Abstract: A motion guide device has a moving block mounting surface 501 of an end plate 5 formed in a planar shape and a thinned-down portion 52 formed in an opposing moving block mounting surface 502. Moreover, in this motion guide device, a lubrication path 30 includes: a first lubrication path 30a formed extending in a horizontal direction from a surface of side surfaces parallel to a longer direction of a track rail 1 in the end plate 5 to a central portion of the end plate 5; a second lubrication path 30b formed in the central portion of the end plate 5; and a third lubrication path 30c connected to the second lubrication path and formed in a groove shape in the moving block mounting surface 501 of the end plate 5, and, moreover, the first lubrication path 30a is formed in a hollow shape continuous to inside a built-up portion 52a appended to the thinned-down portion 52 of the end plate 5.

Abstract: A self-lubricating structure such as a bearing having a low coefficient of friction, a high bearing load capability, and a low abrasiveness is provided. The self-lubricating bearing has a PTFE-based sliding layer that is bonded to a metal backing layer. The sliding layer includes a PTFE-based matrix, self-lubricating fillers such as liquid crystalline polymer, and high temperature reinforcing fiber such as carbon fiber. A method for producing the self-lubricating bearing is also provided.

Abstract: A self-lubricating structure such as a bearing having a low coefficient of friction, a high bearing load capability, and a low abrasiveness is provided. The self-lubricating bearing has a PTFE-based sliding layer that is deposited on a metal backing layer. The sliding layer includes a PTFE-based matrix, self-lubricating fillers such as liquid crystalline polymer, and high temperature reinforcing fiber such as carbon fiber. A method for producing the self-lubricating bearing is also provided.

Abstract: A seal for an opening of a bore in a component, with a threaded screw, around a core shaft of which a helical screw thread is arranged. The screw engages in the bore and the thread creates a mating thread in a wall of the bore. The diameter of the bore is larger than the diameter of the core shaft. A helical channel, which is located between the core shaft of the screw and a wall of the bore, and which is delimited by the thread, is interrupted at a minimum of one point in a liquid-tight and/or gas-tight manner.

Abstract: A lubricant can be evenly applied onto raceway faces or raceway grooves of a rail even when fixed to a horizontal, vertical, tilted, or ceiling surface. One or a plurality of embedding portions (26e) having a recess or a hole is formed in a member body (26) straddling the rail (R). An impregnation holding member (30) holding a lubricant is embedded in the embedding portion. The lubricating member supplies the impregnating lubricant onto the rail raceway faces while making contact with them. Even when the rail is fixed to a horizontal, vertical, tilted or a ceiling surface, the embedding portion of the member body straddling the rail has at least a part maintained in position at a level equal to or higher than the level of at least a part of one of the raceway sections (21a, 21b) of the rail located higher relative to the other raceway section.

Abstract: A linear motion guide unit is provided which is downsized in size, maintenance-free for lubrication, and makes it possible to assemble easily and quickly the slider with accuracy. The end cap has outward end surfaces each of which is concaved to provide a first recess to fit over a lubricant applicator of porous compact to apply the rollers while running through the turnaround passages, and a second recess to fit over a retainer plate. The retainer plate is surrounded with a peripheral edge of the end cap and held in place with a snap-fit engagement with the end cap to squeeze the lubricant applicator inside the first recess in the end cap.

Abstract: Lubrication for rolling elements is carried out in a turnaround passage in an end cap. An applicator nose to come into touch with the rolling elements has a molding density greater than in a lubricant reservoir plate to ensure proper and steady lubrication, with accompanying sustainable maintenance-free condition for lubrication. The lubricant reservoir plate impregnated with lubricant fits into a concavity inside the end cap. The applicator nose is integral with the lubricant reservoir plate and extends through a hole cut in the end cap to reach a turnaround passage to be exposed at a leading edge thereof to the rolling element to resupply the lubricant around the rolling elements.

Abstract: A motion guide device that has a novel damping structure different from the conventional damping structure is provided. The present invention comprises a raceway member (1) having a rolling-element rolling part (1a); a moving member (2) having a loaded rolling-element rolling part (2a) facing the rolling-element rolling part (1a) and being allowed to make a linear or curved movement relatively to the raceway member (1); and a plurality of rolling elements (3) intervening between the rolling-element rolling part (1a) of the raceway member (1) and the loaded rolling-element rolling part (2a) of the moving part (2). A gap (16) between the raceway member (1) and the moving member (2) is filled with a layer of oil contacting the raceway member (1) and the moving member (2). Viscosity resistance of the oil is utilized to apply a braking force to the moving member (2) or the raceway member (1) in proportion to a speed.

Abstract: A displaceable carriage (10) and a linear guide for guiding the carriage, which includes a first guide path slideway (13, 31) and a second guide path slideway (32). To form the first slideway (13, 31), the carriage (10) includes at least one pocket (13), which slides along the first guide path part (31) and can hold lubricant under pressure to create a relieving force on the carriage (10). The second guide path part (32) includes an island-shaped surface to create a frictional force on the carriage (10). A pressure medium held in the at least one pocket (13, 14, 15) creates the relieving force, whereby the first slideway (13, 31) relieves the load on the second slideway (11a, 12a, 12b, 32).

Abstract: A self-lubricating mechanism of slide member, including a slide assembly and a lubricating section. The slide assembly has a linear guide section, a slider linearly slidably mounted on the guide section and reciprocally movable between a first position and a second position and at least one rolling section positioned in a space defined between the slider and the guide section. The lubricating section has a main body fixedly disposed on one side of the slider. The main body is formed with an internal oil reservoir and at least one passage in communication with the oil reservoir. The passage has an opening formed on a first side of the main body in communication with the space. A push body is retractably disposed on the main body. A stopper body is fixed in a position adjacent to the first position for retracting the push body to drive the oil into the space.

Abstract: The invention provides a low-friction sliding mechanism, a low-friction agent composition, a friction reduction method, a manual transmission and a final reduction gear unit that can exert very excellent low friction characteristics to sliding surfaces present under various applications, and, in particular, that have more excellent low friction characteristics than that of a combination of an existing steel material and an organic Mo compound. The low-friction sliding mechanism has an oxygen-containing organic compound or an aliphatic amine compound interposed between sliding surfaces that a DLC coated sliding member and a sliding member form. The low-friction agent composition contains an oxygen-containing organic compound or an aliphatic amine compound. The friction reduction method includes supplying the low-friction agent composition between sliding surfaces that a DLC coated sliding member and a sliding member form.

Abstract: A self lubricated bearing contains a first member, a second member configured to slide against the first member, and a lubricating liner disposed in a sliding contact area between the first member and the second member. The lubricating liner contains at least one structural polymer and at least one lubricant with viscosity less than 5100 centistokes. A method is also provided for making the bearings, which includes adding the at least one lubricant with viscosity less than about 5100 centistokes to one or more components of the lubricating liner during the process of making the liner or bearing. The self lubricated bearing compositions of the invention have surprisingly long service lives versus prior art self lubricated bearings.

Abstract: Provided is a guide device for a sliding unit used in a sliding-type portable terminal. The guide device includes a slide lower portion, a guide plate, a slide plate integrally engaged with a bottom surface of the slide lower portion, the slide plate sliding while being confined in the guide plate in a way to face the guide plate, and a plurality of lubrication members provided with intervals therebetween in a longitudinal direction of the guide plate to facilitate sliding of the slide plate. The guide device achieves slimness and lightweightness while maintaining mechanical stiffness.

Abstract: A hydrostatic mounting of longitudinally displaceably arranged machine parts, which have pressure pockets for hydraulic fluid for building up a hydrostatic pressure between two machine parts, gaps connected to the pressure pockets and delimited by gap faces of the two machine parts, a drainage for the reception of hydraulic fluid flowing out from the gaps, and a seal, arranged effectively between the machine parts and surrounding the gaps, sealing against the escape of hydraulic fluid. An environment-side portion of the seal is at the same time a portion of the drainage creating a double-acting portion. The double-acting portion of the seal is formed from a material permeable to the hydraulic fluid.

Abstract: A lubricating device for a linear rolling bearing which has a guide rail and a carriage that is longitudinally moveable on the guide rail and supported on the guide rail by rolling bodies. The rolling bodies are guided in longitudinal grooves along the guide rail, and the lubricating device is fastened to the carriage and lubricate the longitudinal grooves and/or the rolling bodies. The lubricating device also has lubricant supply ducts, which supply a lubricant to the longitudinal grooves and clear outlet openings in the region of the longitudinal grooves for transferring the lubricant to the longitudinal grooves. The lubricant supply ducts are covered by at least one absorbent repository element along the courses thereof in coverage areas. The repository element is designed and/or arranged to absorb lubricant in the coverage areas and to conduct it to the longitudinal grooves in parallel with the lubricant supply channels.

Abstract: A low-friction sliding mechanism includes first and second sliding members having respective sliding surfaces slidable relative to each other and a lubricant applied to the sliding surfaces of the first and second sliding members. At least the sliding surface of the first sliding member is made of a diamond-like carbon material, and at least the sliding surface of the second sliding member is made of either an aluminum-based alloy material, a magnesium-based alloy material or a diamond-like carbon material. The lubricant contains a base oil and at least one of an ashless fatty-ester friction modifier and an ashless aliphatic-amine friction modifier.

Abstract: A linear motion guide unit is disclosed in which an end cap of a slider has a tube therein to feed even minor amounts of lubricant into a circulating circuit for rollers with no lubricant leakage, making sure of positive lubrication irrespective of working orientations or postures of the linear motion guide unit. A flexible tube made of fluorocarbon polymers is installed in the end cap to run from a lubricant inlet to a turnaround passage, thereby providing a lubricant-supply passage. A distal end of the tube fits into a three-way member made open to the turnaround passage on a spacer part, which is nested inside the end cap.

Abstract: Provided are a motion guide device and a screw device each having a cover for protecting the device against moisture, such as coolant, and powder dust. The motion guide device has a raceway member 11, a moving member main body 21 mounted on the raceway member 11 through a plurality of rolling elements and cap members 22 attached to respective end surfaces of the moving member main body 21 in a relative moving direction. A seal cover 50 is provided having a cover main body 51 that covers each of the cap members 22 and a seal section 55 that is provided between the cover main body 51 and a cap member-side end surface of the moving member main body 21 to stop a gap between the cap member-side end surface of the moving member main body 21 and the cover main body 51. This structure makes it possible to reliably prevent any foreign material, such as powder dust or swarf, and moisture, such as coolant, from getting into the inside of the moving member 20.

Abstract: A bearing element is provided which has at least three individual annular segments which are each combined to form a homogeneous, inherently fixed bearing element. The individual annular segments each abut against at least two further annular segments and are interconnected by connecting means.

Abstract: By reducing the component count, a more compact linear motion guide unit having sealing structures capable of maintaining high sealing performance between slider and guide rail over a long term is realized. A rubber-made end seal, attached to each end face of a slider slidably straddling a guide rail, has a lip portion integrally formed on a contact face with the guide rail, and a recessed portion formed in a face opposite to a mounting face attached to the slider. A positional relationship is determined such that the lip portion is located closer to the slider than the recess bottom face is. An oil-impregnated wiper seal is mounted in the recessed portion of the end seal. A scraper is disposed along the outer side of the wiper seal mounted in the recessed portion, so that the wiper seal is fixedly interposed between the scraper and the recess bottom face.

Abstract: A motion guide device is provided, which is able to not only lubricate rolling-element rolling surfaces with the use of a technique totally different from conventional lubricating techniques but also maintain a lubricating capability over a long period of time. The motion guide device for use in the vacuum environment a track member (1) having a rolling-element rolling part (1a), a moving member (2) having a rolling-element circulation passage containing a loaded rolling-element rolling part (2a) facing the rolling-element rolling part (1a) and being movable relatively to the track member (2), a plurality of rolling elements (3) placed in along the rolling-element circulation passage, and a lubricant storing member storing lubricant, which member is attached to the moving member (2) without contacting the track member (1). The lubricant storing member is exposed in a space formed between the track member (1) and the moving member.

Abstract: A solid lubricating composition having resin material is disposed between an outer ring and an inner ring of a ball bearing. As the resin material contained in the solid lubricating composition, resin material having a property of being solidified when the resin material in a fluid state is irradiated with an ultraviolet beam is used.

Abstract: The present invention relates to a lubricating element (12) for rolling element tracks, in particular linear systems, with a body composed of a lubricant-storing material, which includes an application section (34) capable of being brought in contact with a rolling element bearing surface to supply lubricant, and which includes a storage region (22) for lubricant that abuts the application section (34), the body being provided with at least one recess (38) in the storage region (22), on an end opposite to the application section (34).

Abstract: The sliding bearing has a metallic outer ring and a self-lubricating liner formed on the inner circumferential surface of the outer ring. The self-lubricating liner has a self-lubricating resin composition consisting of a mixture of 60 to 80% by weight of polyetherketone-based resin, 10 to 30% by weight of polytetrafluoroethylene, 5 to 15% by weight of carbon fiber and not more than 15% by weight of aramid fiber, total amount of the carbon fiber and the aramid fiber being 10 to 25% by weight. The inner circumferential surface of the outer ring has a surface roughness in terms of center line average roughness not less than Ra 4.0 ?m and a surface roughness in terms of maximum height not less than Rmax 30.0 ?m; and the outer ring and the self-lubricating liner are unified. A method of producing the bearing is also provided.

Abstract: High surface pressure is applied to the sliding surfaces such that local solid contact occurs on sliding interfaces. Microscopic wear occurs on the sliding surfaces. Carbon-based molecules 12, having rollable hollow structures, are included as separate molecules or aggregates of molecules in the lubricating film 11. The molecules 12 are exposed from the lubricating film 11 by the microscopic wear. A portion of the carbon-based molecules 12 is separated from the lubricating film 11, and supplied to the sliding surfaces. The carbon-based molecules 12 having rollable hollow structures function as ball bearings on the molecular level on the sliding interfaces. When at least one separated carbon-based molecule 12 exist between the sliding interfaces, local friction can be reduced in comparison to when separated carbon-based molecule 12 does not exist.

Abstract: The invention relates to a telescopable steering spindle having an inner spindle and an outer spindle, which are arranged coaxially in relation to one another and have an out-of-round cross section for torque transmission, wherein an intermediate space is provided between the outer spindle and the inner spindle, a sliding sleeve being arranged in the said intermediate space, wherein the sliding sleeve is provided with a surface structuring on at least one surface facing the inner spindle or the outer spindle.

Abstract: A tribosystem for radial and axial foil bearings includes a first structural component part; and a second structural component part interacting with the first part. The first and second parts are in a dry frictional unidirectional sliding contact with one another until an air film is formed. A surface of at least one of the first and second parts being exposed to the dry frictional contact contains at least partly at least one of a metallic bound (Ti,Mo)(C,N), Tin-2Cr2O2n-1 with 6?n?9 and solid solution of TiO2—Cr2O3.

Abstract: The present invention relates to a linear guide rail (10) suitable for co-operating with a slider (12). The contact between the linear guide rail and the slider is obtained by means of rolling elements (14). The guide rail is made of drawn steel and comprises holes (18) for operational assembly, and raceways (16) suitable for making contact with the rolling elements. The surface of the raceways is smoothed by means of abrasive tools. The surface of the guide is treated using nitriding, post-oxidation and micro-lubrication processes.

Abstract: An exemplary multi-piece bearing for a turbocharger includes a cylindrical piece that has a coefficient of thermal expansion, opposing ends and an outer surface and an inner surface that extend between the opposing ends where the outer surface includes one or more lubricant openings; an end piece that has a different coefficient of thermal expansion and a face where the face includes one or more lubricant openings; and lubricant passages formed by the cylindrical piece and the end piece for passage of lubricant between the one or more lubricant openings of the outer surface of the cylindrical piece and the one or more lubricant openings of the face of the end piece. As described herein, such an exemplary multi-piece bearing can, upon selection of coefficients of thermal expansion, help maintain axial clearances between various components during operation of a turbocharger. Other exemplary bearings, arrangements and methods are also disclosed.

Abstract: An automatic lubrication structure of slide mechanism. The automatic lubrication structure includes a guide section, a slide section slidably disposed on the guide section, and a lubricating section fixedly disposed on the guide section. The lubricating section has an oil reservoir with an internal cavity for containing therein a lubricant or the like. The lubricating section further has a communication passage and multiple oil-filling holes formed on lateral sides of the guide section in contact with the slide section. The cavity communicates with the oil-filling holes via the communication passage. The slide section is movable to push a push member for making the lubricant or the like contained in the cavity spill out of the oil-filling holes so as to provide lubrication effect for contact faces between the guide section and the slide section.

Abstract: A platform with automatic lubrication mechanism. The platform includes at least one platform assembly. The platform assembly has at least two guide sections, at least two slide sections respectively slidably disposed on the guide sections, and at least two lubricating sections fixedly disposed on the guide sections. Each lubricating section has an internal cavity for containing therein a lubricant or the like, and an oil-filling passage extending from the cavity to the guide section to communicate with openings formed on one side of the guide section. Through the oil-filling passage, the cavity communicates with an exterior of the guide section. The slide section is movable to push a push member for making the lubricant or the like contained in the cavity spill out of the openings to provide lubrication effect between the guide section and the slide section.

Abstract: An assembly for coupling a track with a base extrusion via a support extrusion and a wedge assembly. A double-edged support extrusion for coupling a track with a guide wheel via a wedge assembly according to some embodiments of the invention. Methods for assembling an assembly for coupling a track with a base extrusion via a support extrusion and a wedge assembly and a double-edged support extrusion for coupling a track with a guide wheel via a wedge assembly.

Abstract: A self-lubricating mechanism of slide member, including a slide assembly and a lubricating section. The slide assembly has a linear guide section, a slider linearly slidably mounted on the guide section and reciprocally movable between a first position and a second position and at least one rolling section positioned in a space defined between the slider and the guide section. The lubricating section has a main body fixedly disposed on one side of the slider. The main body is formed with an internal oil reservoir and at least one passage in communication with the oil reservoir. The passage has an opening formed on a first side of the main body in communication with the space. A push body is retractably disposed on the main body. A stopper body is fixed in a position adjacent to the first position for retracting the push body to drive the oil into the space.

Abstract: A slider for a linear motion rolling guide unit can ensure a smooth rolling movement and a reliable lubricating capability and eliminate the need for accurate dimension control to reduce the manufacturing costs. A turning corner 9 in an end cap 2 is made up of a pair of arced paths 9c connecting with a rolling path in the casing 1, and a straight path 9d providing a connection between the arced paths 9c and extending in a direction approximately perpendicular to the rolling path. The lubricating member A mounted in the end cap 2 has a lubricating face 18a exposed to the linear path 9d, and maintains a relation of the lubricating face 18a intersecting the outer peripheral faces of the arced paths 9c. A recessed area 19 is formed between the outer peripheral face of each arced path and the lubricating face 18a in a surplus length region extending outward from the intersection between the lubricating face 18a and the outer peripheral face of the arced path 9c.

Abstract: A lubricating member is capable of being used in any type of linear motion rolling guide unit and of appropriately lubricating raceway faces over a long period. The lubricating member used in a linear motion rolling guide unit comprises a body 4 impregnated with a lubricant and being in contact with raceway faces of a rail to supply the lubricant to the raceway faces. The body 4 comprises either a single or a plurality of embedding portions 8 having either a recess or a hole. A saturation holding member 9 is embedded in the embedded portion 8. The saturation holding member 9 holds a larger amount of lubricant per unit volume than the body 4 holds the amount of lubricant, and has a relationship ensuring that it has a force sucking the lubricant equal to or smaller than that the body 4 has.

Abstract: Lubrication points of lubricant around a rolling element are made in a turnaround passage to ensure proper and steady lubrication by the lubrication system simple in construction, with accompanying sustainable maintenance-free condition for lubrication. The end cap has a recess as large as permitted and a hole to communicate the recess with the turnaround passage. A porous compact is composed a thick block to fit into a deep cavity in the recess, a nose leading lubricant in the turnaround passage, and a conjunctive part between the thick block and the nose. The porous compact fits snugly into the recess in a fashion that the nose comes into rolling-touch at its tip with the rollers as they roll through the turnaround passage.

Abstract: In a linear guide device, a rolling element cage 24 holding balls interposed between a rail side rolling element rolling groove and a slider side rolling element rolling groove is formed of a synthetic resin material, and has two plate parts 244 facing to each other with a slider body being held therebetween. The rolling element cage 24 has a positioning part that makes contact with the inside surface of the slider body and is positioned on the slider body by the positioning part with respect to the slider.

Abstract: A hydrodynamic bearing device, comprising a shaft structure, a sleeve, a dynamic pressure-generating groove which is formed on surface of at least one of a shaft structure and a sleeve, and a lubricant present in a gap between the shaft structure and the sleeve; wherein the lubricant contains a diester with a total carbon number of 20 to 28 obtainable by a divalent alcohol that has three ether bond, and one or more types of a saturated monovalent fatty acid with carbon number of 6 to 10.

Abstract: A guide apparatus including a track rail and a moving block is free from the possibility of foreign matter entering the moving block through the gaps between the side surfaces of the track rail and the inner side surfaces of the moving block even in an environment where many fine dust particles are flying. A guide apparatus has a track rail and a moving block 20 relatively movably attached to the track rail with rolling elements interposed therebetween. The rolling elements recirculate through rolling element recirculation passages. Foreign matter entry preventing plates 34 are provided so that their respective distal ends longitudinally contact the opposite side surfaces of the track rail to close the gaps between the side surfaces of the track rail and at least the inner side surfaces of skirt portions on both sides of a moving block body 21 and the inner side surfaces of end plates of the moving block 20.

Abstract: Provided is a sintered bearing with oil for a spindle motor. The bearing is characterized in that at least one portion of upper and lower sides of the bearing is denser than other portions of the bearing.

Abstract: The invention relates to a bearing arrangement (1), comprising at least one grease-lubricated bearing (2, 3) with a bearing region (4, 5) where rolling elements or a sliding element (6, 7) are arranged. To improve the assembly and the lubrication of the bearing arrangement, the invention is characterized in that at least one oil-collecting element (8, 9) is arranged near the bearing (2, 3), wherein a transport element (10, 11) connects the oil-collecting element (8, 9) with the bearing region (4, 5).

Abstract: There is provided a slide structure that is capable of reliably suppressing wear of an amorphous carbon film caused by chemical reactions between the amorphous carbon film and an organic molybdenum compound. A slide structure 1 comprising at least: a pair of slide members 20, 30 in which an amorphous carbon film 22 is formed at a sliding surface 23 of, of the pair of slide members 20, 30 that slide relative to each other, one slide member 20; a lubricant 40 that is present between the pair of slide members 20, 30, and that contains at least molybdenum dialkyldithiocarbamate 41 as an organic molybdenum compound, wherein a hard film 32 that does not contain the oxygen element is formed at a sliding surface 33 of the other slide member 30.

Abstract: A linear device has an essentially rod-shaped functional unit and a functional unit that at least partially encompasses the rod-shaped functional unit and includes a main body and at least one end plate unit that rests with a contact surface against the main body in which a lubrication groove is provided, which is open toward the contact surface and extends at least partially in the circumference direction around the rod-shaped functional unit, and it is possible to fasten the end plate unit to the main body by only two fastening elements, and a region of the contact surface adjacent to the lubrication groove and encompassing this lubrication groove is raised in relation to the rest of the contact surface.

Abstract: It is an object of the present invention to provide a rolling bearing in which efficacy provided by an auxiliary agent for grease can be maintained for a long time to extend its life and a seal for the rolling bearing. A rolling bearing (1) has an inner ring (2); an outer ring (3); a plurality of rolling elements (4) interposed between the inner ring (2) and the outer ring (3); a retainer (5) retaining the rolling elements (4); and a seal (6) provided at an open portion, of the inner ring (2) and the outer ring (3), which is disposed at both axial ends thereof. The rolling bearing (1) is lubricated with a grease (8) enclosed in a space, inside the bearing, which is constructed of the inner ring (2), the outer ring (3), the retainer (5), and the seal (6). A mixture (7) of an auxiliary agent for the grease and a resin is fixed to a surface, of the seal (6) (one of the members constructing the space inside the bearing), which is disposed at a side of the space inside the bearing.

Abstract: A slider for a linear motion rolling guide unit can ensure a smooth rolling movement and a reliable lubricating capability and eliminate the need for accurate dimension control to reduce the manufacturing costs. A lubricating member A has a lubricating face 20 exposed on an outer peripheral face of a turning corner 10 in an end cap 2. The rolling elements 11 are lubricated by making contact with the lubricating face 20 while rolling through the turning corner. The lubricating face 20, exposed on the arced face 10b of the turning corner, and the outer peripheral face of the turning corner maintain the relation of crossing each other at two intersections. The lubricating face 20 is longer than the distance between the two intersections. Recessed areas 21 are formed between the outer peripheral face of the turning corner 10 and the lubricating face 20 in the surplus length regions.

Abstract: A linear motion device has a first assembly and a second assembly which is linearly movable relative to the first assembly, in which at least one first rolling surface which extends in a longitudinal direction is provided on the first assembly, the first rolling surface being located opposite a second rolling surface provided on the second assembly, and in which a row of rolling elements is located between the first and second rolling surfaces, and in which a return passage that is substantially parallel to the first rolling surface is provided in the first assembly, the return passage being connected at either end via a curved deflection passage to the first rolling surface such that rolling elements are transferred, thereby enabling the rolling elements to circulate endlessly, and in which the first assembly includes at least one deflection assembly that may be installed as a whole, and that includes a single deflection passage, and the return passage is provided directly and completely in a separate first

Abstract: The invention provides a hydrodynamic bearing device including at least one of a shaft structure and a sleeve having a dynamic pressure-generating mechanism, and a lubricant present in a gap between the shaft structure and the sleeve. The lubricant contains a diester with a total carbon number of 20-28 obtainable by a divalent alcohol that has at least one ether bond, and one or more types of C6 to C10 saturated monovalent fatty acid.

Abstract: In a slide member in which an overlay is provided on a slide receiving surface of a base member, the overlay is formed by attaching a mixed solid lubricant on the slide receiving surface of the base member. The mixed solid lubricant is made by mixing a large amount of hydrogen containing solid lubricant which contains a large amount of hydrogen, and a small amount of hydrogen containing solid lubricant which contains a smaller hydrogen amount than the large amount of hydrogen containing lubricant. Thereby, a lubricant absence region where the solid lubricant is absent in a thickness direction is formed on the slide receiving surface of the base member after sliding, and an oxidized portion where the base member is oxidized is formed in the lubricant absence region.

Abstract: In a method of monitoring the operation of a plain bearing, a lubricant passage (15) of a bearing segment, this lubricating passage (15) being provided for jacking oil for example, is used during hydrodynamic operation of the plain bearing for extracting samples for a temperature measurement. For producing the measuring operation, a switch-over device (19) clears a flow path from the lubricant passage (15) into an outflow passage (23) in such a way that lubricant from the lubricating film (13) flows through the lubricant passage, the temperarature of this lubricant being determined by a temperature sensor (16, 18).

Abstract: A linear motion guide system is disclosed in which a clearance between a slider and a guide rail is closed truly to clear foreign matter away from entering inside the system through any end of the slider traveling on the guide rail. Thus, the linear motion guide system is befitting to severe working environment where much foreign matter occurs. A highly-tight sealing unit is comprised of a cassette constituted with a front panel and an enclosure, sealing plates stowed into the cassette, lubrication plates each interposed between any two adjacent sealing plates, and a rear panel to close an open edge of the enclosure. The sealing plates are each composed of an intermediate spongy medium flanked by skin layers and impregnated with lubricant. The lubrication plates have pores filled with lubricant.