Abstract: A vertically mountable shaft and bearing assembly includes a thermally insulated housing which protects the shaft, bearing(s), seal(s), and bearing lubricant from overheating due to a surrounding process fluid at a temperature exceeding 65° C. The thermal insulation, which in some embodiments includes vacuum, air, or an insulating material, enables a rolling element bearing to be located near the shaft's distal end, thereby reducing shaft and bearing size requirements. Lubricant is circulated past the bearing(s) by a circulation and cooling system having a capacity typical of systems used with process fluids at much lower temperatures. Additional roller and/or journal bearings can be included. The lubricant circulation system can be actuated by the shaft or driven separately. Lubricant within the shaft housing can be pressurized, for example by pressurizing gas or by filling the lubricant above the surrounding process fluid level. The shaft can operate a process fluid pump impeller.

Abstract: In a rolling bearing including an oil supply unit for supplying lubricating oil stored in a tank by a pump via a nozzle which is made to open in an annular space defined between an inner ring and an outer ring, the nozzle is made to open in a space between an inner circumferential surface of a case and the inner ring, and the inner circumferential surface of the cage is formed into a surface in which an inside diameter of the cage is reduced gradually in a continuous or intermittent fashion from an axial center portion towards at least an end portion lying on a side where the nozzle is inserted, whereby a lubricating oil dropped on to the inner circumferential surface of the cage is caused to flow towards the axial center portion by virtue of centrifugal force generated by the rotation of the cage, so as to prevent the lubricating oil from flowing out to the outside of the bearing unit.

Abstract: A bearing assembly includes at least one outer ring and an inner ring unit having at least two inner rings, each having a central bore. A supporting element extends through the central bores. Roller bodies are rotatably disposed between the at least one outer ring and each of the inner rings. Radially-outer bores extend through the inner ring unit or the supporting element in the axial direction and each receives a screw or bolt for affixing the bearing assembly on a bearing carrier. The radially-outer bores are spaced from the symmetry axis of the bearing assembly. At least one lubrication conduit is defined on or in at least one of the inner rings and is configured to communicate liquid lubricant to the roller bodies.

Abstract: A method and apparatus for scavenging lubricant is disclosed herein. In the invention, a rotating structure is encircled within a sump housing and subjected to lubrication. The sump housing collects high-momentum lubricant flow and low-momentum lubricant flow. The interior of the sump housing is separated into a plurality of chambers with at least one dynamic seal. The at least one dynamic seal extends between the sump housing and the rotating structure to isolate the high-momentum lubricant flow from the low-momentum lubricant flow.

Abstract: To provide a rolling bearing assembly, in which a grease filled within the bearing assembly is utilized to achieve a high speed feature, a long life and a maintenance-free and a lubricant oil can be stably supplied from a minute gap, a stepped face continued from the raceway surface is provided in a stationary raceway ring unit of an inner and outer ring units in a direction away from rolling elements. A gap forming piece having a free end confronting the stepped face is provided to define therebetween a flow passage and a grease reservoir communicated with the flow passage. The rolling bearing assembly is so designed that a heat cycle can be induced in the grease reservoir and, base oil of the grease can be urged to flow out from the gap by the effect of a pressure variation caused by the temperature rise.

Abstract: A bearing for a connecting rod includes a retainer having a plurality of pockets spaced about a circumference of the retainer, a first end that defines a first flange, and a second end that defines a second flange opposite the first flange. The bearing also includes a plurality of radial bearing elements that supports a radial load, and each of the plurality of radial bearing elements is positioned in one of the plurality of pockets. A first plurality of axial bearing elements is positioned on the first flange and receives at least a portion of an axial load, and a second plurality of axial bearing elements is positioned on the second flange and receives at least a portion of the axial load.

Abstract: A driving-wheel bearing device includes: an outer race (50) having double-row outer raceway surfaces (52, 54) formed on an inner periphery thereof; a hub wheel (10) and an inner race (20) having a wheel attachment flange (14) at one end thereof and double-row inner raceway surfaces (12, 22) on an outer periphery thereof; and double-row rolling elements (30, 40) interposed between the outer raceway surfaces (52, 54) of the outer race (50) and the inner raceway surfaces (12, 22) of the hub wheel (10) and the inner race (20), the hub wheel (10) having a shaft hole into which a stem section (66) extending from an outer joint member (62) of a constant velocity universal joint (60) is spline-fitted by being press-fitted, in which a plate (80) having a molybdenum coating layer or a fluorine-resin coating layer (81) formed thereon and having a plate thickness ranging from 0.

Abstract: In a bearing apparatus, a first cup portion defining a portion of a stationary portion of a bearing apparatus includes a circular plate portion and a cylindrical portion projecting downward from an outer edge portion of the circular plate portion. A rotating portion of the bearing apparatus includes an annular recessed portion arranged to accommodate at least a lower end portion of the cylindrical portion. Accordingly, it is possible to limit the axial dimension of the bearing apparatus while also enabling both a radial dynamic pressure groove array and a pumping groove array to have a sufficient axial dimension. Additionally, one end of a through hole defined in the rotating portion is arranged to open into the annular recessed portion, so that any air bubbles introduced into a lubricating oil by the pumping groove array can be efficiently caused to flow downward through the through hole and out of the bearing apparatus.

Abstract: The invention is aimed, in a rolling bearing device, to improve its durability by appropriately attenuating vibration of a rotating shaft by means of a high level of dumping performance, and thereby to reduce the load imposed on the rolling bearing and/or the overall system. A rolling bearing device of the present invention comprises a rolling bearing (13) including: an inner ring (24) and an outer ring (23) that are disposed so as to be relatively rotatable; and a plurality of rolling elements (25) disposed between the inner ring (24) and the outer ring (23), in which the rolling bearing (13) supports relative rotation between a shaft (14) and a housing (12). Besides, the rolling bearing device comprises, between the rolling bearing (13) and the housing (12), a damper member (60) formed by one or more metal wires (64) that are knitted.

Abstract: The present invention is intended to provide a sliding member which exhibits an excellent anti-seizure property even under starved lubricant conditions. In the present invention, there is provided a sliding member with a structure, in which a coating layer having a sliding surface is adhered to the surface of the base material, wherein the coating layer does not contain a resin binder but has solid lubricant plate crystal particles laminated therein, wherein these solid lubricant plate crystal particles have a lamellar crystal structure in which (001) planes are stacked in parallel, and at least in the sliding surface, the orientation index of the (001) plane of the solid lubricant plate crystal particles is 90% or more.

Abstract: An oil supply unit provided in a rolling bearing apparatus has a lubricating oil discharge nozzle in which an opening is faced to a cage portion of the rolling bearing. An opening direction of the nozzle is inclined to a rotating direction with respect to a direction of a center axis of rotation.

Abstract: A lubricating device for a rolling bearing includes a lubricating oil introduction member (7) that has a discharge opening (8) opened to a circumferential groove (6) provided in an end face of an inner race (2) of a bearing (1). A slope section (2b) is provided on an outer peripheral surface of the inner race (2) and guides the lubricating oil in the groove (6) to a raceway surface (2a) of the inner race (2) by centrifugal force and surface tension acting on the lubricating oil. The introduction member (7) is provided with a flange-like section (10) that overlays the slope section (2b) with a minute gap ? between the flange-like section (10) and the slope section (2b) and that controls the flow amount of the lubricating oil flowing through the gap ? to the raceway surface (2a).

Abstract: The object is to sufficiently suppress heat-up of a rolling bearing for an alternator, prevent deterioration of lubricating grease due to heat-up of the rolling bearing, and to extend the lubricating life of the rolling bearing. Lubricating grease G is prepared which comprises a base oil having a dynamic viscosity of 13 to 73 cSt at 40° C., and thickened by an aromatic urea thickening agent. This lubricating grease G is sealed in the interior of a rolling bearing sealed by seal members 5 provided at both end surfaces of the bearing such that the lubricating grease accounts for 20% or more by volume of the entire inner void space of the bearing, and 80% or less by volume of a stationary inner space of the bearing. With this arrangement, it is possible to suppress heating of the bearing due to resistance produced when base oil bleeding into the bearing is stirred, while maintaining viscosity necessary for lubrication. Thus, it is possible to keep the bearing temperature at about 160° C.

Abstract: A bearing housing is disclosed herein. The bearing housing includes a chamber with out-take for oil scavenging. The out-take extends across a chordal arc of the chamber. A portion of an outer wall adjacent to the out-take has a spiral divergence.

Abstract: In a bearing device, a double row rolling bearing for supporting a pinion gear-side portion of a pinion shaft on a case (annular wall) is formed by a tandem-type double row angular contact ball bearing. A first row of balls having a larger pitch circle diameter are disposed between inner and outer rings of the double row angular contact ball bearing at a region near to the pinion gear, and a second row of balls having a smaller pitch circle diameter are disposed between the inner and outer rings at a region remote from the pinion gear. A bearing internal space is divided into a first bearing internal space containing the first ball row and open toward the pinion gear and a second bearing internal space containing the second ball row and sealed by partition walls formed respectively by bearing seals, lubricating grease being sealed in the second bearing internal space.

Abstract: A rotary bearing system that supports a shaft for rotating machinery in a housing comprises: at least one stationary rotary bearing mounted in the housing for supporting a respective journal of the shaft in a desired axial and radial alignment; at least one slidable rotary bearing, with an outer surface mounted within a respective inner support surface of the housing to form a respective linear bearing such that each slidable bearing may slide axially along the inner support surface of the housing, for supporting another respective journal of the shaft with the desired radial alignment; and at least one layer of a crystalline material that exhibits a high degree of basal cleavage bonded to at least one of the linear bearing surfaces; wherein each layer of crystalline material allows each slidable rotary bearing to slide axially along each respective linear bearing to compensate for differences in the coefficient of expansion of the housing and the shaft so as to prevent the bearing system from binding due to

Abstract: The present invention, as variously practiced, implements electrorheological fluid (ERF) as a bearing lubricant. Various modes of an inventive rolling element bearing apparatus provide for electrification of inventive electrode components, viz: (first mode) two annular disk electrodes, opposite each other and perpendicular to the two raceway surfaces; or, (second mode) electrically conductive inner and outer races, having an electrically conductive spacer therebetween; or, (third mode) plural electrodes, radially embedded in a race. An ERF lubricative coating remains on one or both raceway surfaces in accordance with Winslow effect principle (first and second modes) or edge effect principle (third mode).

Abstract: A sump housing for scavenging lubricant is disclosed herein. The sump housing includes an outer wall defining a chamber. A lubricated structure operable to rotate can be disposed within the sump housing. The sump housing also includes an out-take for lubricant scavenging. The out-take extends across a chordal arc of the chamber. The out-take includes an upstream first portion of the outer wall diverging away from the chordal arc at a first rate. The out-take also includes a downstream second portion of the outer wall opposite the first portion. The second portion diverges away from the chordal arc toward the first portion at a second rate greater than said first rate to define a blunt wall facing the first portion for reducing the likelihood that windage will limit lubricant scavenging.

Abstract: The invention concerns a bearing assembly comprising an inner ring, an outer ring and rolling elements, the inner ring and outer ring being rotatably coupled by means of the rolling elements. The rolling elements are disposed on opposing raceways within a bearing cavity and are retained in a cage. The bearing is provided with a lubricant and further comprises at least one sealing element, mounted in an annular gap between the inner and outer ring. To prevent the lubricant adhering to predetermined surfaces within the bearing cavity which do not require lubrication, at least one of these predetermined surfaces is provided with an oleophobic coating. One advantage of the invention is that the lubricant ages less quickly, leading to improved bearing service life.

Abstract: A bearing lubricating device, reducing the manufacturing cost and facilitating the dimensional control and the assembly process, comprises a casing provided around an outer ring rotating relatively to a support shaft; and a lubricating member provided in the casing, which is, after the casing has been fitted over the outer periphery of the outer ring, in contact with the outer ring to apply a lubricant contained in the lubricating member to the outer periphery of the outer ring. When the casing is fitted around the outer ring, the lubricating member is in contact with the outer ring in a position either on a line, that extends in parallel to a tangent passing through a contact point between the outer ring and a supported item borne on the outer ring and passes through the center of the outer ring, or on the opposite side of the line to the contact point.

Abstract: A well drilling head comprises a well drilling head housing, a bearing assembly, a first lubricant manifold and a second lubricant manifold. The well drilling head housing has a sidewall structure defining a central bore. The bearing assembly is configured for being removably seated within the well drilling head housing and for having a stripper rubber assembly attached to a lower end portion thereof. The bearing assembly includes a plurality of bearings and a bearing lubricant flow path configured for allowing bearing lubricant to be circulated through the bearings. The first lubricant manifold has a bearing lubricant passage coupled to the first end portion of the bearing lubricant flow path. The second lubricant manifold has a bearing lubricant passage coupled to a second end portion of the bearing lubricant flow path.

Abstract: A bearing apparatus includes a rolling bearing (16) having an outer ring (16a), an inner ring (16b), and rolling elements (16c) disposed between the inner ring (16b) and the outer ring (16a), a temperature sensor (TS) for measuring an internal temperature of the rolling bearing and a lubrication unit (22). The lubrication unit supplies lubricating oil in a quantity corresponding to the temperature detected by the temperature sensor, to the rolling bearing. With this configuration, it is feasible to provide the bearing apparatus capable of ensuring a sufficiently long life under the condition of high-speed rotations. The bearing apparatus is suitable for use in a spindle for a machine tool.

Abstract: The present invention, as variously practiced, implements electrorheological fluid (ERF) as a bearing lubricant. Various modes of an inventive rolling element bearing apparatus provide for electrification of inventive electrode components, viz: (first mode) two annular disk electrodes, opposite each other and perpendicular to the two raceway surfaces; or, (second mode) electrically conductive inner and outer races, having an electrically conductive spacer therebetween; or, (third mode) plural electrodes, radially embedded in a race. An ERF lubricative coating remains on one or both raceway surfaces in accordance with Winslow effect principle (first and second modes) or edge effect principle (third mode).

Abstract: A resin composition for a sliding member is difficult to peel and whose component is difficult to elute when the resin composition is formed as a film on a surface of a mechanical part, even though the resin composition is used in environment where the sliding member contacts lubricating oil containing a sulfur-based additive or in atmosphere containing a sulfur-based compound. A resin composition for a sliding member to be used for a mechanical part having a surface thereof formed of said sliding member. The resin composition contains polyamide-imide resin having an elongation percentage of 60% to 120%, fullerene, and at least one disulfide selected from among molybdenum disulfide and tungsten disulfide. 0.1 to 10 vol % of the fullerene and 0.5 to 20 vol % of the disulfide are contained in an entirety of the resin composition.

Abstract: A travel assembly is provided with a cylindrical spindle for being fixed on a body of a working vehicle, a rotary shaft arranged extending in an axial direction through the spindle and rotationally drivable by a driving source, a rim rotatably arranged on a side of an outer periphery of the spindle to permit mounting of a wheel thereon, a planetary gear reduction mechanism for transmitting rotation of the rotary shaft to the rim at a reduced speed, a bearing rotatably supporting the rotary shaft via a sleeve integrally fitted on the rotary shaft, and a retainer holding the bearing in place. A lube oil pipe for feeding lube oil to the rotary shaft is held in place by the retainer. The lube oil pipe branches within the retainer to form an oil passage. The oil passage has an opening through which the lube oil can be fed to rolling elements in the bearing.

Abstract: An oil scavenging system and method suitable for use in a gas turbine engine having a bearing housing. The bearing housing provides for arcuate slots within the housing and a plurality of peripherally arranged apertures disposed for cooperation with the arcuate slots. During rotation of the bearing and shaft, the rotational momentum induces rotation of the oil which distributes the oil to the peripheral circumference of the housing for eventual passage through the slots and apertures. The arrangement maximizes the use of the circumferential space of the bearing for efficient oil distribution.

Abstract: The present invention provides a grease composition capable of effectively preventing a rolling surface of a grease-enclosed bearing from having hydrogen brittleness-caused peeling and the grease-enclosed bearing. The grease composition includes a base grease consisting of a base oil and a thickener and an additive added to the base grease. The additive contains at least an epoxy compound. A mixing ratio of the epoxy compound to 100 parts by weight of the base grease is set to 0.05 to 10 parts by weight. The grease-enclosed bearing using the grease composition includes an inner ring (2) and an outer ring (3); a plurality of rolling elements (4) disposed between the inner ring (2) and the outer ring (3); and a sealing member (6) for covering openings (8a, 8b) disposed at both axial ends of the inner ring (2) and the outer ring (3). The grease composition (7) is enclosed on peripheries of the rolling elements (4).

Abstract: A positive displacement lubrication system is disclosed that includes a rotatable shaft, a bearing, and a centrifugal force generating lubrication member that is mounted on the shaft for rotation with the shaft. The centrifugal force generator is spaced from the bearing member. A labyrinthine lubricant flow passage extends from the bearing, through a space between the bearing and the centrifugal force generating member, to the outlet member. Among other things, the system and method provides an efficient method of actively managing bearing lubrication and removal of lubricant, while also acting to seal off bearing areas from leaking. The positive displacement devices can be used for both grease and oil mist lubrication systems. They can also operate under heavy thrust loads when used to support the bearings.

Abstract: An oil scavenge system includes a tangential scavenge scoop and a settling area adjacent thereto which separately communicate with a duct which feeds oil into an oil flow path and back to an oil sump. A shield is mounted over the settling area to at least partially shield the collecting liquid oil from interfacial shear. A multiple of apertures are located through the shield to permit oil flow through the shield and into the duct. The scavenge scoop forms a partition which separates the duct into a first portion and a second portion. The first portion processes upstream air/oil mixture that is captured by the tangential scoop while the second portion receives the oil collected in the settling area.

Abstract: The present invention provides a grease-enclosed bearing, for an inverter-driving motor, which is inexpensive and capable of effectively restraining damage from being generated by electrolytic corrosion. The grease-enclosed bearing for the inverter-driving motor has an inner ring (2), an outer ring (3), a plurality of rolling elements (4) disposed between the inner ring (2) and the outer ring (3), and a sealing member (6) covering both axial ends of the inner ring (2) and the outer ring (3). A grease (7) is enclosed on peripheries of the rolling elements (4). The grease (7) contains a base grease consisting of a base oil and a thickener and an additive, containing at least an electrolytic corrosion retarder, which is added to the base grease. The grease (7) is enclosed on peripheries of rolling surfaces of the bearing. The mixing ratio of the electrolytic corrosion retarder for 100 parts by weight of the base grease is set to 0.05 to 10 parts by weight.

Abstract: A motor (10) for a vehicle includes a stator assembly (14) and a rotor assembly (16). Bearing structure (20, 22) support the rotor assembly to permit rotation of the rotor assembly with respect to the stator assembly. A shaft (30) is threadedly engaged with the rotor assembly and is constructed and arranged such that rotation of the rotor assembly causes linear movement of the shaft. A perfluoropolyether (PFPE) based lubricant (38), having an thermal functionality upper temperature limit of over +200° C., lubricates at least the bearing structure.

Abstract: A spindle for a machine-tool, especially an engine spindle, includes a housing for receiving an electric engine, a shaft received in bearing elements and driven by the electric engine, and especially a tool receiving element for a tool for machining workpieces, at least one bearing element including a capillary feeding line for supplying lubricant via a pump element. A bearing element for one such spindle includes at least one recess for receiving a capillary feeding line for supplying lubricant via a pump element. A method for operating one such spindle for a machine-tool carries out a temporal and/or quantitative dosing of lubricant according to the evaluation of a sensor element, in order to sufficiently lubricate at least one bearing element.

Abstract: A needle roller bearing (21) as a roller bearing comprises an outer ring (22) formed by connecting a plurality of arc-shaped outer ring members in a circumferential direction, and a plurality of needle rollers (23) arranged along the inner diameter surface of the outer ring (22), and an oil groove (22i) extending in a circumferential direction so as to contain a position opposed to an opening (13e) of an oil path of a housing is formed in the outer diameter surface of the outer ring member.

Abstract: A bearing housing for a gas turbine engine comprises: a bearing housing body having a bearing cavity defined therein and at least one of a built-in lubricant nozzle and a built-in scavenge hole defined therein and in fluid communication with the bearing cavity.

Abstract: A roller assembly having a roller tube, a fixed shaft inside the roller tube, a bearing mounted on the shaft, an inner casing mounted on the bearing and rotatable with respect to the shaft, an outer casing fixedly mounted on the shaft, a shield cap mounted on the inner casing, and a seal member mounted between the roller tube, the shield cap and the inner casing for sealing the roller assembly. Facing walls of the inner casing and outer casing define inner cells and a first labyrinth path for reducing migration of contaminants through the inner cells. Facing walls of the outer casing and shield cap define outer cells and a second labyrinth path for reducing migration of contaminants through the outer cells. The facing walls of the outer casing and shield cap are provided with gel for further reducing migration of contaminants through the outer cells.

Abstract: In a tool spindle device, a tool head is slidably guided along guide members on a support table and is movable by a tool head feed mechanism. A tool spindle with a machining tool such as grinding wheel attached thereto is rotatably supported through antifriction bearings in the tool head. A lubrication mechanism is provided in the tool head for lubricating the antifriction bearings with oil air or oil mist. A space section is formed between the support table and the tool head to house the tool head feed mechanism and the guide members therein. A release passage is provided for releasing the oil air or the oil mist after lubricating the antifriction bearings, into the first space section therethrough to lubricate the tool head feed mechanism and the guide members housed in the space section.

Abstract: There is provided a rolling bearing including an inner ring having an inner ring raceway surface, an outer ring having an outer ring raceway surface and a shoulder portion formed on one axial side of the outer ring raceway surface, a plurality of rolling elements which roll between the inner ring raceway surface and the outer ring raceway surface, and a cage adapted to hold the plurality of rolling elements at predetermined intervals in a circumferential direction and having a guided surface which confronts the shoulder portion of the outer ring in such a manner as to be brought into sliding contact therewith. The rotation of the cage is guided through sliding contact of the guided surface of the cage with a guiding surface of the shoulder portion of the outer ring. A guiding space which is a radial space between the guiding surface of the shoulder portion of the outer ring and the guided surface of the cage is made to increase as approaching the rolling elements.

Abstract: The invention describes a bearing element (1), comprising a protective layer (2), a bearing metal layer (3) applied over the protective layer (2) and a sliding layer (4) applied by sputtering over the bearing metal layer (3). A sliding paint layer (5) is applied onto the sliding layer (4).

Abstract: The present invention provides water-resistant grease which improves the resistance to peeling which occurs from the surface of a bearing composed of carbon steel for machine structural use or the like even in a strict lubricating condition in which water may penetrate into the water-resistant grease during the operation of the bearing, and a rolling bearing and a hub bearing which use the water-resistant grease and have a long life. The water-resistant grease is composed of non-water-based base oil, a thickener, and a water dispersant used as an additive. The saturated amount of water dispersible in the water-resistant grease is 30 to 60 wt %. The water dispersant capable of dispersing the water in the water-resistant grease is a surface active agent. The non-water-based base oil is mineral oil. The thickener is a urea-based compound. The present invention also provides a rolling bearing and a hub bearing in which the water-resistant grease is enclosed.

Abstract: It is aimed to increase the rigidity of an angular contact ball bearing of the type in which each ball contacts at least one of the raceways at two points, improve the lubricating environment of the balls, reduce the weight of the bearing while maintaining wear resistance and rigidity of the balls, reduce the weight of the bearing while maintaining wear resistance of the balls, improve the radial rigidity and axial rigidity of the bearing in a balanced manner, or to supply a sufficient amount of lubricating oil into an internal area between the two contact points between each ball and the raceway. A counter portion 7 is formed. With each ball 6 in contact with the raceway at two points, a gap is present between the portion of the bearing ring at the bearing centerline C and each ball 6. The balls 6 may be ceramic balls. A coating for improving wear resistance may be applied to the balls.

Abstract: To provide a rolling bearing assembly, in which a grease filled within the bearing assembly is utilized to achieve a high speed feature, a long life and a maintenance-free and a lubricant oil can be stably supplied from a minute gap, a stepped face continued from the raceway surface is provided in a stationary raceway ring unit of an inner and outer ring units in a direction away from rolling elements. A gap forming piece having a free end confronting the stepped face is provided to define therebetween a flow passage and a grease reservoir communicated with the flow passage. The rolling bearing assembly is so designed that a heat cycle can be induced in the grease reservoir and, base oil of the grease can be urged to flow out from the gap by the effect of a pressure variation caused by the temperature rise.

Abstract: A bearing device includes: an inner ring member through which a shaft is passed and which is supported rotatably about an axis of the shaft and includes an inner ring raceway surface; an outer ring member arranged concentrically with the inner ring member and including an outer ring raceway surface; a plurality of rollers arranged rollably between the inner ring raceway surface and the outer ring raceway surface; a lubricating path through which lubricant is supplied to at least one of the inner ring raceway surface and the outer ring raceway surface; and a lubricating device which supplies the lubricant to the lubricating path according to rotating speed of the inner ring member about the axis.

Abstract: A rotary bearing system that supports a shaft for rotating machinery in a housing comprises: at least one stationary rotary bearing mounted in the housing for supporting a respective journal of the shaft in a desired axial and radial alignment; at least one slidable rotary bearing, with an outer surface mounted within a respective inner support surface of the housing to form a respective linear bearing such that each slidable bearing may slide axially along the inner support surface of the housing, for supporting another respective journal of the shaft with the desired radial alignment; and at least one layer of a crystalline material that exhibits a high degree of basal cleavage bonded to at least one of the linear bearing surfaces; wherein each layer of crystalline material allows each slidable rotary bearing to slide axially along each respective linear bearing to compensate for differences in the coefficient of expansion of the housing and the shaft so as to prevent the bearing system from binding due to

Abstract: A linear guide device comprises a rail, at least a slide member and multiple rows of rolling elements. The slide member comprises a rigid body; a bottom frame; a pair of end caps and a pair of reinforce plates. The rail and rigid body provide multiple rows of raceways opposed for the rolling elements. The bottom frame contains a plurality of lubricant reservoirs with lubrication pads inside and directly outstretch from the openings of said lubricant reservoirs to contact with the rolling elements in the raceway zone to supply lubricant on the rolling elements continuously. There are passages or tubes, having lubricating string inside, connecting the extending lubricant reservoirs. Two reinforce plates, each having two extending plates folded and stretched to the bottom of the two leg portions of the rigid body, and are attached on two end caps.

Abstract: An exemplary housing for a turbocharger includes a substantially cylindrical bore having a longitudinal axis, an inner diameter, a proximate end and a distal end; a counterbore positioned at the distal end, substantially centered on the longitudinal axis and having an inner diameter; a plate attachment mechanism at the proximate end for attachment of a plate including an opening substantially centered on the longitudinal axis and having an inner diameter wherein the inner diameter of the cylindrical bore exceeds the inner diameter of the counterbore and the inner diameter of the opening of the plate; and a pin opening to the cylindrical bore positioned substantially at the inner diameter of the bore, the pin opening capable of receiving a pin. Various exemplary bearing cartridges, housings, assemblies, etc., are also disclosed.

Abstract: A vacuum pump includes a housing assembly having an oil-reservoir chamber in which a lubricating oil is stored; a pair of screw rotors disposed in the housing assembly and engaged with each other; a pair of rotary shafts connected to the rotors, respectively; a plurality of bearings supporting each of the rotary shafts and having an opening; an oil-feed pump for feeding the lubricating oil from the oil-reservoir chamber to the bearing; an oil-circulation passage provided for circulating the lubricating oil from the oil-feed pump to the oil-reservoir chamber through the bearing; a cover provided at the opening of the bearing to close the opening of the bearing with a clearance remained, the cover permitting the lubricating oil to enter the bearing through the clearance; and an oil-escape passage provided adjacent to the bearing for returning to the oil-reservoir chamber the lubricating oil not entering the bearing.

Abstract: A rotary apparatus comprises a non-rotary part, a rotary shaft, a rotary member between the rotary shaft and the non-rotary part, an inside bearing between the rotary shaft and the rotary member, and an outside bearing between the rotary member and the non-rotary part. The inside bearing comprises first and second inside bearings spaced along a direction of a central axis of the rotary shaft. The outside bearing comprises first and second outside bearings spaced along the rotary shaft. An outer ring of the first inside bearing and an inner ring of the first outside bearing, and an outer ring of the second inside bearing and an inner ring of the second outside bearing, are fixed on the rotary member. By interlocking of the bearings, the rotary member slightly moves along the central axis, and at least two of the bearings receive respective preloads with a linkage relationship.

Abstract: A pivot bearing has a radially inner bearing part; a radially outer bearing part, each of the parts defining a conduit for permiting a lubricant to pass through, the radially inner bearing part being supported in a rotary fashion on the radially outer bearing part, a transmission element that communicates the conduits of the parts to permit a lubricant to pass through; and a check valve dividing the conduits into a radially inner conduit system and a radially outer conduit system.

Abstract: A configuration for feeding a lubricant to a lubrication point on a revolving part of a printing technology machine includes a stationary lubricant container and a conveying device for conveying lubricant out of the container to the revolving part. A sealed antifriction bearing on the revolving part has a bearing ring fixed against rotation. At least one lubricant feed duct extends to a bearing chamber for antifriction elements of the antifriction bearing. At least one lubricant duct in the revolving part leads from the antifriction bearing to the lubrication point.

Abstract: The waterproof grease composition of the present application comprises a base oil that comprises at least one of mineral oil and synthetic oil and having a kinematic viscosity of from 10 to 400 mm2/sec at 40° C., a thickener, and a waterproofness-imparting agent selected from surfactant, metal soap, fluorine-containing water repellent, silicone-type water repellent, pH-controlling agent, wax, polymer and graphite. Accordingly, it may prevent peeling such as white structure peeling even when water is mixed therein.