Abstract: An end cap in the present linear motion guide unit is made up of an end cap major part and a spacer part, which, once assembled, define a turnaround passage between them to make sure of smooth running of the rolling elements. Especially, the turnaround passage in the end cap when viewed in the sliding direction of the slider is constituted with a curved route whose radius of curvature is constant, which extends from a center (Ok) of a load race to a center (Or) of a return passage, with making a detour to clear an upper edge of a track rail. A carriage of the slider has widthwise opposing return passages lying biased more sidewise inwards or center-ward than load races so as to make an interval or span (Pr) between the return passages less than a sidewise interval or span (Pk) between the load races. The curved route whose radius of curvature is constant, when viewed in the sliding direction of the slider, is arced over a semicircular range of 180 degrees.

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

Abstract: A linear motion 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: A linear motion rolling guide unit with underside seals not falling away from a slider even when mounting the slider on a track rail. An engaging member comprises a protrusion having two faces extending parallel to the sliding direction of the slider, one facing the track rail and the other facing away the track rail. The protrusion comprises an inner hook protruding toward the track rail and an outer hook protruding in the opposite direction and being out of phase with the inner hook in the sliding direction of the slider, and moves through the fitting hole while being elastically deformed in the process of pressing the engaging member into the fitting hole after the inner hook has been engaged with the fitting hole, and returns to its original shape when the outer hook passes through the fitting hole, whereby the inner and outer hooks hold the underside seal.

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

Abstract: A 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: A linear motion rolling guide unit capable of being adapted to an ultra-reduction in size. A recessed portion 23 is provided in each of the side faces 18 of a track rail R below a lower raceway face 2 and extends parallel to the axis of the track rail R. An underside seal 24 has a seal portion 24d facing the recessed portion 23. Engaging hooks 24c are provided at the two ends of the underside seal 24. End caps 3, 4 have engaging holes 26 engaging with the respective engaging hooks 24c. The underside seals 24 and the end caps 3 and 4 are each formed of a synthetic resin in one piece.

Abstract: A linear motion rolling guide unit, which has underside seals prevented from falling off a slider, comprises a slider S having a pair of end caps 2 secured at ends of a casing 1, and underside seals 6 provided between the pair of end caps 2 having engaging projections 12. Insertion holes 10 are formed in the underside seals 6 and engaged with the engaging projections 12 to secure the underside seals 6 to the slider S. Fallout-inhibiting protrusions 9 are provided at ends of each underside seal 6 in the longitudinal direction. The slider S has holding portions 14 each having a hole or a recess into which each of the fallout-inhibiting protrusions 9 is inserted when the underside seal is secured to the slider S. A gap is maintained between the holding portion 14 having the hole or the recess and the outer periphery of the fallout-inhibiting protrusion 9.

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 associated ends of the spigots in complementary to fit over the associated ends of the spigots in a sliding direction. Especially, butting extremities of the retainer plate and the associated spigots are made beveled ends in complementary relation to one another aslant in the sliding direction.

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.

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

Abstract: 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. In the end cap, there is made a recess as large as permitted. The end cap is holed to communicate the recess with a turnaround passage. A porous compact impregnated with lubricant fits into the recess. The 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, applying the rollers with lubricant delivered from the noses.

Abstract: A linear motion guide unit suitable for slender rollers, in which a tubular composition to define a return passage as well as a spacer piece to make a turnaround improve in property of retaining lubricant therein, thereby helping accomplish long-lasting service operation for lubrication. The tubular composition is composed of a tubular skeleton and a cellular member that fits into a window cut in the tubular skeleton. An end cap is comprised of an end cap major body, and two classes of spacer pieces nested in the end cap major body to define the turnaround passages. The spacer pieces of two classes are each made around outside surfaces thereof with some circular holes, which have functions of lubricant reservoirs, prevention of distortion or deformation caused in the molded spacer pieces, and ejector pinholes used to extract the molded spacer pieces out of the mold.

Abstract: A linear motion rolling guide unit with underside seals not falling away from a slider even when mounting the slider on a track rail. An engaging member comprises a protrusion having two faces extending parallel to the sliding direction of the slider, one facing the track rail and the other facing away the track rail. The protrusion comprises an inner hook protruding toward the track rail and an outer hook protruding in the opposite direction and being out of phase with the inner hook in the sliding direction of the slider, and moves through the fitting hole while being elastically deformed in the process of pressing the engaging member into the fitting hole after the inner hook has been engaged with the fitting hole, and returns to its original shape when the outer hook passes through the fitting hole, whereby the inner and outer hooks hold the underside seal.

Abstract: A linear motion guide unit is disclosed, in which a slider fitting over a guide rail for movement is comprised of three components save rolling elements. The three components are joined together in the slider with using no fastener such as threaded fasteners, but just with fit-engagement that makes it possible to shrink the slider down in size. The three components are made up of a carriage made therein with raceway grooves and return passages, an upper component applied to the carriage to fit into recesses on the top surface of the carriage, and a lower component applied to the carriage to fit into recesses on the bottom surface of the carriage. The upper and lower components are joined together with the help of fit-engagement of hooks and hook holes, with holding firmly the carriage between them.

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: 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.