Abstract: A linear motion guide unit is envisaged smooth transfer of a roller from a turnaround passage to a return passage and vice versa across a joint between the turnaround passage and the associated return passage. Protrusions extending stepwise from an end of the turnaround passage come into complementary fit joints with an associated end of a tubular member defining the return passage to make wall surfaces to guide axially opposite ends of the roller, in which the joints are staggered or different in their locations between wall surfaces. The return passage is defined with a fore-and-aft hole of rectangular shape in transverse section inside a tubular member that fits into a bore made in the carriage. The tubular member is joined at lengthwise opposite ends thereof together to the protrusions that are raised above end surfaces of the end caps to extend the turnaround passage into the bore.

Abstract: A slide rail device includes a guide rail, a slider slidable along the guide rail, and a pair of cylindrical roller train sets disposed at two opposite sides of the guide rail. Each cylindrical roller train set is disposed between the guide rail and the slider, and has a plurality of cylindrical rollers. Each cylindrical roller has a first roller surface portion and a second roller surface portion that is recessed relative to the first roller surface portion. The first roller surface portions of the cylindrical rollers are in rolling contact with the guide rail and the slider, and the second roller surface portions of the cylindrical rollers are free of contact with the guide rail and the slider.

Abstract: The present invention provides a motion guide device having inner and outer direction changing passages that mutually cross three-dimensionally, in which a retainer is able to smoothly circulate even when an outer peripheral side of the inner direction changing passage as well as an outer peripheral side of the outer direction changing passage are formed on an end plate. An outer peripheral side (18) of the outer direction changing passage and an outer peripheral side (19) of the inner direction changing passage are so formed on an end plate (5) as to cross each other three-dimensionally. Built in the end plate (5) is an inner/outer direction changing passage component (24) formed to serve as not only an inner peripheral side (25) of the outer direction changing passage but also an outer peripheral side (26) of the inner direction changing passage together with the outer peripheral side (19) of the inner direction changing passage formed on the end plate (5).

Abstract: A preload biased structure of a linear rail includes a rail and a sliding block disposed on the rail. The sliding block includes a sliding base, a supporting element, two connecting pieces and two locking pieces. The sliding element is provided with a connecting space. The front and rear end of the sliding base each is provided with abutting pieces. The abutting piece extends to form a biased block toward the connecting space. The biased block extends to form a biased slope. In assembling, the biased slope guides the supporting element to be inserted in the connecting space. The biased block provides a preloading force, whereby the supporting element can be fixed in the sliding base in advance. The locking pieces lock the two connecting pieces on both ends of the sliding base, so that the supporting element and the two connecting pieces can be assembled on the sliding base.

Abstract: A rolling element retainer chain provides a row of rolling elements smooth running in a recirculation passage and keeps a predetermined spacing distance between two adjacent rolling elements and the rolling elements be separated without contact to each other; the rolling element retainer chain comprises at least one thin flexible metal strip having a row of longitudinal arranged holes; a row of cross arranged latten between holes are formed thereof; and a number of spacers, incorporated on the cross arranged latten; the strength of the flexible metal strip is much higher than that of the resin materials conventionally used and can endure higher tension without broken, and thus a longer operating duration can therefore be achieved; both ends on the flexible metal strip can be overlapped wholly fixed without interference because of thinner thickness thereof, and a close loop rolling element retainer chain is formed thereof.

Abstract: A guide carriage for a linear roller bearing is supportable in a longitudinally displaceable manner via at least one row of rollers on a guide rail which extends in a longitudinal direction, a separate rolling surface part which includes a rolling surface for the rollers is assigned to each row of rollers, and the rolling surface part is connected via an adhesive layer to a carrier body. The adhesive layer is designed essentially planar on the back side of the rolling surface part which faces away from the rolling surface, the rolling surface part being accommodated in a recess—which has an L-shaped cross section—of the carrier body.

Abstract: An intermediate member is rockably provided around an outer periphery of a corresponding one of tripod shaft portions. Shaft-like rolling elements are retained by corresponding retainers so that the shaft-like rolling elements are able to circulate around the corresponding intermediate members and are able to roll between side surfaces of a corresponding one of raceway grooves of an outer ring and a torque transmitting surface of a corresponding one of the intermediate members. Then, raceway recesses are formed on the side surfaces of each raceway groove so as to extend in a direction of a rotation axis of the outer ring. The shaft-like rolling elements are fitted in the corresponding raceway recesses and are able to roll along bottom surfaces of the respective raceway recesses. Thus, the retainers are arranged outside the raceway recesses.

Abstract: A linear motion guide unit has a binding strip adapted to fasten a retainer plate to a carriage miniature in dimension, but long in lengthwise direction. The linear motion guide unit has a retainer plate lying lengthwise of the carriage in opposition to load-carrying race to keep more than one roller running through the load-carrying race, and a binding strip to fasten the retainer plate to the carriage. The binding strip is composed of a major part having any number of bents which are positioned at regular intervals in the longitudinal direction of binding strip, and lengthwise opposite angled parts prepared to come into engagement with the end caps, so that the binding strip urges elastically at the bents thereof the retainer to come into close engagement with carriage.

Abstract: A guide carriage for a linear roller bearing includes a main body, which may bear in a longitudinally movably manner and via at least a first and at least a second endlessly circulating roller row against a guide rail that extends in a longitudinal direction, a deflection assembly provided on an end face of the main body and including at least one curved inner deflection channel for the first roller row, and at least a second curved outer deflection channel for the second roller row, the inner deflection channel being located within the outer deflection channel, the deflection assembly includes an end cap, on the inner side of which—that faces the main body—an outer boundary surface of the outer deflection channel is provided, and at least one separate, one-pieced deflection piece inserted in the end cap, on which an inner boundary surface is provided that covers the entire outer deflection channel. An outer boundary surface is provided that covers the entire inner deflection channel on the deflection piece.

Abstract: A linear motion guide unit with high stiffness, high accuracy and long-lasting service life is provided in which a rolling element is a roller and a carriage of a slider is made long to allow a crowning profile to be long. The carriage has an overall length equivalent to substantially four times a width of a guide rail. The carriage is made thereon with a raceway surface that is modified near lengthwise opposite ends thereof crowning profiles each of which has a crowning length equivalent to four times as long as a diameter of the roller and also has a crowing depth equivalent to an amount of elastic deformation that occurs in the raceway surfaces and the roller when the slider undergoes a load reaching a half of a static nominal standard load.

Abstract: More specifically during manufacture of hydraulic cylinders for the crane industry, tubular bodies must be rolled on their inner and/or outer surfaces, in order to be able to ensure a sufficient durability of the hydraulic cylinders. Tools with a rolling body guide are used for this. The disadvantage of the prior art is that the replacement of a rolling body guide leads to immobilization times. The present invention therefore proposes an improvement to the prior art with a rolling body guide for receiving and feeding rolling bodies which are used for finish rolling or roller compression of an inner or outer surface of a tubular body and where the rolling body guide has at least two defined detachable receiving sections, so that a modular assembly of the rolling body guide is realizable.

Abstract: A circumferential guide for rolling bodies for use in a linear guide unit which has a carriage-type part and a rail-type part, that has at least one loaded roller body row and one unloaded roller body row during the intended operation. The circumferential guide is configured as a pre-mountable unit. A linear guide unit is also disclosed that contains at least one circumferential guide. The circumferential guide has at least one component for the rolling bodies, which at least partially guides both the loaded rolling body rows and the unloaded rolling body rows (Ru) during the intended operation. This configuration achieves that the parts requirement for the circumferential guide can be held low, resulting both in a reduction of production costs and in a compact and stable shape of the same.

Abstract: A linear roller bearing element with an endless rolling element channel is composed of a carrier raceway for the load-bearing rolling elements on a carrier body, a return channel for rolling elements that are returning, and turnaround channels that connect the carrier raceway and the return channel at both ends with each other in an endless manner, the turnaround channels being bounded by end covers. The roller bearing element has two rolling element channels with two longitudinally extending carrier raceways located next to each other within a common plane and with clearance between them, on the carrier body for load-bearing rolling elements, and two assigned return channels for rolling elements that are returning, and respective turnaround channels. With a linear roller bearing guide, these roller bearing elements are located between a guide rail and a guide carriage—which is supported such that it is displaceable relative to the guide rail—in order to provide support.

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 parallel spacer for a linear guideway comprises a plurality of parting portions, connecting portions and a retaining portion. Each of the parting portions is a thin member disposed between each pair of neighboring rollers. The connecting portions are employed to connect the parting portions and the retaining portion, and the retaining portion is arranged at a side of the respective rollers and located in an axial direction thereof, the retaining portion is an integral structure for connection with the respective connecting portions.

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: An interlocking construction between an end cap and a retainer plate to support rollers in a load-carrying race is made to provide an endless circulating circuit with no gap to allow the rollers smoothly rolling through there with keeping adequate posture. The slider has a carriage, end caps, rollers rolling through a circulating circuit, a retainer plate extending along the load-carrying race to keep the rollers inside the load-carrying race, and a binding strip to fasten the retainer plate to the carriage. The retainer plate comes into connection with spigots extending out of the end caps. Lengthwise opposite ends of the retainer plate conform to ends of the spigots in a complementary relation to fit over the ends of the spigots in a sliding direction.

Abstract: A linear motion apparatus has a linear track, a slider and two sliding-assistant units for a linear motion apparatus. The sliding-assistant units for a linear motion apparatus is mounted between the track and the slider to enhance ease of movement between the track and the slider, and each sliding-assistant unit has two roller rings to receive rollers. The roller rings are elongated rectangular rings, are selectively mounted oppositely crossly around each other. Each roller ring is designed with reduced components to make manufacturing and assembling the sliding-assistant unit easier. Moreover, the roller ring is designed as one unity so no seam will be formed due to assembling two different pieces, such that ensures contact between the rollers and the roller ring smooth.

Abstract: A spacer for roller bodies, which are guided in a roller bearing and which have an axis of symmetry and have an axis of symmetry, defining a rolling axis, about which they roll in a revolution path of the roller bearing, includes two diametrically opposed, spaced-apart end parts, which are each located transversely to the direction of motion of the roller bodies and have contact faces for rolling faces of the roller bodies; two diametrically opposed, spaced-apart lateral parts, and each of the lateral parts connects the two end parts, has a platelike shape, with a flat side, extending transversely to the rolling axis of the roller bodies, for contact with the roller bodies, and short sides extending substantially in the direction of the rolling axis of the roller bodies, and is stiffened with regard to bending essentially orthogonally to the rolling axis of the roller bodies in such a way that in its motion along the revolution path, it essentially maintains its shape; and at least one rib, connecting the two

Abstract: A roller element (10) is provided which has a central body (1) and a roller unit (2). The roller unit (2) is mounted so as to circulate on a non-circular race (21) about the central body (1) and so as to be mobile with respect to the central body (1) by the rolling movement of the rollers (3) of the roller unit (2) on the central body (1). The rollers (3) are configured as balls or substantially cylindrical elements. A peripheral surface of the rollers (3), for a substantial part, is shaped as a rolling surface that corresponds to the central body (1) and for rolling off on the central body (1). The elements of the roller unit (2) have play in relation to one another and/or the roller unit has play regarding its mobility in relation to the central body (1).

Abstract: A roller holder includes a number of couplers disposed between two longitudinal rods for coupling the rods together and for forming a number of compartments to receive rolling members, and two retaining devices disposed in each compartment of the roller holder and attached to the rods for retaining the rolling members in the compartments and between the rods and the couplers of the roller holder, and for preventing the retaining devices from being impacted by the rolling members, the retaining devices each include a projected portion located above the rods and a protruded portion located below the rods and the couplers for engaging with the rolling members.

Abstract: A linear motion guide unit is disclosed in which a tubular composition to provide a return passage is high in mechanical stiffness and also makes certain of sustainable application of lubricant to rolling elements rolling through the return passage, thereby ensuring proper lubrication under maintenance-free operation. The tubular composition to make the return passage is composed of a tubular skeleton to guide the rollers, and a porous compact impregnated with lubricant. The tubular skeleton is made up of forward and aft ends, a lengthwise column and a flexible spine, which extend between the ends. The flexible spine includes lengthwise opposite relief portions and a flexible middle section, which fit into the porous compact with separating from the porous compact to make a clearance between them. The flexible spine deflects as the rollers roll through the return passage, permitting the rollers coming into touch with the porous compact to lubricate the rollers.

Abstract: In a linear guide apparatus, a rolling-element accommodation belt 50 is incorporated into each of endless circulation passages. This rolling-element accommodation belt 50 is formed into a shape having ends and has a plurality of rolling-element accommodation sections for individually accommodating balls 46. Of the rolling-element accommodation sections, first rolling-element accommodation sections 55A located at the respective end sections are formed so as to constrain movement of a spacer section 59 located at the end section toward the outer periphery side of an endless circulation passage by means of the ball 46 accommodated in the spacer section. Second rolling-element accommodation sections 55B other than the first rolling-element accommodation sections are formed so as to enable removable accommodation of the balls 46 to be accommodated toward the inner periphery side of the endless circulation passage.

Abstract: A preload biased structure of a linear rail includes a rail and a sliding block disposed on the rail. The sliding block includes a sliding base, a supporting element, two connecting pieces and two locking pieces. The sliding element is provided with a connecting space. The front and rear end of the sliding base each is provided with abutting pieces. The abutting piece extends to form a biased block toward the connecting space. The biased block extends to form a biased slope. In assembling, the biased slope guides the supporting element to be inserted in the connecting space. The biased block provides a preloading force, whereby the supporting element can be fixed in the sliding base in advance. The locking pieces lock the two connecting pieces on both ends of the sliding base, so that the supporting element and the two connecting pieces can be assembled on the sliding base.

Abstract: A motion guide device is provided which comprises a chain of rollers in which retainers are interposed, in which the chain of rollers is given a degree of freedom of rotation. The motion guide device comprises a track member (5) on which a roller rolling part (5a) is formed which allows rollers (7) to roll on along the roller rolling part; a moving member (6) on which a loaded roller rolling part (6a) facing the roller rolling part (5a) is formed; a plurality of rollers (7) arranged on a roller circulation path containing a loaded roller rolling path (9) formed between the roller rolling part (5a) of the track member (5) and the roller rolling part (6a) of the moving member (6); and a plurality of retainers (8) respectively interposed between rollers of the plurality of rollers (7).

Abstract: A linear guideway essentially comprises plural bolt-hole covers, and each of the bolt-hole covers essentially includes a main body and an elastic part. The main boy includes a cover plate and a positioning portion. The periphery of the positioning portion is provided with a guiding portion and a groove, and the positioning portion is provided with plural cutting grooves vertical to the cover plate for offering flexibility to the positioning portion. The elastic part is installed in the groove of the positioning portion. With the elastic functions of the positioning portion and the elastic part, the bolt-hole cover can be fixed in the bolt hole more stably through the interference with the bolt hole.

Abstract: The rolling machine element includes a first member in which a raceway surface is formed and a second member on which the first member is mounted through the rolling elements and which is formed to be able to guide the first member in a specified direction. The rolling machine element is characterized in that the first member can be moved in the guiding direction of the second member by allowing the rolling elements to move in an out of the raceway surface in an orderly arranged state, and the crowning based on the oval shape is formed at the end part of the raceway surface of the first member where an access point for the rolling elements is formed.

Abstract: A slider has a slider main body which has a circulation sleeve whose inner portion forms a rolling element passage by being inserted into a hole penetrating in an axial direction, an end cap which has an outer peripheral track face of a direction changing passage in a curved shape for communicating a load track between two rolling element rolling grooves and the rolling element passage, and is fixed to an axial end portion of the slider main body, and an inner peripheral track member which has an inner peripheral track face of the direction changing passage, and is fitted to the end cap. An end portion of the circulation sleeve is provided with a plurality of positioning projected portions, and the end cap and the inner peripheral track member are provided with recess portions fitted with the positioning projected portions.

Abstract: A roller element (10) has a central body (1) and a roller unit (2). The roller unit (2) is mounted so as to circulate on a non-circular race (21) about the central body (1) and so as to be mobile with respect to the central body (1) by the rolling movement of the rollers (3) of the roller unit (2) on the central body (1). The rollers (3) are provided on the exterior of the roller unit (2) for rolling off on a rigid counter body (5). The roller element (10) is provided with a drive means (6) which engages with the roller unit (2) and drives the same in relation to the central body (1). The roller unit (2) is directly driven by engagement of the drive (6) between the rollers (3) and is pulled or pushed on the race (21) about the central body (1).

Abstract: A rolling element chain system for a linear guideway comprises a slide rail, a slide block, a plurality of rolling elements and a rolling element chain. The circulating path of the slide block is interiorly provided with a guiding groove with a width C, and the rolling elements roll within the circulating path and are confined by the rolling element chain. The rolling element chain has a plurality of spacers for separating the rolling elements from one another and linking portions with a thickness t for linking the rolling elements with one another. The spacer at each end of the rolling element chain has a retaining capacity B for holding the corresponding rolling element. The above structure satisfies the relation: C<t+B/?.

Abstract: A roller bearing includes an outer ring of metal, an inner ring of metal, and at least one roller body which is made of a material which includes ceramic, with carbon nanotubes and/or carbon nanofibers being embedded in the ceramic material of the roller body. As a result, the roller body is rendered electrically conductive, and allows measurement of a thickness of a lubricating film in the roller bearing. Furthermore, heat is carried from the inner ring to the outer ring as a result of increased thermal conductivity.

Abstract: A linear bearing includes a casing which has multiple slots defined axially through a wall thereof and rollers are engaged with the slots. Two grooves are radially defined in the outer surface of the casing and located close to two ends of the casing. The grooves communicate with the slots. Two collars are engaged with the grooves so as to prevent the rollers from disengaging from the slots. Each slot includes guide grooves defined in two insides thereof so that the two axles on two ends of each roller are engaged with the guide grooves.

Abstract: A guide carriage for a linear roller bearing is supportable in a longitudinally displaceable manner via at least one row of rollers on a guide rail which extends in a longitudinal direction, a separate rolling surface part which includes a rolling surface for the rollers is assigned to each row of rollers, and the rolling surface part is connected via an adhesive layer to a carrier body. The adhesive layer is designed essentially planar on the back side of the rolling surface part which faces away from the rolling surface, the rolling surface part being accommodated in a recess—which has an L-shaped cross section—of the carrier body.

Abstract: A linear motion guide unit has a binding strip adapted to fasten a retainer plate to a carriage miniature in dimension, but long in lengthwise direction. The linear motion guide unit has a retainer plate lying lengthwise of the carriage in opposition to load-carrying race to keep more than one roller running through the load-carrying race, and a binding strip to fasten the retainer plate to the carriage. The binding strip is composed of a major part having any number of bents which are positioned at regular intervals in the longitudinal direction of binding strip, and lengthwise opposite angled parts prepared to come into engagement with the end caps, so that the binding strip urges elastically at the bents thereof the retainer to come into close engagement with carriage.

Abstract: A linear motion apparatus has a linear track, a slider and two sliding-assistant units for a linear motion apparatus. The sliding-assistant units for a linear motion apparatus is mounted between the track and the slider to enhance ease of movement between the track and the slider, and each sliding-assistant unit has two roller rings to receive rollers. The roller rings are elongated rectangular rings, are selectively mounted oppositely crossly around each other. Each roller ring is designed with reduced components to make manufacturing and assembling the sliding-assistant unit easier. Moreover, the roller ring is designed as one unity so no seam will be formed due to assembling two different pieces, such that ensures contact between the rollers and the roller ring smooth.

Abstract: A linear guide device has a retaining piece (15) between two adjacent rollers (9). The retaining piece (15) has a retaining piece body (16) having left side-face section and a right side-face section that are parallel to the end face sections of the rollers (9), a first arm section (19) extending from the left side-face section of the retaining piece body (16) toward the end face sections of the two adjacent rollers (9) and fitting in a first guide groove (22) formed in one wall surface section of a circulation path (21), and a second arm section (20) provided on the right side-face section of the retaining piece body (16) so as to be parallel to the first arm section (19) and fitting in a second guide groove (23) formed in the other wall surface section of the circulation path (21).

Abstract: A rolling element chain has a connecting belt and multiple retaining elements. The connecting belt is extended longitudinally and has multiple receiving holes. The receiving holes are defined at intervals through the connecting belt and have two sides opposite to each other. The retaining elements are mounted in pairs on the belt near the sides of each receiving hole and each retaining element has multiple retaining surfaces adjacent to each other. Each retaining surface has a straight segment and a projecting segment having a projecting edge. The straight segments and the projecting segments of the adjacent retaining surfaces on each retaining element are arranged in an alternative manner. The retaining surfaces on each pair of the retaining elements are opposite and facing to each other.

Abstract: A linear slide includes an elongate guide rail, a sliding block, a pair of ball roller chains, and a pair of cylindrical roller chains. Each of the ball and cylindrical roller chains is disposed between the elongate guide rail and the sliding block to thereby permit the sliding block to slide along the elongate guide rail.

Abstract: A linear motion guide unit is disclosed in which the 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. A hole open to the turnaround passage is bored through an outward end surface of an end cap. A lubricant reservoir of porous compact product fits into a recess made in the outward end surface of the end cap. The lubricant reservoir has noses protruding to fit into the hole in the outward end surface of the end cap to expose itself to the turnaround passage in such a way forming a part of the curved wall of the associated turnaround passage. The noses come into rolling-touch with the rollers as they roll through the turnaround passage, applying the rollers with lubricant delivered from the noses.

Abstract: A guiding device for a synchronous connector comprises a strip-like synchronous connector and at least one connecting member. Both ends of the synchronous connector are formed with two opposite fixing seats. The connecting member with elastic deformation characteristic is serially connected and fixed in the fixing seats at both ends of the synchronous connector, slide correspondingly to the clearance change during the operation of the two ends of the synchronous connector, and bend correspondingly to the turning action of the synchronous connector. By such arrangements, the elastic deformation characteristic of the connecting member can be utilized to avoid the collision interference with the rail wall surface, and the linear guiding device will be circulated smoothly and stably. In addition, the guiding device has the effect of absorbing the radial deformation of the synchronous connector and producing sufficient degree of freedom.

Abstract: A linear motion guide unit is envisaged smooth transfer of a roller from a turnaround passage to a return passage and vice versa across a joint between the turnaround passage and the associated return passage. Protrusions extending stepwise from an end of the turnaround passage come into complementary fit joints with an associated end of a tubular member defining the return passage to make wall surfaces to guide axially opposite ends of the roller, in which the joints are staggered or different in their locations between wall surfaces. The return passage is defined with a fore-and-aft hole of rectangular shape in transverse section inside a tubular member that fits into a bore made in the carriage. The tubular member is joined at lengthwise opposite ends thereof together to the protrusions that are raised above end surfaces of the end caps to extend the turnaround passage into the bore.

Abstract: A parallel spacer for a linear guideway comprises a plurality of parting portions, connecting portions and a retaining portion. Each of the parting portions is a thin member disposed between each pair of neighboring rollers. The connecting portions are employed to connect the parting portions and the retaining portion, and the retaining portion is arranged at a side of the respective rollers and located in an axial direction thereof, the retaining portion is an integral structure for connection with the respective connecting portions.

Abstract: Linear roller bearing, for carriage (1) which is longitudinally displaceable along rail (2). Carriage (1) has an endless channel (8) for endless circulation of rolling bodies (9). Channel (8) has load section (10), return section (11) and two deflection sections (12) which connect load section (10) to return section (11). Rolling bodies (9) roll in load section (10) on raceways (10a, 10b), and returned, without load, in return section (11). Bodies (9) are deflected in deflection sections (12) between load section (10) and return section (11). Deflection sections (12) have one inner deflection means (14) with inner deflection race (16) and outer deflection means (13) with outer deflection race (15). Inner deflection means (14) and outer deflection means (13) are connected, integrally to one another.

Abstract: A linear guide apparatus is provided with two (upper and lower) tracks of rolling element race tracks formed on a guide rail and of rolling element race tracks formed on a slider main body so as to oppose the rolling element race tracks on the respective sides, i.e., four tracks of race tracks in total. A recess is provided below the lower rolling element race track on the slider main body and the end cap fixed to an end face of the slider main body is provided with a projection that engages with the recess so as to determine a position of the end cap.

Abstract: A linear guide apparatus has: a guide rail; a slider including a slider body; and a pair of end caps; a guide groove guiding the arm portions of the separators in a circulation direction of the cylindrical rollers when the cylindrical rollers circulate through the pair of the rolling element rolling grooves, the direction change paths, and the rolling element path; and separators each having: a separator body; and an arm portion integrally formed on the separator body, wherein a width of the guide groove is larger than that of the arm portions, the width of the guide groove in a region of each of the direction change paths is larger than that in a region where the cylindrical rollers linearly move, and end portions of each of the arm portions are Chamfered and directed in the circulation direction.

Abstract: A linear motion guide unit with high stiffness, high accuracy and long-lasting service life is provided in which a rolling element is a roller and a carriage of a slider is made long to allow a crowning profile to be long. The carriage has an overall length equivalent to substantially four times a width of a guide rail. The carriage is made thereon with a raceway surface that is modified near lengthwise opposite ends thereof crowning profiles each of which has a crowning length equivalent to four times as long as a diameter of the roller and also has a crowing depth equivalent to an amount of elastic deformation that occurs in the raceway surfaces and the roller when the slider undergoes a load reaching a half of a static nominal standard load.

Abstract: A reduction of the number of parts and the prevention of a gap and a difference in level from occurring in the passage route of the rollers. A slider S is provided with a pair of guide holes 31, 32 for forming a return guide path. Guide cylinders 34 in which the rollers 37 roll are inserted in the guide holes 31, 32. A pair of passage groove 42, 43 having different depth and intersecting with each other is provided in each of the end caps e1, e2. A divider frame 36 is provided integrally with one end of each guide cylinder 34 for defining the intersecting passage grooves. The divider frame 36 is inserted in a cross portion of the intersecting passage grooves, whereby the outward guide path and the return guide path are defined while still intersecting.

Abstract: The present invention relates to a linear motion rolling guide device which enables a movable element to linearly move through rolling elements, and to a lens device including the linear motion rolling guide device. A linear motion rolling guide device according to the present invention includes: a guide element 2 including a first guide groove 7 extending linearly and fitting holes 11; a movable element 3 including a second guide groove 8 extending linearly and facing said first guide groove 7 with a predetermined interval; a fixed element 4 for retaining the guide element 2; a roller unit 5 including a plurality of cylindrical rollers 14, which rolls freely and is placed between the first guide groove 7 and the second guide groove 8; and a pair of spring plates 6A, 6B for giving preload to the roller unit 5 through the guide element 2 and the movable element 3.

Abstract: A connector for a linear guideway is integrally formed by injection molding. The mold assembly of making the connector includes an upper mold, a lower mold and a pin. The variable cross section design of the pin enables the connector to have a plurality of ring-shaped portions with more than two different axial thicknesses, so that the distances between the respective rolling elements are different, and the frequencies of the respective rolling elements are also different, and as a result, the resonance sound pressure caused by the linear guideway and the machine are reduced. In addition, the variable cross section design of the pin reduces the manufacturing difficulty of making a relatively long connector.

Abstract: A retainer to be installed in a linear motion guide unit is disclosed which composed of embracing parts to hold a roller on diametrically opposite sides thereof, and connecting flanges joining the embracing parts together with one another. The embracing parts to hold the roller between them are each made with a first lip raised above any one side thereof, and a second lip raised above another side thereof. The first and second lips raised in opposite direction are placed in an offset or staggered relation with one another in lengthwise direction of the embracing part or in axial direction of the roller so as to be tough to suffer any distortion and/or damage on molding operation. The retainer can sustain ample lubricant near the lips. The embracing parts come into rolling-contact with the rolling surface of the roller while the connecting flanges come into sliding contact with axially opposite ends of the roller.