A curvilinear rolling guide unit allows a slider to readily straddle an endless guide rail and can prevent leakage of lubricant from a lubrication hole formed in each end cap. Each end cap is composed of an end cap body and a spacer. The end cap body has a lubrication hole, a lubrication groove, a slit which are formed in an upper portion thereof. The lubrication groove establish communication between the lubrication hole and turnaround passages. The slit extends from the lubrication hole to the under surface of the upper portion. A lubrication plug is fitted into the lubrication hole of the end cap body, closes the slit, and has a hole formed therein and serving as a lubrication passage communicating with the lubrication groove.

An object is to provide a motion guide apparatus that can facilitate an assembly operation. An end member (4a, 4b) including an inner peripheral side of a direction changing path (2c) is placed on an end surface in a movement direction of a moving member body (3). At least one of a pair of the end members (4a and 4b) includes an opening (21) linking to the inner peripheral side of the direction changing path (2c) to load rolling elements (42) into a circulation path. Opposing surfaces (18) of the pair of the end members (4a and 4b) to the moving member body (3) are formed in flat surfaces. The pair of the end members (4a and 4b) molded integrally with a holding portion (5) is incorporated into the moving member body (3) in a direction orthogonal to the movement direction of the moving member body (3). A lid member (7a, 7b) closes the opening (21) in the end member (4a, 4b).

A guide device (1) is equipped with a rail (12) having a first surface (121) in contact with a mounting surface (111B), a second surface (122) opposite the first surface (121), a through hole (126) penetrating between the first surface (121) and the second surface (122), and a recessed portion (1260) that is an opening on a first surface (121) side of the through hole (126) and is formed to be recessed from the first surface (121) toward the second surface (122), wherein the recessed portion (1260) includes a third surface (1261) that is a surface orthogonal to the first surface (121) and orthogonal to a width direction of the rail (12); the recessed portion (1260) receives an eccentric part (141) that rotates eccentrically with respect to a reference axis orthogonal to the mounting surface (111B) to apply a force to the third surface (1261) in the width direction of the rail (12); and the through hole (126) has a diameter shorter than a length of the recessed portion (1260) in the width direction.

A measuring pressing die (43) is supported by a spherical concave seat (12). A measuring shaft member (45) is disposed coaxially with a reference axis () and is linearly guided in a direction of the reference axis () between the measuring pressing die (43) and a support table (16). After that, the load application apparatus measures an actual load in the direction of the reference axis () applied to the measuring shaft member (45) using a load cell (48) in a state in which the measuring pressing die (43) is pressed against the measuring shaft member (45) while the measuring pressing die (43) is rotated about the reference axis ().

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 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.

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.

A modular bearing segment is disclosed. The modular bearing segment having a first end and a second end and can include a retainer defining at least one bearing track having an open load bearing portion; a plurality of bearings positioned within the at least one bearing track; a bearing plate in load bearing communication with less than all of the plurality of bearings and positioned opposite the retainer; and a lid positioned on the bearing plate, fixed to the retainer and defining a rocker element retaining hole positioned above the bearing plate.

An object is to provide a motion guide apparatus that can facilitate an assembly operation. An end member (4a, 4b) including an inner peripheral side of a direction changing path (2c) is placed on an end surface in a movement direction of a moving member body (3). At least one of a pair of the end members (4a and 4b) includes an opening (21) linking to the inner peripheral side of the direction changing path (2c) to load rolling elements (42) into a circulation path. Opposing surfaces (18) of the pair of the end members (4a and 4b) to the moving member body (3) are formed in flat surfaces. The pair of the end members (4a and 4b) molded integrally with a holding portion (5) is incorporated into the moving member body (3) in a direction orthogonal to the movement direction of the moving member body (3). A lid member (7a, 7b) closes the opening (21) in the end member (4a, 4b).

End rings fit over the opposite ends of the retainer inserted in the outer sleeve to keep properly the retainer against either of rotational and axial directions. End rings fit over the opposite ends of the retainer extending out of the outer sleeve to make abutment against the outer sleeve to cover the outside peripheries of the retainer. The circular groove of the retainer is composed of the raceway groove having the raceway surface with the slit, the return passage lying in parallel with the raceway groove and a pair of turnaround passages to intercommunicate between the raceway groove and the return passage. The end rings are kept in angular location against rotation by means of engagement between the first projections at the opposite ends of outer circular groove of the retainer and the second projections in the inside circular grooves of the end rings. The outer sleeve is to keep the retainer in lengthwise direction.