Abstract: A bearing system includes a stationary element, a housing, a shaft, a first and second thrust collars, a first and second bearing units, and a mechanical component. The housing includes a first end portion and a second end portion contacting the stationary element. The shaft and second thrust collar are disposed within the housing. The first and second thrust collars are spaced apart from each other and coupled to the shaft. The first bearing unit is disposed between the first thrust collar and a first side of second thrust collar. The first bearing unit contacts the first thrust collar and coupled to the first end portion. The second bearing unit is disposed between a second side of second thrust collar and second end portion. The second bearing unit contacts second thrust collar. The mechanical component extends along the shaft and contacts the second bearing unit and second end portion.

Abstract: A preload guide system guides, in a horizontal plane, movement of a rotation structure having journals rotating around a rotation axis having a horizontal rotation shaft. At right-side surfaces of the journals, guide bearing components press predetermined positions on the same side with respect to an axial-direction reference plane and rotatably support the journals. At left-side surfaces of the journals, guide bearing components press positions corresponding to the guide bearing components at the right side surfaces, and rotatably support the journals. The support systems adjust displacement amounts of the guide bearing components such that a sum of the displacement amounts becomes zero.

Abstract: A bidirectional bearing, a drive train, a planetary gear and a wind generator having a bidirectional bearing are provided. A bidirectional bearing comprises an outer bearing shell having a first intermediate bearing shell, which is coupled to the shaft and which cooperates with the outer bearing shell. The bidirectional bearing further comprises a second intermediate bearing shell, which is arranged opposite to the outer bearing shell with respect to the first intermediate bearing shell. The second intermediate bearing shell is configured to take up a first load having a first direction from the first intermediate bearing shell. Furthermore, the first second intermediate bearing shell is configured to receive a second load having a second direction, which is substantially opposite to the first direction. The first intermediate bearing shell receives the second load from the second intermediate bearing shell and is configured to transfer this second load to the outer bearing shell.

Abstract: On example of a rotorcraft bearing system includes a bearing housing attached to an elastomeric bearing on a longitudinal axis, an end surface of the elastomeric bearing attached to an end surface of the bearing housing. The rotorcraft bearing system also includes a sliding contact bearing having an end surface. The rotorcraft bearing system also includes an intermediate sliding contact bearing material layer. Under load on the longitudinal axis, the end surface of the sliding contact bearing is configured to contact an opposing end surface of the bearing housing through the intermediate sliding contact bearing material layer to form a rotational slip joint.

Abstract: A pump assembly with a rotatable rotor shaft (10), wherein the rotor shaft (10) includes at least one axial bearing (36, 40) and a radial bearing (30, 32), which are integrated into a common bearing assembly (16).

Abstract: A method of adjusting backlash in a down hole bearing assembly involves providing in side by side relation on an outer surface of an inner mandrel a circumferential first threaded seat adapted to accommodate a first nut which engages the first threaded seat by rotation in a first rotational direction and becomes disengaged by rotation in a second rotational direction and a circumferential second threaded seat adapted to accommodate a second nut which engages the second threaded seat by rotation in the second rotational direction and becomes disengaged by rotation in the first rotational direction. The first nut is threaded onto the first threaded seat to place the inner mandrel in tension with a first stop and a second stop engaging a thrust bearing. The second nut is coupled to the first nut to resisting any rotational movement of the first nut in the second rotational direction.

Abstract: A thrust bearing configuration for rotary applications includes a shaft (12) having an external surface (14) and a housing (16) having an internal surface (18). The housing and the shaft are adapted for relative rotational movement. Inner bearing support members (22) extend radially outwardly from the external surface of the shaft in axially spaced relation. Outer bearing support members (26) extend radially inwardly from the internal surface of the housing. A bearing pad (24, 28) is disposed between each one of the inner bearing support members and an adjacent one of the outer bearing support members. With the described configuration an axial force exerted upon the shaft is transmitted from the shaft through each of the inner bearing support members and bearing pads to the outer bearing support members and the housing. This thrust bearing acts like a bearing stack. It is possible to stack any number of these bearing pads to withstand anticipated axial loads.

Abstract: A bore hole tool assembly utilizes a multi-stage bearing system deployed between an inner mandrel and an outer tool housing wherein each bearing stage includes bearing element deployed between two deformable elements. The deformable elements are selected, based on the design and material characteristics of the housing, mandrel and bearings, such that tension and compressive loads are distributed proportionally across each bearing stage. A method for calculating loading and the selection of the deformable elements is also disclosed.

Abstract: Disclosed is a self-lubricating thrust bearing having a number of axially-aligned parts. The bearing is preferably in cartridge form and includes an internal circular spring. The spring is located between two adjacent disks and functions to force the disks apart when the bearing loading is below a predetermined amount. In this manner, when the bearing loading is low, the spring applies pressure to the bearing's components and any attached structure. When the bearing loading exceeds a predetermined amount, the spring becomes compressed sufficiently to enable direct contact between the disks while not interfering with the rotational movement of any part of the bearing. The spring can be made of any resilient material, such as spring steel or an elastomer.

Abstract: A support assembly has two support devices. Each support device has a base, a bearing seat with a thrust bearing and a thrust journal. The two support devices can support the shaft together. The force applied to the structure of each support device is reduced, and the friction between each thrust journal and the corresponding thrust bearing is also reduced. The useful life of the support assembly is prolonged.

Abstract: Disclosed is a self-lubricating thrust bearing having a number of axially-aligned parts. The bearing is preferably in cartridge form and includes an internal circular spring. The spring is located between two adjacent disks and functions to force the disks apart when the bearing loading is below a predetermined amount. In this manner, when the bearing loading is low, the spring applies pressure to the bearing's components and any attached structure. When the bearing loading exceeds a predetermined amount, the spring becomes compressed sufficiently to enable direct contact between the disks while not interfering with the rotational movement of any part of the bearing.

Abstract: A hydrodynamic bearing which includes a carrier and a plurality of bearing pads circumferentially-spaced about the carrier. The pads may have a modular construction whereby pad portions are releasably secured to support portions. The pads may also be releasably secured to the carrier. Various bearing pad constructions, are contemplated including constructions in which the secondary support portion includes a membrane and the primary support portion includes a cylindrical member extending between the membrane and the bearing pads. A continuous bearing pad ring may be substituted for the discrete bearing pads. The carrier may be provided with locator pins in the pad receiving bores to orient the pads properly. The carrier may have cuts and grooves formed therein to provide a flexible or even beam mounted support for the bearing pads. The bearing may also have a multimode configuration and may include smart structures.

Abstract: A thrust bearing for use in downhole drilling systems employing fluid motors having a stator retaining ring and a rotor retaining ring. These rings have a plurality of bearing inserts. The bearing insert surfaces of the rotor contact the bearing surfaces of the stator. The studs which make up the bearing surface have a threaded bolt secured thereto. The threaded bolt extends through a plurality of threaded holes in each of the retaining rings. The studs and bolt may be removed or inserted by use of a simple hand tool, such as an Allen wrench.

Abstract: The invention concerns a diamond bearing assembly for a downhole motor. The assembly (10) includes at least one set of opposing, relatively rotating thrust bearing rings (20, 22) each of which includes an annular support element (24, 30) and PCD compacts (26, 32) carried by the support elements. The PCD compacts of the bearing rings oppose one another at a thrust bearing interface (80). Shear limiting means (96, 110) are provided. These means are arranged to shear if frictional forces between the opposing PCD compacts at the thrust bearing interface exceed a critical level. This eliminates relative rotation between the bearing rings and avoids possible overheating and thermal degradation of the PCD. The shear limiting means can also serve as an alignment means to ensure correct axial alignment of the bearing components. The bearing assembly may also include a compact radial bearing capability.

Abstract: The invention concerns a diamond thrust bearing assembly for a downhole motor. The assembly (10) includes at least one set of opposing bearing rings (20, 22), each of which has an annular support element (24, 30) and a plurality of PCD compacts (48, 62) carried in circumferentially spaced relationship by the support element. The PCD compacts present opposing bearing surfaces (52, 66) with the bearing surfaces (66) of the compacts of one bearing ring in each set being circumferentially longer than the bearing surfaces (52) of the compacts of the other bearing ring of the set.

Abstract: A hydrostatic thrust bearing includes several bearing bushings and support bushings with axial spacer sleeves and radial flanges. Pairs of pressure surfaces to which oil can be admitted are arranged one behind the other in load application direction. The pressure surfaces of each pair of pressure surfaces are arranged frontally opposite each other. The thickness of the radial flanges of the bearing bushings is smaller than the radial flanges of the support bushings. The wall thickness of the spacer sleeves of the bearing bushings increases from bearing bushing to bearing bushing. The wall thickness of the spacer sleeves of the support bushings decreases in the same direction from support bushing to support bushing. Oil-conducting bores in the radial flanges of the support bushings ensure a uniform temperature level of the bearing bushings and support bushings.

Abstract: A thrust bearing arrangement in which individual thrust bearings are arranged in a plurality of stages. These bearings are connected to thrust-load adjustment devices (1st type with travel limitation, 2nd type without travel limitation) as a result of which the beginning of load-carrying by each bearing can be determined as a result of an adjustable initial tensioning.

Abstract: A marine drive unit (1) includes a lower torpedo housing (9). At least one propeller shaft (21) is mounted in the housing for rotation about a drive axis (17). The propeller shaft is driven by a driving gear (16) suitably connected to a marine engine (4) and mounted on the drive axis. A first forward thrust bearing (41) is disposed between the driving gear and the housing. In addition, a second forward thrust bearing (42) is disposed adjacent the forward end of the propeller shaft. A pre-loading device, in the present embodiment a washer-like Belleville spring (43) of a desired capacity, is disposed to provide an adjustable rearwardly biasing force on the second thrust bearing.

Abstract: A scroll-type fluid transferring machine of an improved construction, in which the bottom surface of the base plate of the orbiting scroll member and the bearing surface of the thrust bearing are well adapted even under a thrusting force during compression of the operating fluid, such scroll-type fluid transferring machine having its feature such that the surface of the thrust bearing to support the base plate of the orbiting scroll member, or the surface of the base plate of the scroll member supported by the thrust bearing is slanted in the radial direction so as to form the surface thereof in a center-concaved shape, wherein the inner peripheral side is concaved with respect to the outer peripheral side at a very small distance in the axial direction, or that an axial projection which is concentric with the thrust bearing and has a narrow width in the radial direction is provided between the opposed surfaces of the thrust bearing and the bearing frame in the vicinity of the center part in the radial direct

Abstract: A thrust bearing assembly includes a carrier member having formed therein an annular slot, a plurality of bearing members, which may be thrust pads or guide members, being received within the slot. Each bearing member has a radially outer surface and an opposed radially inner surface, two spaced regions of the radially outer surface making bearing contact with the associated radially outer sidewall of the annular slot, and a region of the radially inner surface of the bearing member making bearing contact with the associated radially inner sidewall of the annular slot. The bearing contacts prevent, for each bearing member in the carrier member, both radial movement and rotational movement about an axis through the bearing member, and are such that the bearing members are capable of being fitted into slots within a wide range of curvatures.