Abstract: The apparatus 10 for electromagnetic energy transfer comprises a charging fixture 1 with a contact surface 4 and a generator coil 2 forming a resonator circuit with a capacitance. The charging fixture 1 is preferably arranged as an elongated bar whereon a plurality of chargeable electronic devices 5 can be arranged. In order to implement electromagnetic energy transfer from the charging fixture 1 to the electronic device 5 the latter has to be arranged with a pick-up circuit for generating secondary alternating current in a loop, preferably a secondary resonator circuit. In order to fix a position of the electronic device 5 on the charging bar 1, the charging bar is preferably arranged with a projection 3 extending in a plane of the contact surface 4. The electronic device 5 can be shaped to be hanged on the projection and removed from it in accordance with arrow 6.

Abstract: A channel module of a linear guideway includes a slider, two circulators, and two wire holders. The slider has two opposite inner loading surfaces. The circulators are respectively installed on two opposite sides of the slider and respectively connected to the inner loading surfaces. Each circulator includes an outer loading surface and two corner portions respectively extended from two opposite ends of the outer loading surface to two opposite ends of the corresponding inner loading surface. Each corner portion has a corner surface and a connecting surface. In each corner portion, an altitude difference is formed between an end of the corner surface connected to the connecting surface and the adjacent inner loading surface. The connecting surface is connected to the corresponding inner loading surface seamlessly for eliminating the altitude difference. The wire holders are respectively arranged adjacent to the inner loading surfaces.

Abstract: A guide carriage is configured for use with an elongate guide rail. The guide carriage has at least one row of spherical rolling bodies which are received in an associated endless circulatory channel. The circulatory channel has a load-bearing section and a return channel which are connected to one another at their ends which lie opposite one another via in each case one curved deflection channel. The load-bearing section is delimited by a carriage raceway extending in a longitudinal direction on the guide carriage and a rail raceway on the guide rail. A separate main body of metal is also provided. The carriage raceway is arranged on a separate raceway insert which bears against the main body. A separate rolling-body guide part is also provided which has a guide section extending in the longitudinal direction. The guide section engages behind the raceway insert.

Abstract: A re-circulating ball sliding support comprises an elongate rail and a slide cassette. The slide cassette includes structure that interacts with the rail to seal the sliding support assembly such that the ingress of dirt into the slide cassette is prevented, and any lubricant for the balls is retained within the slide cassette.

Abstract: A motion device (1) includes a track rail (10), a moving body (21), a plurality of rolling elements (70) rolling in an endless circulation passage formed at the track rail (10) and the moving body (21), a pair of lid bodies (50) attached to end surfaces of the moving body (21) in a movement direction thereof, and a connector cover body (80) disposed along a rolling element rolling surface (28) formed at the moving body (21) to cover a rolling element connector (72) connecting and holding the rolling elements (70). The connector cover body (80) has a frame-shaped cover member (86) which is fixed to the pair of the lid bodies (50) to be integrally disposed at both ends of the rolling element rolling surface (28) in a width direction thereof.

Abstract: A retainer of a linear guideway comprises a retaining member a supporting member. The retaining member has a base portion and two side wing portions integrally extended from the base portion. The base portion has a receiving groove, and each side wing portion has a positioning opening. One positioning opening is offset with respect to the receiving groove along a first direction, and another positioning opening is offset with respect to the receiving groove along a second direction opposite to the first direction. One side portion of the supporting member is wedged to the receiving groove of the base portion. Thus, the instant disclosure provides the retainer for positioning two staggered circulation tubes.

Abstract: A test head manipulator system comprising a base structure, a main arm unit configured to support a test head and to be moved relative to the base structure, an actuator having a range of motion of L, and an enhancement mechanism positioned between the main arm unit and the actuator and configured such that movement of the actuator a first distance causes the main arm unit to move a second distance that is greater than the first distance. Additionally, a fluid control system for controlling a test head manipulator system. The pneumatic control system includes a regulator configured to controllably provide an output pressure to the main fluid actuator, and a second fluidly controlled actuator configured to adjust the regulator to modify the output pressure provided to the main fluid actuator. The second actuator is configured to be positively positioned in at least four operating modes with each operating mode causing the regulator to provide a different output pressure to the main fluid actuator.

Abstract: A feeding device includes a storage mechanism and an adsorbing mechanism. The storage mechanism includes two side plates substantially parallel to each other, two support members slidably coupled between the two side plates, two driving members, and two feeding trays. The driving members are mounted to one of the two side plates and coupled to the corresponding support members. The driving members are configured to drive the two support members to move out of the storage mechanism one at a time. The feeding trays are configured for receiving workpieces and coupled to the corresponding support members.

Abstract: A rolling element bearing includes an outer member having an outer member interior surface and an outer member exterior surface. The bearing includes an inner member having an inner member interior surface and an inner member exterior surface and a plurality of rolling elements disposed between the inner member and the outer member. The bearing includes a plurality of random-length slug separators. The separators are of a first length, a second length or a third length, which are not equal. One of the plurality of random-length slug separators is disposed adjacent to at least one of the plurality of rolling elements. The plurality of rolling elements are non-rhythmically spaced apart.

Abstract: A linear actuator includes a slide, a first half return member, a second half return member and a slide block. The first and second half return members are hollow frames and sleeved onto the rail. A circulation path can be formed when the first and second half return members and the slide block are assembled together, the second half return member is directly disposed in the first radial gap of the first half return member, and the slide block is directly disposed in the second radial gap of the second half return member. Furthermore, there is no level difference in the first and second return grooves of the two half return members, which will prevent noise caused during movement of the rolling elements, reduce impact of the rolling elements against the circulation path, and therefore extending the life of the linear actuator.

Abstract: A six-row ball bearing linear guideway is provided with six rows of balls disposed between the slider and the rail. The six rows of balls are symmetrically disposed at two sides of the rail, the balls in the middle and upper rail rolling grooves bear and increase the load capacity in the downward direction. The balls in the lower rail rolling grooves bear a load in the upward direction, and the profile factor of the lower rail rolling grooves is smaller than that of the upper rail rolling grooves, thus the rated static load capacity in the upward direction is improved. The balls in the upper, middle and lower rail rolling grooves all serve to bear the load capacity in the lateral direction, thus the rated static load capacity in the lateral direction is improved. Hence, the rated static load capacity is improved in upward, downward and lateral directions.

Abstract: A linear motion guide device includes a slider slidably attached onto a guide rail, the guide rail includes a number of recesses and the slider includes a number of depressions aligned with the recesses of the guide rail for forming a number of ball rolling passages, the slider includes a number of grooves offset from the depressions, two end caps attached onto the slider and each include a number of passageways communicating with the grooves of the slider and the ball rolling passages for forming a number of endless ball guiding raceways between the slider and the guide rail and the end caps and for slidably receiving and engaging with the ball bearing device.

Abstract: A powertrain includes an engine, a transmission, a pump for providing pressurized hydraulic fluid and a launch clutch connected between the engine and the transmission for coupling the engine to the transmission when the launch clutch is in an engaged condition and for decoupling the engine from the transmission when the launch clutch is in a disengaged condition. A device is rotationally coupled to the engine and to the pump. The device is translatable along an axis between a first position and a second position. The device moves the launch clutch to the engaged condition when in the first position and does not move the launch clutch to the engaged condition when in the second position. A piston in communication with the pressurized hydraulic fluid provided by the pump is configured to translate the device along the axis between at least one of the first and second positions.

Abstract: A battery includes a battery body and at least one terminal protruding from an outside surface of the battery body. The terminal is electrically conductively connected to one of the battery poles. The battery further includes at least one electrically conductive bending lug, which is electrically conductive, connected via the terminal to the battery pole. The bending lug has a length that is greater than a distance of the longitudinal axis of the terminal from the point of penetration through the outside surface up to a lateral edge of the outside surface.

Abstract: A retainer of the linear guideway comprises a retaining member a supporting member. The retaining member has a base portion and two side wing portions integrally extended from the base portion. The base portion has a receiving groove, and each side wing portion has a positioning opening. One positioning opening is offset with respect to the receiving groove along a first direction, and another positioning opening is offset with respect to the receiving groove along a second direction opposite to the first direction. One side portion of the supporting member is wedged to the receiving groove of the base portion. Thus, the instant disclosure provides the retainer for positioning two staggered circulation tubes. Moreover, the instant disclosure also provides a linear guideway.

Abstract: A rotating shaft has: a first shaft member that includes a rail member and a first connecting portion which is disposed at the rail member; and a second shaft member that includes a slider which is movably installed to the rail member, a tubular unit which is secured to the slider, and a second connecting portion which is disposed at the tubular unit. The slider includes a plurality of roller type rolling elements. The plurality of roller type rolling elements includes: first roller type rolling elements which roll along a rolling path and when torque in a first direction is inputted, transfer running torque between the slider and the rail member; and second roller type rolling elements which roll along a rolling path and when torque in a second direction, which is opposite of the first direction, is inputted, transfer running torque between the slider and the rail member.

Abstract: A lubricating member is composed of a lubricant reservoir plate of a porous compact and a lubricant-containing member of fibrous material. The lubricating member is packed in an empty space in the end cap to make sure of maintenance-free operation for lubrication over a prolonged period of time. The lubricant reservoir plate is stowed in a recess formed on an outward end surface of the end cap major body and the lubricant-containing member is placed in the space lying deeper than the recess. A packing plate is placed between the lubricant reservoir plate and the lubricant-containing member with making close engagement with an edge defining the recess on the end cap to cover entirely a whole area of the lubricant reservoir plate to seal the lubricant impregnated in the lubricant reservoir plate inside the end cap.

Abstract: A motion device includes a track rail, a moving body, rolling elements, fixing members each fixed to an end surface of the moving body, and rolling element circulation members arranged between the moving body and the fixing members. The rolling element circulation members each have a connection section connected to the moving body so as to be rotatable about a Y direction, and a pair of first outside surfaces. The fixing members each have accommodation sections to accommodate the rolling element circulation members, and a pair of first inside surfaces closely contact with the pair of first outside surfaces. The respective rolling element circulation members and the accommodation sections are provided at both sides of the track rail interposed there between.

Abstract: A device having a rail and a block includes a rail and a block. The rail includes a body and a hollow inside, the hollow inside being located inside the body. The hollow inside of the rail is provided with a lightweight, shock absorption and sound absorption material, and the lightweight, shock absorption and sound absorption material is selected from a group consisting of foam metal material, polystyrene, asbestos, foam, plastic, and rubber. The block is adapted for sliding along the rail to finish a slide path.

Abstract: A linear-reciprocating device 10 has a moving block 13 which is attached to a guide rail 12 provided to a support base 11 so as to freely reciprocate, ball rolling grooves 23a and 23b which form ball rolling paths 24a and 24b together with ball rolling grooves 21a and 21b are provided to a base end of the moving block 13, and ball circulation holes 25a and 25b which are communicated to the ball rolling paths 24a and 24b are provided to a base end. In a longitudinal-directional middle area of the moving block 13, return blocks 32a and 32b which communicate between the ball rolling paths 24a and 24b and the ball circulation holes 25a and 25b are provided. The moving block 13 moves to a position at which the moving block 13 is moved to a position at which the moving block is protruded from a distal end of the guide rail 12.

Abstract: A trunk portion (13) of each end face of a slider body of a linear guide apparatus is covered with trunk parts (212A, 212B) of retainers (2A, 2B) in the whole width direction. End faces of both of the trunk parts (212A, 212B) are provided with a projection portion (212c) and a recess portion (212d), respectively. The end faces of both of the trunk parts (212A, 212B) are brought into contact with each other in a width direction of the projection portion (212c) and the recess portion (212d), that is a thickness direction of the trunk portion (13) of the slider body, and has a gap in a length direction (i.e., width direction of the slider). End faces of adjacent trunk parts (212A, 212B) oppose each other at a position not overlapping an oil supply opening (70). Oil grooves (23) conforming to oil grooves (76) formed on the end cap (7) are provided on end cap side faces of plate-shaped portions (21A, 21B) integrally formed with the retainers (2A, 2B).

Abstract: A motion guide device including a track shaft having a rolling surface; a moving member movable along the track shaft; a first seal member in sliding contact with a surface of the track shaft to close a gap between the track shaft and the moving member; and a second seal member provided along the rolling surface of the track shaft and closes the gap between the track shaft and the moving member. The second seal member includes: a fixing substrate locked to the moving member; and a seal portion fixed to the fixing substrate along the rolling surface of the track shaft and includes a seal lip portion in sliding contact with the surface of the track shaft and an extended seal portion in close contact with the first seal member while being compressed by the first seal member when the first seal member is fixed to the moving member.

Abstract: A buried plug has interference which is made to exert a load or stress less in a widthwise direction of the guide rail than in a lengthwise direction of the guide rail, thereby protect raceways on the guide rail against any deformation such as bulge. The buried plug has a mating zone to press fit into a counterbore of a bolt hole and a leading zone to guide the mating zone into the counterbore. Let assuming a definition that a direction perpendicular to a lengthwise direction of the guide rail is referred to a direction opposed to the raceway surface or the widthwise direction of the guide rail, the interference exerting a force on the counterbore in the widthwise direction is determined less than the interference exerting the force on the counterbore in the lengthwise direction of the guide rail.

Abstract: A linear motion module comprises a linear rail, a sliding block and balls. The sliding block is slidingly disposed on the linear rail and comprises a sliding block body, circulation elements and end caps. The inside of the sliding block body is configured with inner circulation grooves, the inner circulation groove and the rail groove constitute an inner circulation passage, and each of two sides of the sliding block body is configured with at least a circulation channel that corresponds to the inner circulation passage and penetrates through the sliding block body. Each of the circulation elements includes at least a circulation tube, and the opposite two circulation tubes are connected to each other to constitute an outer circulation passage. Each of the end caps is configured with at least two circulation guiding grooves, and the circulation guiding groove is connected to the inner and outer circulation passages.

Abstract: A linear actuator includes a guide mechanism and a retainer. On a guide block of the guide mechanism, a pair of ball-circulating grooves is formed on the lower surface that faces a cylinder body. Multiple balls are loaded in the ball-circulating grooves. Paired cover blocks are respectively mounted on the two ends of the guide block. The retainer has the form of paired ball clips, which are formed as arms to engage with the cover blocks when the clips are inserted in the ball-circulating grooves to hold the balls. Paired cover plates are respectively mounted on the end faces of the cover blocks, and arm-shaped cover clips are mounted so as to hold the cover plates. The cover plates, the cover blocks, and the guide block are thereby integrally linked.

Abstract: A slider assembly configured to move on a slide rail along an axial direction without limitation in distance is provided to solve the problems of the middle retaining members of a conventional circulation maintaining device, e.g., insufficient connection rigidity and inconvenience in manufacture and assembly. The positioning portion of a middle retaining member and the positioning portion of the protrusion of a slider are connected in a direction perpendicular to both the axial direction and a transverse direction in which the protrusion projects, thereby connecting the middle retaining member and the protrusion securely and evenly along their entire lengths. The middle retaining member and the protrusion also feature ease of manufacture and assembly.

Abstract: A linear guide apparatus is provided in which an excellent sealing performance is achieved. The linear guide apparatus includes a retainer for retaining plural cylindrical rollers rotatably in a rolling element rolling passage. The retainer includes an opening portion and accommodates for retention of the plural cylindrical rollers in the opening portion. The retainer also includes an endless seal unit surrounding the opening portion. The seal unit includes an inward facing lip inclining toward the inner side of the opening portion and extending toward the guide rail to be in sliding contact with the guide rail. The inward facing lip is formed continuously all around the seal unit. The seal unit includes an outward facing lip inclining toward the outer side of the opening portion and extending toward the guide rail to be in sliding contact with the guide rail, in addition to the inward facing lip.

Abstract: Lubrication for rolling elements is carried out within the turnaround passages. For resupply of lubricant, the end seals and end caps have lubricating holes lying in alignment with each other to allow any lubricant injection needle piercing through there. A porous compact impregnated with lubricant fits in a concavity in the end cap. The concavity has an opening to communicate the concavity with the turnaround passage. The porous compact is composed of reservoirs, conjunctive parts, and applicator noses extending through openings to expose their tips into the turnaround passages. The lubricating hole in the end cap has a slit through which the porous compact is exposed to the lubricating hole to allow the lubricant flowing into the porous compact.

Abstract: Provided is a motion guide device capable of preventing a lid member from being damaged due to collision of balls and operating a moving block on a track rail at high speed. The motion guide device includes: a track member having a ball rolling surface; a moving member main body having a load ball rolling surface that forms a load ball path between the load ball rolling surface and the ball rolling surface, and a ball return path provided in parallel to the load ball path); a lid member having a direction changing path that connects the load ball path and the ball return path to each other to form an endless circulation path; and balls arranged in the endless circulation path. The lid member includes an introducing portion of the direction changing path, which includes a first contact surface continuous with the direction changing path.

Abstract: The motion guide device includes: a raceway rail; a moving block including an endless circulation path for rolling elements; and spacers interposed in the endless circulation path of the moving block. The moving block includes: a block body including: a load rolling element path for the rolling elements; and a rolling element return path parallel to the load rolling element path; and turning path forming members fixed to the block body. The turning path forming member includes a direction turning path for coupling the load rolling element path and the rolling element return path to each other. The direction turning path includes: a turning portion for continuously varying a rolling direction of the rolling elements; and a preliminary turning portion which allows the spacers to move in a curved form while linearly guiding the rolling elements.

Abstract: A circulation maintaining device for a linear slide assembly includes two top boards, four half mediate plates, two third half tubes, two bottom boards, and two end caps. Each of the above mentioned parts is manufactured integrally by way of injection molding and needs only one set of molds. These parts are connected to the slider symmetrically. Each of the half mediate tubes provides a second half tube and a half mediate plate. The second half tubes are inserted into the top holes and the bottom holes from two ends of the slider. The two half maintaining plates each have stops and recessed areas in longitudinal direction thereof so as to form restriction in transverse direction. The half maintaining plats each have ribs which are engaged with the grooves in the slider to provide positioning effect in a vertical direction.

Abstract: A track system includes a track 1 and one or more carriages 10 having bearing wheels engaged with the track such that the carriages can travel along the track. Each carriage has a single bearing 12 engaged with the inner side of the track and a pair of bearing wheels 13, 14 engaged with an opposite side of the track. The width of the track between the two sides varies such as to maintain a tolerance better than 0.05 mm between the bearing wheels and the respective sides of the track. The load capacity of the carriage can be increased and centred by making the single bearing 12 larger than the other two bearing wheels 13 and 14. The track 1 may be machined in one piece, optionally with an integral base plate. In another embodiment the track has spaced inner and outer sections with a rack engaged by a drive pinion mounted on the carriage between the two sections.

Abstract: In a linear motion guide device suitably applicable to applications under high-temperature and vacuum environments where no plastic end cap is applicable, and having an end cap formed by injection molding using metal powders as a raw material, the degree of adhesion of the metal powders is improved at a thin and keen portion like the scooping portion of the end cap, thereby suppressing an abrasion and a deformation. The end cap (7) is formed by injection molding (MIM: Metal Injection Molding) using metal powders of equal to or less than 20 ?m as a raw material, and has a scooping portion (9) having undergone an HIP (Hot-Isostatic-Pressing) process and a thermal process.

Abstract: Provided is a motion guide device capable of preventing a lid member from being damaged due to collision of balls and operating a moving block on a track rail at high speed. The motion guide device includes: a track member having a ball rolling surface; a moving member main body having a load ball rolling surface that forms a load ball path between the load ball rolling surface and the ball rolling surface, and a ball return path provided in parallel to the load ball path); a lid member having a direction changing path that connects the load ball path and the ball return path to each other to form an endless circulation path; and balls arranged in the endless circulation path. The lid member includes an introducing portion of the direction changing path, which includes a first contact surface continuous with the direction changing path.

Abstract: A side seal attached to each of both ends of a slider of a linear guide in a sliding direction and sliding in contact with a guide rail includes: a seal main body formed by shaping an elastic material using a mold and sliding in contact with the guide rail; and a holder for housing and holding the seal main body. A gate burr housing for an elastic-material gate burr of the seal main body is formed in a seal main body holder housing. This eliminates the need of complete cutting or elimination of the elastic-material gate burr of the seal main body, and improves assembling performance. The gate burr housing is formed at a front or rear side of the seal main body housing of the holder, and the elastic-material gate burr of the seal main body is formed at a corresponding portion to the gate burr housing.

Abstract: A miniature linear motion guide unit is described in which a tubular member for a return passage is installed in an outward open recess cut in the carriage and a covering to bear the tubular member is integral with an end cap major part. This construction helps make the slider compact with cost saving in production. The slider is composed of a carriage made up of an upper portion and side bulges extending downward and having the outward open recesses, end caps having turnaround passages, the tubular members lying on outsides of the side bulges of the carriage, and coverings connected integrally with the end cap major parts to embrace the tubular members in combination with the outsides of the carriage.

Abstract: A buried plug has interference which is made to exert a load or stress less in a widthwise direction of the guide rail than in a lengthwise direction of the guide rail, thereby protect raceways on the guide rail against any deformation such as bulge. The buried plug has a mating zone to press fit into a counterbore of a bolt hole and a leading zone to guide the mating zone into the counterbore. Let assuming a definition that a direction perpendicular to a lengthwise direction of the guide rail is referred to a direction opposed to the raceway surface or the widthwise direction of the guide rail, the interference exerting a force on the counterbore in the widthwise direction is determined less than the interference exerting the force on the counterbore in the lengthwise direction of the guide rail.

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: 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 rail section comprises a body portion. The rail section has a profile that provides one or more roller contact areas extending a length of the rail section. The rail section further comprises an end portion that defines one or more slots that allow the one or more roller contact areas to deflect elastically relative to the body portion.

Abstract: The motion guide device includes: a track rail including insertion holes for fixing bolts; and a moving block assembled to the track rail through intermediation of a large number of rolling elements. The moving block includes an adhering matter path provided at a position opposed to the insertion holes of the track rail, the adhering matter path allowing matters adhering on the track rail to pass from one end to another end of the moving block. A pair of path forming members are fixed to both ends of the moving block in a moving direction thereof. The path forming members each include: a pair of end seal portions which traverse rolling-element rolling surfaces of the track rail and abut against a surface of the track rail; and a path opening portion which is provided between the end seal portions and forms an entrance of the adhering matter path.

Abstract: The sliding mechanism including rolling elements 3 as a main element is protected against entry of foreign substances. First, second auxiliary lips 14, 15 are formed in positions on inclined faces 9b formed on lips 9 of end seals S facing and making contact with end faces of sealing members 4, 5. Gaps 10, 11 otherwise formed between different levels of the end faces of the sealing members 4, 5 and the inclined faces 9b of the lips 9, are closed with the first, second auxiliary lips 14, 15. Since the gaps 10, 11 are thus closed, foreign substances do not enter the sliding mechanism M through the gaps 10, 11.

Abstract: A rolling device having high silencing effect and requiring no positional alignment working to the seal is provided. The rolling device includes an inner member, an outer member and a number of rolling members disposed between these inner and outer members to thereby allow the outer member to carry out relative rotational motion with respect to the inner member. In such rolling device, an end plate 24 is mounted to each end portion of the outer member. This end plate 24 is provided with an end plate body 24a, a packing member 24c disposed on an abutting surface to the outer member and a seal member 24b slidably contacting the inner member with substantially no clearance. The end plate body 24a, the packing member 24c and the seal member 24b are integrally formed.

Abstract: A linear motion transmission apparatus with a chain comprises at least one flexible link and a plurality of spacers, the spacers are equidistantly spaced apart and connected by the link, each two neighboring spacers define a holding space for holding rolling elements, each of the spacers has two separated arcuate retaining portions used to contact and hold the rolling elements. A lubricating-oil passage is formed between each of the spacers and the rolling elements to guide the lubricating oil from the non-load area of the outer surface of the rolling element to the load area, allowing the load area to be lubricated sufficiently.

Abstract: In a slider of a linear motion guide unit, a carriage in the slider is cut away at undersides thereof to form concaves in which tubular members defining return passages therein are placed. This is in favor of reduced machining cost. The slider is composed of the carriage having an upper portion and side bulges, end caps secured on ends of the carriage, and tubular members installed closely outside the bulges of the carriage in the sliding direction. Sidewise underparts of the carriage is cut away to provide the concaves into which the tubular members fit with tube ends being kept in spigots which communicate with turnaround passages in the end caps.

Abstract: A linear motion device has a first assembly and a second assembly, at least one first rolling surface that extends in a longitudinal direction and provided on the first assembly, the first rolling surface being located opposite a second rolling surface which is provided on the second assembly, a row of rolling elements that circulate endlessly in the first assembly is located between the first and second rolling surfaces, and at least one central longitudinal section of the first rolling surface is designed such that the rolling elements are at least partially relieved of the load. The first rolling surface is provided on a separate first rolling surface part in the form of a profiled element having a substantially constant cross-sectional shape, the first rolling surface part is situated in a central longitudinal section at a distance from a first body of the first assembly, and is supported on the first body on both sides in the longitudinal direction next to the central longitudinal section.

Abstract: Provided is a thin slide unit which allows, in a case where two ball plates each formed with a track-like ball groove are combined to thereby construct an endless circulation path for balls, by merely directly connecting the two ball plates without using a guide plate, balls to smoothly circulate, and a slider to smoothly reciprocate with respect to a guide rail. An endless circulation path for the balls of the slider is formed such that the two ball plates each formed with the track-like ball groove are caused to face each other, and that the ball plates are directly connected. Peripheral sides of the two ball plates oppose to each other, to thereby form a load opening portion for causing the balls in the endless circulation path to contact a rolling groove of the guide rail, and form a scooping-up portion for raising the balls from the rolling groove to guide the balls into the endless circulation path.

Abstract: Rigidity and precision of a motion guidance apparatus are increased by improving track rail shape. A track rail has at least two rolling member rolling grooves (RMRGs) on the upper surface and at least one RMRG on each side surface, the RMRGs extending in the longitudinal direction. When the RMRGs are taken along a cross-sectional plane perpendicular to the longitudinal direction of the track rail, and two imaginary lines extending vertically downward are drawn from ends of the respective grooves located on the outer sides among upper surface RMRGs, all the side surface RMRG are positioned in the rail but outside the corresponding one of the two imaginary lines, and at least portions of the upper surface and the side surfaces of the track rail, on which the RMRGs are formed, the portions being in the vicinity of the respective RMRGs, are formed with an inclination angle.

Abstract: A distortable rolling element retainer belt and a linear motion guide apparatus include a flat belt with holes defined therein and a separating portion is located between the adjacent holes. An upper spacer and a lower spacer are connected to each separating portion and a recess is defined between each separating portion and the upper spacer as well as between each separating portion and the lower spacer. The two recesses are located at different sides of the upper and the lower spacers so that the spacers on the rolling element retainer belt can be distorted to overcome the resistance from bending when the rolling elements traveling in a circulating passage which is not perpendicular to the surface of the rolling element retainer belt.

Abstract: A linear motion device has a first assembly and a second assembly which is linearly movable relative to the first assembly. A first rolling surface which extends in a longitudinal direction is provided on the first assembly and is situated opposite a second rolling surface provided on the second assembly. A row of rolling elements is located between the first and second rolling surfaces. The first assembly includes a single-pieced, first body and a return assembly and a return passage being provided in the first body A curved deflection passage is located entirely within the deflection assembly and connects the first rolling surface to the return passage such that the rolling elements circulate endlessly A projection that engages in the return passage is provided on the deflection assembly.