed on a back surface side of the first member. At least one of a back surface of the first member or a front surface of the second member facing the back surface of the first member has a recess for forming a cavity between the first member and the second member. Preferably, the bearing pad further includes a support member disposed on a back surface side of the second member and tiltably supporting the first member and the second member, and the recess is formed over at least a part of an installation range of the support member in a plan view of the bearing pad.

A bearing pad for a tilting-pad bearing includes a first member having a bearing surface and a second member disposed on a back surface side of the first member. At least one of a back surface of the first member or a front surface of the second member facing the back surface of the first member has a recess for forming a cavity between the first member and the second member. Preferably, the bearing pad further includes a support member disposed on a back surface side of the second member and tiltably supporting the first member and the second member, and the recess is formed over at least a part of an installation range of the support member in a plan view of the bearing pad.

A system including: a journal bearing having a carrier, a rotor arranged rotatable about a rotational axis relative to the carrier, and a fluid in a clearance between the rotor and the carrier; at least one sensor to measure a vibration signal of the rotor; a control system adapted to determine a pressure set point for the fluid in the clearance based on the vibration signal, and to provide control signals generated based on the pressure set point; and active means adapted to modify the pressure of the fluid in the clearance based on the control signals.