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.

A linear roller bearing having a rolling body circulating shoe (15) including end-arranged attachment elements (16) as a lubricating device, wherein each attachment element contains a volume (9) for storing lubricant and transferring lubricant to a rail that guides the circulating shoe. According to the invention, the attachment element is formed from an inner housing shell (8b), which lies against the head piece (4) of the support body (1) of the circulating shoe, and an outer housing shell (8a), which faces away from the support body, which housing shells can be fastened to the head piece of the support body by a central screw (17).

A rolling guide device includes a track member, a moving member, and a plurality of rolling bodies. Rolling-body rolling surfaces that come into contact with an rolling-body outer circumferential surface of a rolling body are respectively formed in wall surfaces of a pair of wall portions included in the track member facing each other, a scraper including a pressing portion that presses the rolling-body rolling surfaces is turnably installed in the moving member, the scraper includes at least an attachment portion and a pressing portion, and is formed such that a frictional force of the pressing portion with respect to the rolling-body rolling surfaces is smaller than a frictional force of the attachment portion with respect to an attachment shaft formed in the moving member.

Provided is a linear motion device having higher rigidity, higher load resistance, and superior guiding precision. In this linear motion device, a linearly moving element 2 that moves linearly relative to a rail element 1 is provided, load paths 4 through which rolling elements 3 move are provided between the rail element 1 and the linearly moving element 2, and endless rolling element circulation paths are formed in which the load paths 4 are made to communicate via return paths 5 with no-load paths 6, wherein the rolling elements 3 are cylinders of which the length is at least three times the diameter, the rolling elements 3 are configured so as to circulate through the endless rolling element circulation paths while being rotatably held by rolling element holders 10 configured by spacers 8 provided between adjacent rolling elements 3 and belt-shaped linking elements 9 that link spacers 8 together at both ends, the no-load paths 6 are formed by placing no-load path-constituting members 12 in linear holes 11 formed in the linearly moving element 2, and the no-load path-constituting members 12 are configured such that the end surfaces of the rolling elements 3 are opened on the outward sides and the linking elements 9 of the rolling element holders 10 are exposed.

A linear motion guide unit restrains fluctuations in sliding friction and generation of heat by correcting the postures of rollers having been inclined in a no-load area such that their axes become orthogonal to a guide surface of a carriage to thereby introduce the rollers in proper postures into a load area. A retainer plate of the guide unit has a guide surface for guiding end surfaces of the rollers and has protrusions protruding from the guide surface at its opposite end portions facing crownings of the carriage. The rollers rolling from a turnaround passage to a load-carrying race are pressed by the protrusions toward the guide surface of the carriage so as to be arrayed in such a posture that the axes of the rollers become orthogonal to the guide surface on the inlet side of the crowning of the carriage, whereby the occurrence of roller skew is prevented.

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.

This rolling device 10 includes an inner member 11 provided with a rolling element rolling groove 11a, and an outer member 21 attached to the inner member 11 to be relatively movable via a plurality of rolling elements 12. The outer member 21 includes an outer member main body portion 22 including a loaded rolling element rolling groove 25 forming a loaded rolling element rolling raceway in cooperation with the rolling element rolling groove 11a and a non-loaded rolling element rolling raceway 33 arranged to correspond to the loaded rolling element rolling groove 25, and a pair of lids 24 attached to both end surfaces of the outer member main body portion 22 in a relatively-moving direction and having at least a part of a direction changing raceway 35 connecting one end of the loaded rolling element rolling raceway to one end of the non-loaded rolling element rolling raceway 33. Each of the lids 24 is provided with a projection portion 24b including at least the part of the direction changing raceway 35. Also, the projection portion 24b is provided with a lubricant supply path 38. With this configuration, this rolling device 10 can circulate the plurality of rolling elements smoothly in an endless circulation raceway.

In the linear motion guide unit, a retainer plate for retaining rolling elements, or rollers, is prevented from deformation so as to smoothly guide the rollers. The retainer plate is composed of a retainer member, frame members fitted into respective through holes formed in the retainer member, and a fixing member disposed in a longitudinally extending recess of the retainer member. The frame members form a predetermined gap between the fixing member and a carriage. Tightening forces of fastening bolts are not applied to the retainer member, thereby avoiding deformation of the retainer member.

Provided is a rolling guide device which is capable of preventing uneven wear of a holding belt by alleviating a tensile force that acts on the holding belt when the holding belt circulates in an endless circulation path together with rolling elements. The endless circulation path has a guide groove configured to guide movement of the holding belt in the endless circulation path. A condition of t.sub.max< is satisfied, where: t.sub.max represents a maximum clearance between both end portions of the holding belt which are opposed to each other in the endless circulation path; is expressed by $=2{}_0^{\frac{}{2}}\sqrt{{\left(a\sin \right)}^2+{\left(c\cos \right)}^2}d$

A linear module includes: a base, a slide stage, two support frames, two retaining units and a steel belt. With the pivoting freedom given by the guide portions of the retaining units, when the slide stage moves, the rolling elements can be abutted more closely against the contact surface of the steel belt via the pivoting of the guide portions, so as to reduce the occurrence of deformation and clearance produced by the steel belt, which not only improves the sealing performance of the steel belt and operation smoothness of the linear module, but also produces a dust proof effect, thus achieving the purposes of automatically adjusting contact angle, preventing deformation while extending the life of the steel belt.