A linear motion assembly having a static coefficient of friction, S, as measured between an inner component and an outer component, and a dynamic coefficient of friction, .sub.D, as measured between the inner component and the outer component, wherein .sub.S/.sub.D is less than 2.0, such as less than 1.9, less than 1.8, less than 1.7, or even less than 1.6.

Closure system for connecting two contiguous transport units in a convoy for the transport of goods, the closure system comprising an accordion-shaped element configured to change the length thereof along a longitudinal axis of the convoy and comprising a central portion and a pair of outer portions placed on opposite sides with respect to said axis, the thickness of the accordion-shaped element decreasing from the central portion to the outer portions.

A low dust linear module includes a rail unit, a slide seat unit, a dustproof strip and two magnetic members. The two magnetic members are disposed at the two slide seat end portions of the slide seat, the first magnetic attraction gap is defined between the magnetic attraction area and a corresponding one of the magnetic members, and the second magnetic attraction gap is defined between the magnetic attraction area and the slide seat cover. When the dustproof strip passes through and are magnetically attracted by the magnetic members, a gap will appear between the magnetic members and the slide seat and the slide seat cover, so that the magnetic members and the dustproof strip are kept in a gap without friction, so as to avoid the generation of dust due to friction, so that the linear module can operate normally and maintain the standard of the working environment.

To provide a linear guide device having a higher dustproof performance and a dustproof function with a higher degree of freedom. A linear guide device includes a guide rail, a slider, and a rolling element, a seal member which seals a gap formed between a side surface portion of the guide rail and an inner side surface portion of the slider. The seal member includes a first seal member provided at the inner side surface portion of the slider, and a second seal member which is larger in width than the first seal member and is provided in a bottom surface portion of a slider body to be independently detachable from the bottom surface portion, as superimposed on the first seal member.

A linear-motion bearing is disclosed including: an outer cylinder member having a plurality of endless steel ball circulation paths each including an outer-peripheral-side steel ball circulation path and an inner-peripheral-side steel ball circulation path, and having planar spaces in regions that are opposed to the endless steel ball circulation paths, respectively; a plurality of steel balls accommodated and arrayed in the endless steel ball circulation paths: and a synthetic resin plate including a metal piece at which the synthetic resin plate is held in contact with a steel ball row, the metal piece having an elongated shape in a direction along the steel ball row in the inner-peripheral-side steel ball circulation path, in which the elongated metal piece is curved so as to protrude toward an inner peripheral side of the outer cylinder member in the direction along the steel ball row in the inner-peripheral-side steel ball circulation path.

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.

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 linear moving bearing, comprising: a retaining portion having at least one receiving chambers at lateral sides thereof; each receiving chamber being installed with at least one set of sliding track which is formed by two round rods; each of receiving chamber formed with two stop walls at an upper and lower ends of an opening of the receiving chamber; the stop walls serving to retain the round rods in the receiving chamber; each of the set of the sliding track resisting against a sliding rod so that the round rod being slidable along the sliding track. The stop walls are screwed or buckled to an upper and a lower end of a lateral wall aside the opening of the receiving chamber. The sliding rod has a sharp angle resists against a middle area between the two round rods of a set of the sliding track.

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.

An actuator includes a track member provided with a base extending along a longitudinal direction and a pair of walls erected from opposite ends of the base in a width direction, with rolling-element rolling grooves formed along the longitudinal direction; and a moving member assembled movably along the longitudinal direction between the walls, with respective load rolling-element rolling grooves corresponding to the rolling-element rolling grooves being formed in the moving members; and a screw shaft passed through a through-hole formed in the moving member, with a screw rolling-element rolling groove formed in the screw shaft, the screw rolling-element rolling groove being spiral in shape, wherein the moving member has the nut member attached to the through-hole, with the screw load rolling-element rolling groove corresponding to the screw rolling-element rolling groove formed in the nut, the nut member is assembled via a flange member which includes a lubricant supply device.