Abstract: A motion guide apparatus which can prevent the motion guide apparatus from rattling when being used in an environment Where an excessive moment works thereon. A crowning is formed at an end of a loaded rolling element rolling surface of a movable member, and a chamfer is formed at an end of the crowning. Let a total length of the crowning and the chamfer in a length direction of the loaded rolling element rolling surface be L. Let the diameter of a ball be Da. L/Da>4 is set. A maximum depth D of the chamfer is set to equal to or greater than the elastic deformation amount of a rolling element rolling surface of a track member, the loaded rolling element rolling surface of the movable member, and the rolling element under a radial load equal to or greater than 60% of the basic dynamic load rating.

Abstract: A sliding table includes a sliding seat having a seat body made from a first material and disposed between two main rigid rails parallel with each other. The seat body has two opposite rail recesses opening toward the main rigid rails, and two inner cyclic track holes disposed between the rail recesses. Two seat body rigid rails made from a second material harder than the first material are fixed in the rail recesses to confront the main rigid rails. Two roller belt modules are arranged in two cyclic track members overmolded to the seat body. When the seat body moves along the main rigid rails, each roller belt module circulates along one of the cyclic track members.

Abstract: A slat track roller assembly is provided so as to mount a slat track operatively associated with a wing leading edge slat for movements between retracted and deployed conditions relative to a leading edge of an aircraft wing. The slat track roller assembly may include at least forward and aft pairs of roller mechanisms connected to a respective one of opposed wing ribs of the wing leading edge in operatively rolling contact with a respective opposed lateral edge of the slat track. At least one of the roller mechanisms is positionally adjustable relative to the respectively opposed lateral edge of the slat track so as to compensate for mechanical tolerances that may be present.

Abstract: The invention relates to a carriage of a linear motion guide for arranging on a rail of the linear motion guide, said carriage having an at least substantially U-shaped cross-section and having at least one substantially U-shaped base body (15) which is supplemented with plastic components, wherein the carriage, in both legs of the U-shape, is in each case connected to at least one self-contained rolling body housing (7) which is kept open towards the rail in order to guide as precisely as possible on the rail and nevertheless being easy to assemble. According to the invention, at least parts of inner and outer boundary surfaces of a return channel (10) and both deflection channels (11) of one of the rolling body housings in the respective leg are formed by means of a one-piece plastic component in both legs of the carriage.

Abstract: A system includes a carriage configured to move along a rail. The system also includes a clamping brake configured to selectively allow and prevent movement of the carriage along the rail. The clamping brake includes multiple brake pads configured to be moved inward to lock onto the rail and to be moved outward to release the rail. The clamping brake also includes multiple springs configured to apply spring forces that cause the brake pads to move inward and lock onto the rail. The clamping brake further includes a camshaft coupled to or including multiple eccentrics. The eccentrics are configured to overcome the spring forces and cause the brake pads to move outward and release the rail.

Abstract: A motion guide device includes: a track member including a rolling member rolling surface; a movable member including a loaded rolling member rolling surface, and a rolling member return passage; a pair of cap members including a direction change passage connecting the loaded rolling member rolling surface and the rolling member return passage; and a plurality of rolling members arrayed in a rollable manner on a loaded rolling member rolling passage, the rolling member return passage, and a pair of the direction change passages, the loaded rolling member rolling passage being made up of the rolling member rolling surface and the loaded rolling member rolling surface. A gap between the rolling member and the direction change passage at a boundary portion X is formed so as to become smaller than a gap between the rolling member and the rolling member rolling surface at the boundary portion.

Abstract: The motion guide device clamper mechanism includes a clamper main body connected to the movable member, an inner face having a tapered shape so that the distance between the facing faces is narrower toward the end of one face of the track member, and one rolling member disposed between the facing faces of the one face of the track member and the inner face. The rolling member receives a pressing force toward a position where the distance between the facing faces of one face of the track member and the inner face of the clamper main body is narrow, so that a frictional force based on the taper shape acts on the rolling member, and the restraint of the clamper main body with respect to the track member is performed. Further, a frictional force based upon the taper shape is released and the non-restraint of the clamper is performed.

Abstract: A collision simulation test apparatus including a table to which a test piece is to be attached, the table being movable in a predetermined direction, a toothed belt for transmitting power to drive the table, a drive module capable of driving the toothed belt, and a control part capable of controlling the drive module. The control part is capable of controlling the drive module to generate an impact to be applied to the test piece, and the impact generated by the drive module is transmitted to the table by the toothed belt.

Abstract: The machine tool (10) has an asymmetrically constructed workpiece positioning device (16) which runs on three guide rails (17, 18, 19). It comprises two carriages (20, 45) which are connected together by a workpiece carrier (31) that is mounted so as to be rotatable about the A axis. While the first carriage (20) serves for the longitudinal and rotary positioning of the workpiece carrier (31), the second carriage (45) is provided merely for supplementary weight support. This results in a mechanically slimline, low-weight structure with high positioning accuracy. High dynamic loadability and thus a high machining rate and particularly high vibration resistance is allowed.

Abstract: A drive apparatus includes a rail, a shaft, and a motion body. At least a part of the rail is curved such that an opening groove of the rail is curved when the rail is seen from a side orthogonal to an axial direction. The shaft includes flexibility. The shaft includes an engagement portion which is formed in a spiral shape at a circumferential surface thereof. The motion body includes a case portion and an engaged portion held by the case portion so as to be movable, the engaged portion extending inside the rail through the opening groove from an outward of the rail, the engaged portion engaged with the engagement portion of the shaft. The engaged portion is movable in a first direction, and includes an orientation fixed relative to the case portion in a second direction which is orthogonal to the first direction.

Abstract: A circulator structure includes a main body, a Y-like groove and two return channels. The main body has a first side surface, a second side surface and a through hole. The Y-like groove includes a first oil-guiding groove, a second oil-guiding groove and an oil distribution groove. The first oil-guiding groove and the second oil-guiding groove are located at two opposite sides of the through hole, and the oil distribution groove is located below the through hole. A lower guiding end of the first oil-guiding groove and a lower guiding end of the second oil-guiding groove are respectively connected to the oil distribution groove. The oil distribution groove has an upper end distribution opening connected to the through hole and a lower end distribution opening. The return channels are respectively located on two opposite sides of the first side surface and are connected to the lower end distribution opening.

Abstract: A lubricating tube includes an inner surrounding surface that has a non-circular cross-section, angularly spaced-apart inner lubricant-storing recesses, and guide surface portions each of which is interconnected between two adjacent ones of the inner lubricant-storing recesses. The inner lubricant-storing recesses and the guide surface portions constitute the inner surrounding surface and cooperatively define a roller passage hole. The inner lubricant-storing recesses are indented from the guide surface portions toward the outer surrounding surface. A slide rail device having the lubricating tube is also disclosed.

Abstract: A vertically adjustable pedestal for a boat accessory includes a hollow outer column and an inner column positioned within the outer column. The inner and outer columns are longitudinally slidable with respect to one another. A plate is captured between the inner and outer columns. The plate is laterally adjustable to create a frictional force between the inner and outer columns that prevents lateral movement therebetween. One of the inner and outer columns is configured to be connected to a supporting surface of a boat. The other of the inner and outer columns is configured to be connected to the boat accessory.

Abstract: Provided is a coating apparatus including: a stage unit which floats the substrate to a predetermined height by using wind pressure of gas; a droplet discharge unit which drops the droplet of the functional liquid on the substrate floated to the predetermined height from the stage unit; a main scanning direction moving unit which moves the substrate, which is floated to the predetermined height from the stage unit, in the main scanning direction while holding the substrate; and a sub-scanning direction moving unit which moves the droplet discharge unit in the sub-scanning direction with respect to the substrate floated to the predetermined height from the stage unit. The sub-scanning direction moving unit moves the droplet discharge unit in the sub-scanning direction while the main scanning direction moving unit repeatedly moves the substrate in the main scanning direction and the droplet discharge unit repeatedly drops the droplet.

Abstract: A slide apparatus includes a track body, at least one primary module, and a slider provided therein with a secondary module. The track body defines a recessed space therein, and the primary module is installed in the recessed space. The slider is slidably mounted on the track body and has a housing located in the recessed pace of the track body. The housing is provided with at least one channel in which the secondary module is located. The channel of the housing, which opens out at a bottom opening facing to a bottom of the track body, serves as a jig to facilitate the secondary module formed integrally with the housing of the slider. The secondary module works with the primary module to constitute a linear motor, which enables the slider to move linearly along the track body.

Abstract: The motion guide device includes a lubricant supply passage provided in at least one of a pair of cover members provided to a movable member and configured to supply lubricant to an endless circulation passage, in which the lubricant supply passage includes at least a first lubricant supply passage ? formed to extend in a direction orthogonal to a longitudinal direction of the track member from at least one of a left side surface and a right side surface of the cover member, and a second lubricant supply passage ? connected to the first lubricant supply passage ?, and a passage shape in a place connected to the first lubricant supply passage ? of the second lubricant supply passage ? is configured as a diameter-expanded hollow section having a diameter more expanded than a passage shape of another place. Thus, a new form of a cover member is provided.

Abstract: A motion guide device is formed of: a track member including a base portion extending along a longitudinal direction, and a pair of wall portions erected from both edges of the base portion in a width direction, and having rolling element rolling grooves formed along a longitudinal direction; and a moving member which is assembled in a movable manner along the longitudinal direction between the wall portions, and to which a pair of guide members are assembled, load rolling element rolling grooves which correspond to the rolling element rolling grooves being formed in the guide members, wherein at least either one of the guide members is equipped with a biasing member on a surface of the guide member on a side opposite to a surface of the guide member on which the load rolling element rolling groove is formed.

Abstract: A multi-row rolling element housing band is provided which can promote an increase in the degree of precision of a guide. At least three rolling element rows (17) to (19) are arranged in a band (15). Each second rolling element (18a) of the second rolling element row (18) is displaced by P/n in a length direction of the band (15) from each first rolling element (17a) of the first rolling element row (17). Each third rolling element (19a) of the third rolling element row (19) is displaced by P/n in the length direction of the band (15) from each second rolling element (18a) of the second rolling element row (18). P is the pitch between the first rolling elements (17a), and n is the number of rows.

Abstract: Provided is a bearing retainer (1) which has excellent oil resistance and impact resistance. The bearing retainer (1) retains a plurality of balls in such a manner that the balls are apart from each other. In a ball screw that is provided with a first member and a second member which moves relatively to the first member, the plurality of balls is arranged on one of the first member or the second member so as to be in contact with both of the first member and the second member, and rolling of the balls enables the relative movement. This bearing retainer (1) is formed from a resin composition that contains an elastomer component and a fluororesin which is mainly composed of vinylidene fluoride.

Abstract: The present invention relates to a charged particle beam device capable of suppressing table deformation caused by movement of a rolling element of a guide with a simple configuration, and a strain isolation guide structure, a stage using the guide structure, and a charged particle beam device using the stage are proposed, the strain isolation guide structure being characterized in that, in a sample stage including a linear guide including a carriage (201), a rolling element, and a guide rail (202), and a table (105), the carriage (201) and the table (105) are connected via an adapter (401) as an elastically deformable member.

Abstract: This mobile-object-holding tool is mounted in place of a track body on a mobile object which moves along the track body, wherein the mobile object includes at least a pair of rolling element load rolling grooves through which a plurality of rolling elements roll and the mobile-object-holding tool includes a pair of holding parts which face the pair of rolling element load rolling grooves and hold the plurality of rolling elements, a biasing linking part which links the pair of holding parts together and biases the pair of holding parts away from each other, and a deformation regulating part which regulates a mounted contraction amount by which the biasing linking part is capable of contracting after being mounted on the mobile object to a predetermined value or less.

Abstract: The invention relates to a surgical guide for receiving and guiding a surgical instrument, the guide including; an elongate body extending from a proximal end to a distal end, the elongate body including at least one aperture for receiving and guiding the surgical instrument; at least one positioning mechanism, the positioning mechanism adapted to be directly or indirectly connected to the body and adapted to engage or abut an anatomical location of a patient on which the guide is to be used. The guide is particularly useful in aiding canine tibial tuberosity advancement procedures.

Abstract: This mobile-object-holding tool is mounted in place of a track body on a mobile object which moves along the track body, wherein the mobile object includes at least a pair of rolling element load rolling grooves through which a plurality of rolling elements roll and the mobile-object-holding tool includes a pair of holding parts which face the pair of rolling element load rolling grooves and hold the plurality of rolling elements, a biasing linking part which links the pair of holding parts together and biases the pair of holding parts away from each other, and a deformation regulating part which regulates a mounted contraction amount by which the biasing linking part is capable of contracting after being mounted on the mobile object to a predetermined value or less.

Abstract: A linear guideway includes a rail, a slider disposed on the rail, and a load passage formed between the rail and the slider. The slider has two non-load passages penetrating through two opposite end surfaces of the slider. Each of two ends of each non-load passage is provided with a force sensor. Two end caps are disposed on two opposite end surfaces of the slider respectively and each have two circulation grooves. Each circulation groove is connected to an end of the load passage and an end of the non-load passage to form a circulation channel for balls to move therein. As a result, the linear guideway of the present invention employs force sensors to sense the force-receiving state of two ends of the non-load passages when they are impacted by the balls, so that it can be determined that if the balls have an abnormal pressing state.

Abstract: A guide carriage includes a main body, a separate track element connected to the main body, at least one carriage track, at least one deformation sensor, an evaluating device, and at least one row of endlessly revolving roller elements that roll off on an associated carriage track in a load-transmitting manner. The carriage track extends parallel to a longitudinal axis, and is positioned on the track element. The track element has at least one self-supporting section not supported on the main body and located at one end of the track element along the direction of the longitudinal axis. The at least one deformation sensor is connected to the evaluating device, positioned in a region of a respective self-supporting section of the track element, and configured to measure a deformation of the respective one of the at least one self-supporting sections of the track element.

Abstract: An actuator includes a track member provided with a base extending along a longitudinal direction and a pair of walls erected from opposite ends of the base in a width direction, with rolling-element rolling grooves formed along the longitudinal direction; and a moving member assembled movably along the longitudinal direction between the walls, with respective load rolling-element rolling grooves corresponding to the rolling-element rolling grooves being formed in the moving members; and a screw shaft passed through a through-hole formed in the moving member, with a screw rolling-element rolling groove formed in the screw shaft, the screw rolling-element rolling groove being spiral in shape, wherein the moving member has the nut member attached to the through-hole, with the screw load rolling-element rolling groove corresponding to the screw rolling-element rolling groove formed in the nut, the nut member is assembled via a flange member which includes a lubricant supply device.

Abstract: A foreign matter detecting device comprises a first yoke portion and a second yoke portion which adjoin a permanent magnet respectively. The both yoke portions are arranged while interposing a reference space therebetween. Further, a detour yoke portion is arranged. A magnetic resistance of the first detour space being smaller than a magnetic resistance of the predetermined reference space, and magnetic resistances of the second detour space and the first detour space being larger than the magnetic resistance of the predetermined reference space. A detection signal in relation to the foreign matter is outputted on the basis of a magnetic flux density provided in at least any one of spaces of the reference space and the first detour space, corresponding to an amount of retention of the foreign matter in a retaining portion which is provided so that the foreign matter is retained in the second detour space.

Abstract: In a linear motion guide unit, in order to prevent direct collision of a roller, or a rolling element, with an end portion of a carriage, an extending portion of a spacer of an end cap is disposed at the end portion of the carriage for absorbing impact resulting from collision of the roller. The spacer has the extending portion which protrudes from the spacer at a position adjacent to an inner circumferential surface of a turnaround passage and which has a wall surface continuous from the inner circumferential surface of the turnaround passage. The wall surface of the extending portion serves as a collision receiving surface for receiving a colliding roller. The carriage has a housing recess which is formed at an end of a raceway groove thereof and to which the extending portion is fitted.

Abstract: A method for estimating a variation in a preload applied to a linear guideway of a machine tool includes steps of: a) obtaining, via each of vibration sensors, first and second vibration signals that are generated according to detection of vibration of a table disposed on the linear guideway respectively at first and second time instants; b) determining, via the computation module, first and second natural frequencies based on a theoretical mode shape and respectively on the first and second vibration signals; and c) determining, via the computation module, the variation in the preload based on the first and second natural frequencies.

Abstract: A linear motion guiding device that is unlikely to cause a damage to a tongue unit of an end cap even when the linear motion guiding device is used under high-speed conditions is provided. An end cap (22) includes, at an end of a side of a raceway of an arc groove (222) that forms an outer peripheral surface of a direction changing passage (42), a tongue unit (25) that scoops up a ball (3) from a raceway (41) and guide the ball to a direction changing passage (42). A distal end surface (251) of the tongue unit includes a plane (251a) perpendicular to a direction along the raceway (41) and a circular-arc surface (251b) that caves into an arc shape from the plane. A curvature radius of a circular-arc surface is smaller than a radius of the ball.

Abstract: A linear slide rail includes a rail having four primary grooves respectively defined in two opposite sides of the rail. A first slide includes a first passage, and each of two opposite insides of the first passage has two first grooves. Multiple first balls contact the primary grooves and the first grooves. Each of the first grooves has a first contact angle. When a first wearing trace is formed along the rail by the first balls and the first slide, the first slide and the first balls are replaced with a second slide and multiple second balls. Each of the second grooves of the second slide has a second contact angle which is different from the first contact angle. A second wearing trace is formed along the rail by the second balls and the second slide. The first and second wearing traces are not overlapped with each other.

Abstract: A vibration motor includes a fixed member, a vibration unit, and an elastic member. The fixed member includes a housing having a receiving space and a coil received in the receiving space and assembled with the housing. The vibration unit includes a first weight, a second weight, and a magnet sandwiched by the first and second weights. The motor further includes a positioning guiding member including a weight guiding rail formed on the weight, a base guiding rail formed on the bottom wall of the base, a movement rail formed cooperatively formed by the weight guiding rail and the base guiding rail, and a plurality of rolling members received in the movement rail for restricting the vibration unit to move along the movement rail. The weight guiding rail is formed on the weight by milling, and the base guiding rail is formed on the base by stamping.

Abstract: A motion guide apparatus ensures that a retaining portion retains a rolling element. A rolling element retainer having retaining portions that prevent a rolling element from falling out of a movable body, the retaining portions extending along a loaded rolling element rolling portion, is incorporated in the movable body of the motion guide apparatus. End plates are formed integrally with the retaining portions. Fall prevention portions to reduce the widths of openings between the retaining portions are provided to center parts of the retaining portions in a length direction thereof. The fall prevention portions are padding portions integrated with the retaining portions, the padding portions rising in such a manner as to reduce the widths of the openings, and/or projections integrated with the retaining portions, the projections touching the movable body in such a manner that the center parts of the retaining portions bend toward a track member.

Abstract: A motion guide apparatus ensures that a retaining portion retains a rolling element. A rolling element retainer having retaining portions that prevent a rolling element from falling out of a movable body, the retaining portions extending along a loaded rolling element rolling portion, is incorporated in the movable body of the motion guide apparatus. End plates are formed integrally with the retaining portions. Fall prevention portions to reduce the widths of openings between the retaining portions are provided to center parts of the retaining portions in a length direction thereof. The fall prevention portions are padding portions integrated with the retaining portions, the padding portions rising in such a manner as to reduce the widths of the openings, and/or projections integrated with the retaining portions, the projections touching the movable body in such a manner that the center parts of the retaining portions bend toward a track member.

Abstract: A magnet-type rodless cylinder (1) is provided with a guide mechanism having an outer rolling groove (26), an inner rolling groove (29), a cylinder body (32), a pair of connection paths (34) for connecting an area between the outer rolling groove and the inner rolling groove with the cylinder body, and a plurality of steel balls (36) that can roll within an endless circuit (35) formed of the cylinder body, the connection paths and the area between the outer rolling groove and the inner rolling groove, wherein the connection paths (34) are formed at a pair of inner members, i.e. return caps (33), disposed on the inner sides of metal end plates (12) that are attached to the front and rear ends in the sliding direction of a sliding body (4).

Abstract: A disclosed screw device provides an allowance for the accuracy of a recess in an end surface of a nut. A nut has a communicating hole communicating in an axial direction, and is provided at an axial end surface of the nut with a recess communicating with the communicating hole. A circulation member including a turn-around path is placed in the recess. When the circulation member is placed in the recess, the turn-around path of the circulation member is linked to a loaded rolling element rolling groove and the communicating hole of the nut to form a circulation path of a rolling element. A clearance between the circulation member and a wall surface of the recess permits the circulation member to move. The circulation member placed in the recess is not fixed in the recess, and is covered with a lid member to be attached to the nut.

Abstract: A linear drive, which has an output slide, which is guided on a drive housing in a linearly movable manner. The output slide contains a one-piece slide body, which is designed as a bent sheet-metal part. The slide body includes a plate-shaped central segment, guide limbs, which are arranged alongside the plate-shaped central segment and bent downward, and a drive limb, which is arranged at an end face and which likewise is bent downward. The guide limbs are used to linearly guide the output slide, and the drive limb is used for the application of the driving forces that cause the reciprocating motion of the output slide.

Abstract: A rotation-linear motion conversion apparatus (10) includes: a rack bar (30) in which a rack gear (32) is formed; a housing (40) that surrounds the rack bar (30); a pinion shaft (20) including a pinion gear (22) that engages with the rack gear (32) and that is inserted inside the housing (40); and a support part (50) that is provided on an opposed surface (41s1), which is opposed to the rack gear (32), of the housing (40) and that supports the rack bar (30) movably in a longitudinal direction of the rack bar (30).

Abstract: There is provided a linear motion guide device that is reduced in a contact surface pressure between a ball and a raceway groove so that an occurrence of an edge load can hardly occur, even when any of a pressing load, a tensile load, and a lateral load is applied to a slider. Upper flanks and lower flanks included in raceway grooves of a guide rail and a slider each include: a main arc portion having an arc-shaped section and placed generally in a center of the flank in a width direction; a groove shoulder side sub-arc portion having an arc-shaped section and formed continuously from a groove shoulder side of the main arc portion; and a groove bottom side sub-arc portion having an arc sectional shape and formed continuously from a groove bottom side of the main arc portion. Further, a curvature radius of the groove shoulder side sub-arc portion is different from a curvature radius of the groove bottom side sub-arc portion.

Abstract: An electromotive furniture drive with a guide path and an output unit which moves along the guide path and which at least partly surrounds the guide path. The guide path has a gear rack, and the output unit has a drive motor with a speed-reducing mechanism and an output gear which is in engagement with the gear rack of the guide path.

Abstract: A linear motion guide unit includes a guide rail and a slider. A carriage of the slider has a central portion located above the guide rail, and wing portions which extend downward from widthwise opposite ends of the central portion. Shoulder portions of the carriage located in inner boundary regions between the central portion and the wing portions of the carriage have first inclined surface so that the shoulder portions have padding portions. Corner portions of the guide rail located between an upper surface and longitudinal sides of the guide rail have second inclined surfaces which face the first inclined surfaces of the carriage and extend in the longitudinal direction parallel to the first inclined surfaces. The first inclined surfaces have an inclination angle substantially the same as an inclination angle of the nose surfaces of threaded holes formed in the carriage for attachment of a counterpart member.

Abstract: Provided is a motion guide device including a track rail in which a rolling body rolling groove is formed and a movable block which is mounted on the track rail via a plurality of rolling bodies. The movable block includes a movable block body which has a loaded rolling body rolling groove forming a loaded rolling body rolling passage in cooperation with the rolling body rolling groove and has a non-loaded rolling body rolling passage, return members in which inner peripheral-side direction change grooves connecting the loaded rolling body rolling passage and the non-loaded rolling body rolling passage are formed, and end plates. The end plate has a rolling body scooping arm protruding in a direction of a connection surface with the movable block body and a rolling body scooping groove continuous with the outer peripheral-side direction change groove is formed in the rolling body scooping arm.

Abstract: The invention relates to a linear guide (1) having at least one inner and at least one outer profile-member (2, 3), the outer profile-member (3) at least partially surrounding the inner profile-member (2) and the profile-members (2, 3) being guided one inside the other by means of at least two linear guiding means which are preferably arranged diametrically opposite each other, wherein at least a portion of a first linear guiding means is arranged in a floating manner.

Abstract: A movement device includes: a track body; and a moving body which includes: a plurality of endless circulation passages; and a roller configured to roll in the plurality of endless circulation passages, the moving body being movable relative to the track body via the roller disposed between the track body and the moving body. The moving body further includes: a moving body main body in which inner peripheral portions of roller direction-change passages configuring the adjacent endless circulation passages are formed to be adjacent to each other on an end surface in a movement direction in which the moving body moves; and a cover body which is attached to the end surface of the moving body main body and in which outer peripheral portions of roller direction-change passages configuring the adjacent endless circulation passages are formed to be adjacent to each other.

Abstract: A shaft circulation ball screw includes: a screw, a nut, a circulation member, and two fixing rings. The screw is provided with a stop portion for the two ends of the circulation member to rest against, a distance from the stop portion to a central axis of the screw is defined as a first height H, a distance from a highest point of the rolling elements which are located in the return passage to the central axis of the screw is defined as a second height Hmax, and Hmax satisfies the following relation: Hmax?0.5×BD?H?Hmax.

Abstract: A slider is composed of four components except for rolling elements. A slider moving relatively to a guide rail is composed of a carriage having raceway grooves, a circulator to make a return passage and insert nuts to fit into through-holes in the circulator. Engaging parts of the carriage makes fit-engagement with holes in the circulator to make snap-fit between the carriage and the circulator to fasten them each other.

Abstract: A circulating module of a linear guideway includes a slider and a circulator. The slider has two carrying surfaces arranged on two opposite outer surface thereof. Each carrying surface includes a first circular-arc segment and two second circular segments respectively arranged at two opposite sides of the first circular-arc segment, and a radius of each first circular-arc segment is smaller than that of each second circular-arc segment. The circulator includes two inner circular-arc surfaces. The slider is inserted into the circulator, the carrying surfaces stretch a distance between the inner circular-arc surfaces, each inner circular-arc surface is abutted against the two second circular-arc segments of the corresponding carrying surface, and a gap is formed between each inner circular-arc surface and the corresponding first circular-arc segments.

Abstract: An end module of a linear guideway includes an end cap, a cover, and a lubricating sheet. The end cap has an accommodating trough, and the cover is installed on the end cap to cover the accommodating trough, so a surface of the end cap faces a surface of the cover. At least one supporting pillar is formed on one of the two facing surfaces of the end cap and the cover, and the supporting pillar abuts against the other one of the two facing surfaces of the end cap and the cover. The lubricating sheet is received in the accommodating trough. The lubricating sheet has at least one penetrating hole, and the supporting pillar is inserted into the penetrating hole. Thus, the lubricating sheet of the instant disclosure is provided without any deformation, which is caused by the end cap and the cover.

Abstract: Provided is a motion guide device in which a moving member is equipped with circulation path moldings. With the device, ease of assembly and moldability can be improved. A moving member is provided with circulation path moldings, which have: holding sections that extend along loaded rolling-element rolling sections; return path configuring sections that configure return paths; and a pair of direction-change path inner circumference configuring sections that configure the inner circumferences of a pair of direction-change paths. The circulation path moldings are provided with a first molding in which one direction-change path inner circumference configuring sections is integrally molded with the holding section and a second molding in which the other direction-change path inner circumference configuring section is integrally molded with the return path configuring section. The first molding and the second molding are separate bodies.

Abstract: A porous compact impregnated with lubricant fits into a lengthwise hole in the carriage to apply the lubricant around balls rolling through a return passage to realize maintenance-free lubrication. The carriage has a flat upper portion which has threaded holes lying midway between the widthwise opposed bulges to fasten counterparts to the carriage. The carriage has widthwise opposed corners where the flat upper portion merges the respective bulges. The corners each have therein a lengthwise hole in which the cylindrical porous compact impregnated with lubricant is inserted to extend across the overall length of corners. The bulges of the carriage have threaded holes which are used to fasten the end caps to the fore and aft ends of the carriage.