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 rotting 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 aim 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.

A linear guide with lubrication device includes: a elongate rail; a slide module slidably mounted on the elongate rail and including a slide block and two recirculation members, which are respectively mounted to two end faces of the slide block and include a plurality of recirculation passages, in which at least one of the recirculation members includes a lubricant reservoir and a fixing through hole formed therein such that the lubricant reservoir, the recirculation passage, and the fixing through hole are in communication with each other and the lubricant reservoir receives lubricant filled therein; an application member received in the fixing through hole; a transferring member covering the application member and the transferring member absorbing and transferring lubricant to the application member. Rolling bodies, when moving through the recirculation passage, may contact the application member to have lubricant applied thereto.

A threadless linear guide includes a rail, a slide block, a recirculation assembly, and a fixing member. The slide block, the recirculation assembly, and the fixing member are positionable with respect to each other through retention engagements therebetween so that the components can be coupled to each other without screws. A reinforcement plate is provided for reinforcing the strength of the recirculation assembly for the recirculation assembly is generally formed of injecting molding, while the fixing member and the reinforcement plate are made of metal. Thus, with the fixing member and the reinforcement plate enclosing the recirculation assembly, any foreign object jamming in the interior would not cause the rolling bodies to eject out through the recirculation assembly during the operation of rolling bodies.

A motion guiding device includes a supporting body and a moving body. The moving body includes a moving body main body, a cover body and a circulation component. The cover body includes a first lubrication groove. The motion guiding device is further provided with a lubrication path component, the lubrication path component including a second lubrication groove having a cross-sectional area less than that of the first lubrication groove. When a lubricating oil is used as the lubricant, the lubricant is supplied by a lubricating oil lubrication path formed by the first lubrication groove and the second lubrication groove. In this way, in the motion guiding device, the lubrication path may be widened when the lubricating grease is used to lubricate, while the lubrication path may be narrowed when the lubricating oil is used to lubricate, so that a good lubrication may be easily achieved.

A motion guide apparatus is provided which can make a carriage compact without reducing a rated load and an allowable load. The motion guide apparatus includes: a track member (1) and a carriage (2) that moves along the track member (1). A circulation path (7) of the carriage (2) includes a loaded path (C1), a return path (C2) parallel to the loaded path (C1), and a substantially U-shaped turn path (C3) connected to the loaded path (C1) and the return path (C2). At least a part of the turn path (C3) bends in side view in a direction where the loaded path (C1) and the return path (C2) coincide.

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).

A roller-type linear guide with an oil storage function and an oil storage accessory thereof are disclosed. The roller-type linear guide includes a rail, a slider unit, a plurality of rollers, and an oil storage member. The slider unit is mounted on the rail to form a circulation passage. The rollers are disposed in the circulation passage to drive the slider unit to reciprocate on the rail. The rollers each have a rolling surface. A non-load passage of the circulation passage has two first inner surfaces facing the rolling surface. The oil storage member is disposed in a concave portion of the first inner surfaces, thereby lubricating the rollers running in the non-load passage. The oil storage accessory is disposed in a through hole of the slider rigid body to form the non-load passage.

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.

A linear motion device includes a guiding member extending along a first direction and a slide block assembly slidably disposed on the guiding member. The slide block assembly includes a slide block, two ball race members at two sides of the slide block, two circulation members at two sides of the slide block along the first direction, and two end covers assembled on the circulation members. One or more of the circulation members has two revolve channel members. The revolve channel member has an upper protrusion member and a lower protrusion member protruding out of the upper protrusion member. Since the protruding portion of the lower protrusion member can be served as the bottom surface of the revolve curve, stepped structures caused by assembling or component tolerances are not formed between the bottom surface and nearby portions, and the balls can roll stably in the linear motion device.

A motion guide apparatus which prevents a retainer from falling-off. A motion guide apparatus includes a track member having a rolling element rolling portion; a movable member having a loaded rolling element rolling portion facing the rolling element rolling portion of the track member; a return path; and a turn-around path connected to a loaded path and the return path; a plurality of rolling elements placed in the loaded path, the return path, and the turn-around path; and a retainer configured to hold at least one of the plurality of rolling elements. Grooves into which an end of the retainer in a width direction thereof enters are formed in the loaded path, the return path, and the turn-around path. A width of the grooves in at least a part of the turn-around path and/or in the return path is greater than a width of the groove in the loaded path.