Abstract: An apparatus is provided for a turbine engine. This turbine engine apparatus includes a journal bearing extending axially along and circumferentially about an axis. The journal bearing extends radially between an inner side and an outer side. The journal bearing includes a bore, a passage and a groove. The bore extends axially within the journal bearing and is formed by the inner side. The passage extends radially within the journal bearing and is fluidly coupled with the bore and the groove. The groove is arranged at the outer side. The groove extends longitudinally within the journal bearing between a first end and a second end. The groove extends axially within the journal bearing between a first side and a second side. An axial distance between the first side and the second side changes as the groove extends longitudinally between the first end and the second end.

Abstract: A motor apparatus having an oil circulation structure may collect churning oil inside a housing and efficiently disperses the collected oil in each drive system, smoothly performing cooling and lubrication of the drive system including a motor and a reduction gear. Furthermore, even under low or high load conditions of the drive system, the oil level inside the housing is maintained at a constant level to maintain desired lubrication and cooling performance.

Abstract: A fluid bearing for operably connecting a shaft to a center housing of a turbocharger is provided. The fluid bearing includes a single-piece bearing sleeve defining a bore between first and second ends that each form a thrust face. The sleeve includes first and second bearing portions proximal to an associated one of the first and second ends, and a shank connecting the first and second bearing portions. Each of the first and second bearing portions includes an outer bearing surface defining a maximum outer diameter, and each of the first and second bearing portions includes an inner bearing surface defining a minimum inner diameter for radially supporting the shaft in the bore. The inner bearing surface is a continuous surface free of grooves. The sleeve has a wall thickness defining oil passages spaced from the inner bearing surface and configured to supply oil to the thrust face.

Abstract: A turbo refrigerator is provided with: a turbo compressor having a motor; an oil cooling unit which cools lubricating oil which is supplied to at least a portion of the turbo compressor; a refrigerant introduction part which introduces some of the refrigerant which circulates between an evaporator and a condenser into a motor accommodation space and the oil cooling unit; and a cooling unit which cools the refrigerant which is introduced into the motor accommodation space and the oil cooling unit.

Abstract: A turbine operable with a first fluid and a second fluid is provided. The turbine includes a shaft and having a dry gas seal area, a balance area, and a shaft surface. The turbine also includes a stationary component coupled to a housing and having a first side and a second side and defining a channel in flow communication with the shaft surface. A heat exchange assembly is coupled to the housing and in flow communication with the shaft and the stationary component. The heat exchange assembly includes a first flow path coupled in flow communication with the dry gas seal area and the channel and configured to direct the first fluid along the first side. Heat exchange assembly also includes a second flow path coupled in flow communication with the balance area and channel and configured to direct the second fluid along the second side.

Abstract: A thrust bearing for a turbocharger includes a bearing body having a bearing surface extending parallel to a collar of a rotating shaft. The bearing body defines a central bore through which the rotating shaft extends. The thrust bearing includes tapered lands formed in the bearing surface at spaced arcuate locations extending radially outward of the second bore. Each tapered land includes a first ramp extending from within the bearing body to the bearing surface along a gradient, a flat extending from the first ramp along the bearing surface, and a second ramp extending from the flat into the bearing body along the gradient. Rotation of the shaft and the collar in either direction equally pressurizes a working fluid between the collar and the bearing surface.

Abstract: A yaw or pitch bearing for a wind turbine includes a slewing ring bearing assembly having an outer race and an inner race, both having an inner surface and an outer surface. The inner surface of the outer race and the outer surface of the inner race have a plurality of threads that engage and define a threaded bearing surface.

Abstract: In aspects, the present disclosure provides an apparatus for handling axial thrust in rotating equipment. The apparatus may include a thrust bearing and a runner having a contact surface engaging the thrust bearing. The runner may include passages extending between the contact surface and an opposing surface of the runner. The apparatus may further include a lock ring assembly that has channels in communication with the passages of the runner. In certain embodiments, one or more cavities may be formed on the contact surface of the runner. The cavities may be in communication with the internal passages of the runner. In aspects, the present disclosure provides a method for handling axial thrust in a pump assembly. The pump assembly may include a thrust bearing assembly that may include a runner having a contact surface engaging a thrust bearing pad. The method may include flowing a lubricating fluid to the contact surface using at least one internal passage formed in runner.

Abstract: An asymmetrical bearing is disclosed for use in a gear pump. The bearing may have first and second opposing faces, and first and second bores in communication with the first and second opposing faces. The first and second bores may be configured to receive first and second shafts of a gear pump. The bearing may have a first flat side surface and a second curved side surface, where the second curved side surface includes first and second curved portions associated with the first and second bores, respectively. The first and second faces and the first flat side surface may also include a plurality of grooves configured to direct a flow of process fluid over the bearing during operation of the pump. Self-aligning features can be provided on one or more sealing elements to ensure desired alignment of the sealing components during assembly. Other embodiments are described and claimed.

Abstract: A center support assembly includes a bearing that supports a driveshaft for rotation about an axis. A shield is fixed to the bearing and a seal is positioned between the shield and the bearing. The shield and seal cooperate to retain lube within the bearing and prevent external contaminants from entering the bearing. A lube passage is formed between an outer surface of the bearing and an inner surface of the shield. At least one externally accessible fitting is in fluid communication with the lube passage and is used to supply additional lubricant to the bearing when needed.

Abstract: A mounting piece (1) for receiving a roll neck of a roll used in steel and non-ferrous metal processing has at least one lubricant-receiving chamber (7) on a roll body side (3) and at least one lubricant-receiving chamber (8) on a discharge side (4) which are located beneath a lowest support point (9), connection bores (10) between the lubricant-receiving chambers (7, 8) on the roll body and discharge sides (3, 4), wherein the lubricant (2) is collected in additional lubricant-receiving chambers (15, 16) in the mounting piece (1).

Abstract: An exemplary locating mechanism includes a bearing outer race (422) that has a central axis (z-axis) and that has a turbine end, a compressor end and a slot (421), of an axial length, disposed between the turbine end and the compressor end; and a deformable clip (430) shaped as a semi-cylindrical wall having an axial length less than the axial length of the slot, where in a tension state, the clip (430) has an inner circumference to position the clip (430) with respect to the slot (421) and where in a compression state, the clip (430) has an inner circumference that locates the clip (430) in the slot (421). Various other exemplary technologies are also disclosed.

Abstract: A bearing system can reduce the relative velocity between a bearing member and a rotation shaft and a rotating member to decrease a load on the bearing member although the rotation shaft and the rotating member rotate in opposite directions with the bearing member therebetween. The bearing system includes a case and a rotation shaft supported by the case. A rotating member is disposed coaxially outside the rotation shaft and rotates in the direction opposite to that of the rotation shaft. A housing is interposed between the rotation shaft and the rotating member and is fixed to the case. A bearing member that rotatably supports the rotating member is interposed between the housing and the rotating member.

Abstract: The invention relates to a bearing shell comprising a first exposed region and a second exposed region, said two exposed regions being formed on the inner surface of the two bearing shell ends. The oil grooves arranged in the two exposed regions are inclined in relation to the central line of the bearing shell, in the direction of flow of the lubricating oil. In this way, the lubricating oil is prevented from escaping in the axial direction in the exposed regions. The invention also relates to a method for producing such bearing shells.

Abstract: A method of lubricating and cooling a hydrodynamic plain bearing for a rotating element comprises the steps of supplying fresh, cold lubricant under pressure from a pressure chamber arranged upstream of a fixed gliding plane to a lubricating gap between the fixed gliding plane and the rotating element, the supply of fresh, cold lubricant being so controlled that an effective lubricating wedge is formed between the rotating element and the fixed gliding plane.

Abstract: There is provided a shaft member such as a bearing, washers, and shaft, having at least one surface defining a plurality of radial grooves for providing radial fluid communication without generating significant thrust loading between the shaft member and an adjacent surface. The grooves can be formed by pressing a die against the surface(s) of the shaft member.

Abstract: A turbocharger in which a drive shaft supports at one end a turbine driven by exhaust gases from an internal combustion engine. The end of the drive shaft remote from the turbine supports a drive connection which is coupled to an output shaft of the driving engine. The shaft is supported in a housing by a first bearing adjacent the turbine and a second bearing adjacent the drive coupling. The first and second bearings each define an inner bearing surface relative to which the shaft rotates and an outer bearing surface which rotates relative to the housing. The first and second bearings are mechanically coupled together such that they rotate relative to the housing at the same speed. Coupling the two bearings together ensures that directional forces applied to the bearing at the end adjacent the drive connection which might cause that bearing to seize are resisted by torque delivered from the bearing at the other end of the shaft.

Abstract: A separator for separating particles entrained in a fluid is disclosed. The separator includes a sleeve adapted to be mounted over a rotatable shaft for forming a cavity therebetween, an inlet to the cavity, an outlet to the cavity and means for imparting a centrifugal force on fluid within the cavity. The means for imparting the centrifugal force is operatively connected to the shaft so that, in use, spinning of the shaft creates the centrifugal force. In use, a slurry of fluid and particles enters the cavity through the inlet, the particles are caused to separate from the fluid by action of the centrifugal force, and the separated particles and fluid leave the cavity via the outlet with the particles tending to be closer to the sleeve than the shaft.

Abstract: A device for the supply of a liquid under pressure to a flow passage (13) in a member in a shaft suspension unit (1) of a centrifugal separator, which has a stationary casing (3) and a unit, which is resiliently and oscillation dampingly suspended in the casing (3) by at least one elastical element (10), the member forming a part of the composed unit. To be able to supply liquid to the member in a sample manner with a certain controllable flow which is made sure under overpressure a first supply channel portion (19) is connected to a liquid source (16) for the supply of liquid under pressure extending through the stationary casing (3). To the first supply channel portion (19) there is connected a second supply channel portion (21) extending through the elastical element (10). A third supply channel portion (23) is connected to the second supply channel portion (21), extending through the non-rotatable part of the composed unit and having an outlet opening (24) in the flow passage (13).

Abstract: A self-lubricating bearing for use in submersible oil-filled motors is disclosed. The bearing comprises a bearing housing and is fixed against rotation. A bearing sleeve is disposed in the bearing housing. The bearing sleeve is fixed in the bearing housing, and has a slot disposed therethrough. The bearing housing has an inlet and an outlet defined therethrough that intersect the slot in the bearing sleeve. The bearing is disposed about a rotatable shaft in the motor. Rotation of the shaft will cause oil to be drawn in through the inlet so that the shaft and the bearing surface of the bearing sleeve are lubricated. Rotation will also cause oil drawn in through the inlet to be expelled through the outlet back into the motor so that there is a constant circulation of oil through the bearing to provide lubrication.

Abstract: A positioning pivot including a shaft having a first portion, a second portion and a third portion, a sleeve and a hinge butt and is able to prolong its life span by inserting the third portion into the sleeve and the second portion into a first collar of the hinge butt. With the helical grooves defined in the second and the third portions, the helical slits defined in the sleeve and the first collar are able to disperse the lubricant over a larger area and thus provide the proper friction therebetween.

Abstract: A device for discharging a liquid lubricant from a bearing configuration for a shaft which rotates around an axis, in particular for a steam turbine. The bearing configuration has a bearing, upon which the lubricant acts and which mounts the shaft, at least one seal, which is adjacent to the bearing and encircles the shaft, and a collecting chamber which is assigned to a first end of the bearing and encircles the shaft. The lubricant that escapes at the first end can be intercepted and channeled away by way of the collecting chamber. A lubricant sump chamber is provided geodetically beneath the bearing and is connected to a lubricant outflow. The collecting chamber has a deflection duct that extends through the lubricant sump chamber and is intended for channeling away the lubricant into the lubricant outflow. There is also taught a process for discharging a liquid lubricant from the bearing configuration.

Abstract: According to the invention, a lubrication element is located in a sleeve bearing and extends through the central annular surface that mates with a shaft. The lubrication element has a cool lubricating fluid aperture that leads to a cool fluid space defined by a base face that is generally tangential to the central surface and a downstream face that is generally normal to the central surface. The down stream face extends at an angle to the longitudinal axis of the sleeve bearing. The lubrication element also has an upstream face that discharges hot lubricating fluid. The upstream face also extends at an angle to the longitudinal axis of the bearing. The upstream face directs hot fluid to a side of the sleeve bearing.

Abstract: A combined bearing and fluid supply unit is disclosed primarily for use in a power transmission system for marine vessels. The unit has a housing having a circular opening. The circular opening is delimited by an inner surface of the housing, and the inner surface is provided with one or more first circumferentially extending channels which respectively accommodate one or more bearings. The bearings are adapted to support a shaft passing through the circular opening. The housing also includes a first bore extending radially from a second circumferentially extending channel in the inner surface of the housing to an outer surface of the housing. This second circumferentially extending channel is adapted to convey fluid passing from the first bore to a first internal passage in the shaft. Preferably, this fluid is used to actuate a clutch carried on the shaft in a given direction.

Abstract: Precise quantities of lubricant from separate reservoirs under automatic trol are injected into chambers of housings of shielded rolling element bearings. Separate feed line conduits directly deliver the lubricant to the shielded critical surfaces of such bearings and insure maintenance-free operation of machinery with which the bearings are associated.

Abstract: A bearing unit in which two oil sintered slide bearings are fitted in a bearing space of non-magnetic bearing housings to be spaced away from each other and a magnetic fluid is interposed between a rotary shaft and the oil sintered slide bearings to rotatably support the rotary shaft. The rotary shaft is made from a material having permeability, and a ring-shaped permanent magnet is fixedly provided between the two oil sintered slide bearings to be spaced therefrom. The magnetic fluid is held between the two oil sintered slide bearings to be circulated.

Abstract: An improved journal bearing includes a first groove, in the direction of journal rotation, formed in the inner surface of the journal bearing. The first groove extends axially along the length of the bearing and has opposed, open groove ends. A second groove, in the direction of journal rotation, is formed in the inner surface of the journal bearing. The second groove extends axially along the length of the bearing and has opposed, closed ends. An orifice is provided for supplying a lubricant to the inner surface of the journal bearing. The lubricant supply orifice is disposed substantially centrally along the bearing length and intermediate the first and second grooves.

Abstract: An improved journal bearing includes a first groove, in the direction of journal rotation, formed in the inner surface of the journal bearing. The first groove extends axially along the length of the bearing and has opposed, open groove ends. A second groove, in the direction of journal rotation, is formed in the inner surface of the journal bearing. The second groove extends axially along the length of the bearing and has opposed, closed ends. An orifice is provided for supplying a lubricant to the inner surface of the journal bearing. The lubricant supply orifice is disposed substantially centrally along the bearing length and intermediate the first and second grooves.

Abstract: Apparatus for an automatic bar feeder is given which provides fluid to the space between the barstock and guide tube having a pump integral to the piston pusher to control pressure on the barstock being fed to the machine tool.

Abstract: A mechanism for providing a continuous supply of oil on camshaft lobes used in an overhead cam internal combustion engine. The mechanism includes camshaft bearing caps affixed to the engine about the camshaft journals. Protruding from the side surface of the central portion of the bearing caps are oil diverter pads. The oil diverter pads cause oil that builds up on the surface of the camshaft journals to be diverted toward the camshaft lobes to provide lubrication between the camshaft lobes and the roller finger followers.

Abstract: The submersible propulsor unit of the invention comprises a cylindrical shroud having a water inlet and a water outlet, a propeller having a hub rotatably mounted within the shroud on a shaft, and an electric motor for driving the propeller that includes a rotor mounted around the periphery of the propeller, and a stator circumscribing the shroud, and a bearing assembly that includes means for circulating ambient water around the bearing surfaces to both lubricate and cool them. A stationary cover is detachably secured over the bearing assembly on the water inlet end of the shaft to provide easy access to the bearings in the bearing assembly. The vane members that concentrically mount the shaft within the interior of the shroud are all connected on the downstream side of the propeller to reduce the cavitation and resulting noise when the propeller rotates. The magnetization of the rotor is provided by a plurality of permanent magnets for both improved efficiency, and lower noise.

Abstract: A tool shaft is supported for rotation about a vertical axis by means of upper and lower bearings. A motor drives the shaft at least at 500 rpm. A gap is formed radially between the shaft and an adjacent stationary member, the gap extending from one bearing to the other. A reservoir which contains lubricating oil communicates with the gap to supply oil thereto to cool and lubricate. The tool shaft carries a helical thread disposed within the gap which pumps the oil upwardly through the gap and through the bearings to create a hydrostatic bearing for the shaft segment extending between the bearings. The tool shaft is driven by a gear shaft which also is provided with a hydrostatic support by means of oil pumped through a radial gap by means of helical threads which are stationary, but which are disposed closely adjacent a surface of the gear shaft.

Abstract: A roller element for a powered-roller tarnsfer system has a plurality of lubricant pressure relief areas about or in the bearing surface to increase and provide consistent rotary drive power transmitted from a powered axle to the roller.

Abstract: An electric motor lubrication system and a method of making the same are disclosed. The motor is a unit bearing motor with an oil reservoir at the bottom of a vertically disposed shaft. The motor rotor has a shaft journaled in a bearing post on the frame, and the lower end of the post has two grooves to receive an oil-saturated wick. Each groove has a flat bottom which extends at at least a 5-degree angle relative to the shaft axis, and the intersection of the flat bottom with the shaft aperture forms a plow edge having a component of force directing oil toward the bearing upon shaft rotation. This readily supplies oil upwardly for a vertical shaft motor. The foregoing abstract is merely a resume of one general application, is not a complete discussion of all principles of operation or applications, and is not to be construed as a limitation on the scope of the claimed subject matter.

Abstract: An improved bearing assembly is provided for axially retaining journal bearings in a turbocharger. The turbocharger includes a center housing having an elongated bearing bore for receiving an axially spaced pair of journal bearings which in turn support a rotatable turbocharger shaft. Lubricating oil is supplied through the center housing for passage to the shaft-bearing interface through radially open oil flow ports formed in the journal bearings. A bearing spacer is interposed axially between the journal bearings such that the opposite ends of the bearing spacer define a pair of thrust surfaces for engaging and locating the axially inboard faces of the journal bearings. Additional thrust surfaces are formed on thrust members carried by the turbocharger shaft to engage and locate the axially outboard faces of the journal bearings.

Abstract: A device for use in making beach entry scuba dives by assisting the diver to transport scuba tanks and other diving gear across a beach or like land area and then serve as an off-shore floating work platform and dive flag holder has a quadrilateral frame, a roller unit and a handler unit. The frame is formed of hollow tubing and includes a force member, an aft member, and a pair of side members. The roller unit includes first and second arms that extend from the frame beyond the aft member, a buoyant roller, and bearings rotatably supporting the roller between the arms outboard of and parallel to the aft member. The handler unit includes third and fourth arms that extend from the frame beyond the fore member and a tubular handle member supported by the third and fourth arms outboard of the fore member. The frame carries a support surface and straps to support and retain tanks and other gear on the device.

Abstract: A bearing assembly for a spinning or twisting spindle shaft is provided which includes at least one support bearing device for supporting a shaft. A lubricant feeding and discharging duct member is provided for feeding and discharging lubricant to and from the support bearing device. The lubricant feeding and discharging duct member includes an outlet discharging member for discharging lubricant out of a bearing housing.

Abstract: A protection system for pump shaft bearings which are exposed to water or water combined with various particulate material when the pump and the shaft or a portion thereof are immersed in the water or combined water and particulate material which is being pumped. The protection system includes an enclosing chamber associated with the bearing or bearings supporting the pump shaft which are immersed in the material being pumped with the enclosing chamber being filled with grease exiting from the bearing so that the pressurized lubricant to the bearing will maintain the enclosing chamber filled with grease to exclude the material being pumped from the enclosing chamber and bearing assembly disposed therein. The enclosing chamber is associated with and connected to a conventional flanged shaft bearing and includes grease seals associated with the pump shaft to maintain the interior of the enclosing chamber in isolated relation to exterior environmental conditions.

Abstract: An improved modular bearing assembly capable of operation for radial and thrust loads under starved and flooded lubricant conditions with low power losses. A journal bearing alone may be employed or journal and thrust bearings. Thrust bearings per se are also disclosed and claimed. Particular bearing characteristics are disclosed for preferred journal liner and thrust bearings.

Abstract: A rotary compressor which essentially includes a journal, a compression mechanism including a cylinder and a rolling piston provided on the journal to suck, compress and discharge refrigerant gas by rotating the rolling piston eccentrically in the interior of the cylinder, a motor to drive the journal, a journal bearing to support freely to rotate the journal, and an axial direction oil groove to introduce a lubricating oil into a gap between the journal and the journal bearing, the axial direction oil groove being formed along the axial direction of the journal at a position corresponding to a low pressure area of an oil film of the lubricating oil caused by a deflection of the journal due to the eccentric rotation of the rolling piston.

Abstract: In gear pumps having an automatic lubricator, channels are provided for the delivery to and the discharge from the pump bearings, of lubricant, which consists of and is withdrawn from the medium to be conveyed. The conveying means for conveying the lubricant through the channels are mounted in the shafts of the gear pump. The channels can connect the suction side or the delivery side or the suction and delivery sides of the pump to the pump bearing.

Abstract: A conveyor roller and bearing arrangement rotatable about a fixed axle lying between spaced side frame rails includes a pair of self-aligning bearing assemblies in each end of the roller. Each bearing assembly includes an inner bearing race fixed to the axle, an outer bearing race rotatably mounted on the inner bearing race and an outer cushioning sleeve secured to the roller and outer bearing race for maintaining axial alignment between the inner and outer bearing races.

Abstract: The invention provides a radial friction bearing assembly, particularly for rotatably mounting the rolls of a paper or textile material processing machine, which will give a stable rotational movement without any vibrations and ensures that always an uninterrupted lubrication film is available, even at very low rotational speeds. A preferred embodiment of the bearing assembly comprises a stationary shaft member and an annular sleeve member rotatably mounted on the shaft member. The latter one comprises on its outer surface a plurality of equidistantially arranged longitudinal grooves which extend parallelly to the axis of the shaft member. A plurality of trapezoidally shaped recesses or pockets, having a substantially smaller depth than the longitudinal grooves, extend from and communicate with said grooves, the base edge of the trapezoid adjoining the leading edge of the longitudinal grooves.

Abstract: A reversible vertical journal bearing with a self contained closed circuit lubrication system, directed toward ceiling fan applications, is disclosed. Lubricant pumping, from a reservoir, is accomplished by an array of throttled, high pressure, triangular pumping cavities on the journal surface. The array is completely symmetrical about the journal axis, so that unidirectional lubricant flow is produced at either direction of journal rotation. The lubricant is collected in a manifold at the top of the bearing, and it is gravity fed back into the reservoir. Optimum design parameters for a stable high load bearing capability device are indicated.

Abstract: Apparatus and a method are disclosed for providing a lubricant film within a sleeve bearing for prolonging bearing life. A rotating shaft is supported by a sleeve bearing and power is supplied to the rotating shaft. That the shaft is operated at a minimum speed to establish a lubricant film between the shaft and the bearing upon startup prior to being operated at a reduced rotational speed. Once the lubricant film is established, this film is maintained during reduced speed operation and bearing life is prolonged.

Abstract: A combination air and oil cooled seal housing is provided which also utilizes trapped stagnant air as an insulator. The combination prevents coking of the oil supplied as a lubricant to the bearings and seals in the hot section of a turbine engine. Pressurized air is introduced from the compressor into the inner structure support housing by means of hollow passages. The pressurized air absorbs heat as it traverses the passages in the structure. The oil supplied is connected to an annular shape cavity allowing the oil to be circulated therein and cool the seal support structure. Additional insulation is provided by cylindrically shaped trapped air shields surrounding the bearing package. Oil flowing through the structure can then properly lubricate the seals and bearings which support the turbine rotor stages within the housing assembly.

Abstract: A combination air and oil cooled seal housing is provided which also utilizes trapped stagnant air as an insulator. The combination prevents coking of the oil supplied as a lubricant to the bearings and seals in the hot section of a turbine engine. Pressurized air is introduced from the compressor into the inner structure support housing by means of hollow passages. The pressurized air absorbs heat as it traverses the passages in the structure. The oil supply is connected to an annular shape cavity allowing the oil to be circulated therein and cool the seal support structure. Additional insulation is provided by cylindrically shaped trapped air shields surrounding the bearing package. Oil flowing through the structure can then properly lubricate the seals and bearings which support the turbine rotor stages within the housing assembly.

Abstract: A hydrokinetic spindle including a housing having a bearing in which the journal portion of a shaft is mounted. The shaft has a helical groove having a progressively decreasing cross-section formed on the journal surface thereof and extending from one end of the journal portion to the other which picks up a predetermined amount of fluid lubricant from fluid pickup posts leading from at least one fluid reservoir formed in the housing and directs the lubricant to and upon the shaft under pressure thereby maintaining a film of fluid lubricant under pressure between the shaft and the bearing of the housing. The housing and shaft are sealed in an artificial atmosphere.

Abstract: A bearing for supporting a turbocharger shaft comprises a one-piece cylindrical bearing sleeve for rotational floating between a turbocharger housing and shaft. The bearing includes an inner diameter configured to define a plurality of axially extending arcuate lands formed on a common radius and separated by oil-receiving recesses.

Abstract: A bearing system for a vertical type rotary machine including a vertically extending rotor shaft including a guide bearing immersed in oil in an oil tank disposed around the rotor shaft. The guide bearing has a cylindrical bearing surface juxtaposed against the peripheral surface of the rotor shaft and a plurality of axially extending oil grooves formed in the cylindrical bearing surface. An oil guide member is mounted on a lower end surface of the guide bearing adjacent to the open lower axial end of each oil groove. Each oil guide member has a guide surface facing a flow of oil in the oil tank induced by the rotation of the rotor shaft for guiding the oil flow into the associated oil groove. The guide surface has a lower edge thereof remote from the lower end surface of the guide bearing, which is advanced toward the direction of oil flow with respect to an upper edge of the guide surface adjacent to the lower end surface of the guide bearing.