Abstract: A tape-shaped product and a belt for a ball chain are provided. A tape-shaped product of synthetic resin includes a tape of a thermoplastic resin, and a preliminarily stretched fibrous member of a thermoplastic resin contained therein along longitudinally parallel edges or in proximity thereto of the tape. A belt for a ball chain, includes a tape-shaped product of synthetic resin formed by injection molding, together with a fibrous member as an insert of a resin of the same kind as that of the fibrous member so that the fibrous member is disposed along the longitudinal edges or in proximity thereto, ball-insetting holes are disposed at equal intervals, and ball-retaining projections are disposed around the holes.

Abstract: A ball screw device or linear motion guide device has a seal member preventing dust and dirt from entering into a movable member of a linear motion guide device and seals out fine dust, dirt or like by surely contacting a seal to a shaft member without providing a large margin to the seal. The seal member includes a body portion mounted to the movable member and a lip portion contacting an outer portion of the shaft member, the lip portion has an oblique surface having an axial section inclining with respect to its axial direction, the body portion has an urging member urging the lip portion in a diameter direction of the shaft member and a reinforcing portion reinforcing the body portion. The urging member is located on the reinforcing portion side than the tip end of the lip portion in the axial sectional shape of the lip portion.

Abstract: The present invention provides a screw device enabling insulation of sounds occurring from the inside of the screw device when circulating rolling elements.

Abstract: A linear actuator unit has a slide plate which is allowed to freely move along the outer rail while causing a cover to retreat. The linear actuator unit includes: an outer rail, which is formed into a cylindrical shape, and includes the slit-opening portion formed along an axial direction thereof; the slide plate (3), which is coupled to an inner block in the hollow portion through the slit-opening portion; a cover belt, which is tensioned between both ends in a longitudinal direction of the outer rail so as to cover the slit-opening portion; a belt-guiding member, which separates the cover belt from the outer rail correspondingly to movement of the slide plate; and a seal member, which seals between the belt-guiding member and the cover belt and between the belt-guiding member and the outer rail.

Abstract: A tape-shaped product and a belt for a ball chain are provided. A tape-shaped product of synthetic resin includes a tape of a thermoplastic resin, and a preliminarily stretched fibrous member of a thermoplastic resin contained therein along longitudinally parallel edges or in proximity thereto of the tape. A belt for a ball chain, includes a tape-shaped product of synthetic resin formed by injection molding, together with a fibrous member as an insert of a resin of the same kind as that of the fibrous member so that the fibrous member is disposed along the longitudinal edges or in proximity thereto, ball-insetting holes are disposed at equal intervals, and ball-retaining projections are disposed around the holes.

Abstract: Provided are a motion guide device and a screw device each having a cover for protecting the device against moisture, such as coolant, and powder dust. The motion guide device has a raceway member 11, a moving member main body 21 mounted on the raceway member 11 through a plurality of rolling elements and cap members 22 attached to respective end surfaces of the moving member main body 21 in a relative moving direction. A seal cover 50 is provided having a cover main body 51 that covers each of the cap members 22 and a seal section 55 that is provided between the cover main body 51 and a cap member-side end surface of the moving member main body 21 to stop a gap between the cap member-side end surface of the moving member main body 21 and the cover main body 51. This structure makes it possible to reliably prevent any foreign material, such as powder dust or swarf, and moisture, such as coolant, from getting into the inside of the moving member 20.

Abstract: Provided is a screw device capable of reducing noise generated therefrom. The screw device has a screw shaft 5 having a rolling-element rolling groove 5a spirally formed on an outer peripheral surface of the screw shaft; a nut 6 having a loaded rolling-element rolling groove 6a spirally formed on an inner peripheral surface of the nut and facing the rolling-element rolling groove 5a of the screw shaft 5 and a rolling-element return path connecting an end of the loaded rolling-element rolling groove 6a with an other end thereof; and a plurality of rolling elements 7 arranged in a rolling-element circulation path. A low-noise plate 12 is mounted on a flange 9 provided at an axial end of the nut 6 so that the low-noise plate 12 covers at least a part of an end surface of the flange 9.

Abstract: A linear actuator unit has a slide plate which is allowed to freely move along the outer rail while causing a cover to retreat. The linear actuator unit includes: an outer rail, which is formed into a cylindrical shape, and includes the slit-opening portion formed along an axial direction thereof; the slide plate (3), which is coupled to an inner block in the hollow portion through the slit-opening portion; a cover belt, which is tensioned between both ends in a longitudinal direction of the outer rail so as to cover the slit-opening portion; a belt-guiding member, which separates the cover belt from the outer rail correspondingly to movement of the slide plate; and a seal member, which seals between the belt-guiding member and the cover belt and between the belt-guiding member and the outer rail.

Abstract: A guide table device is provided with a lower-side plate 10 provided with a pair of rolling member rolling grooves 11 formed in a first (X) direction, an upper-side plate 30 provided with a pair of rolling member rolling grooves 31 formed in a second (Y) direction, an intermediate member 20 having rectangular configuration provided with four side portions to which four rolling member rolling grooves 21 are formed so as to be opposed to a pair of rolling member rolling grooves of the lower-side plate and a pair of rolling member rolling grooves of the upper-side plate, and a plurality of balls 40 disposed to be rollable between four rolling member rolling passages formed by the lower-side plate, the upper-side plate and the intermediate member. The four rolling member rolling grooves 21 formed to the four side portions of the intermediate member 20 are formed on the same plane.

Abstract: A structure for closing a track rail mounting hole is disclosed, which prevents a closing cap from being press-fitted with an inclined state into the rail mounting hole, thereby being capable of positively preventing formation of a gap between the rail mounting hole and the closing cap. The closing cap includes a fitting portion having an outer diameter larger than an inner diameter of the rail mounting hole, to be press-fitted into the rail mounting hole; and a leading end portion to be inserted into the rail mounting hole before press-fitting the fitting portion into the rail mounting hole, for provisionally positioning the closing cap with respect to the rail mounting hole.

Abstract: Provided is a rolling-element screw device in which a recess can be easily formed in an outer diameter portion of a nut main body for receiving a circulation member. At both ends of a straight passage 5 of the nut main body 2, a pair of circulation members 8 is provided respectively, in each of which a direction change passage 6 is formed for connecting the straight passage 5 to a loaded rolling-element rolling passage 3. The circulation members 8 in a pair are fit in a pair of recesses 15, respectively, formed in the outer diameter portion of the nut main body 2. The direction change passage 6 of each circulation member 8 has a curve passage 22 which is connected to the loaded rolling-element rolling passage 3. The curve passage 22 is formed in such a way that, when seen in the axial direction of the nut main body 2, the track of the center of each rolling element 7 moving in the curve passage takes the shape of an arc.

Abstract: A track rail is composed of a pair of rail members in which rolling contact surfaces for rolling bodies are formed, respectively, and a rail housing equipped with a pair of rail mounting grooves in which those rail members are fitted, respectively. Each of the rail members is fixed within a corresponding one of the rail mounting grooves via an adhesive layer. A reference projection, formed on a bottom of one of the pair of the rail mounting grooves, is in contact with a corresponding one of the rail members without the intermediary of the adhesive layer. The rail member fitted in the one of the rail mounting grooves is adhesively fixed in a state of being abutted against the reference projection. The rail member fitted in the other rail mounting groove is adhesively fixed at a predetermined distance from the reference projection.

Abstract: Provided is a bearing bush enabling excellent advancing and retreating movements of a shaft member by eliminating a clearance between the bearing bush and the shaft member to eliminate a backlash therebetween, capable of reducing a load of dimension control on both the bearing bush and the shaft member, and capable of being manufactured at a low cost. The bearing bush (4) for supporting the reciprocating movement of the shaft member (1) in an axial direction has a receiving hole through which the shaft member (1) is passed. Grooves (40) are sequentially formed at predetermined intervals in an inner peripheral surface of the bearing bush (4) facing the receiving hole. An inner diameter of the receiving hole is formed to be equal to or smaller than an outer diameter of the shaft member (1), and the bearing bush is press-fitted to an outer peripheral surface of the shaft member (1) in a state of a so-called interference fit.

Abstract: Provided is a screw device capable of reducing noise generated therefrom. The screw device has a screw shaft 5 having a rolling-element rolling groove 5a spirally formed on an outer peripheral surface of the screw shaft; a nut 6 having a loaded rolling-element rolling groove 6a spirally formed on an inner peripheral surface of the nut and facing the rolling-element rolling groove 5a of the screw shaft 5 and a rolling-element return path connecting an end of the loaded rolling-element rolling groove 6a with an other end thereof; and a plurality of rolling elements 7 arranged in a rolling-element circulation path. A low-noise plate 12 is mounted on a flange 9 provided at an axial end of the nut 6 so that the low-noise plate 12 covers at least a part of an end surface of the flange 9.

Abstract: A guide table device is provided with a lower-side plate 10 provided with a pair of rolling member rolling grooves 11 formed in a first (X) direction, an upper-side plate 30 provided with a pair of rolling member rolling grooves 31 formed in a second (Y) direction, an intermediate member 20 having rectangular configuration provided with four side portions to which four rolling member rolling grooves 21 are formed so as to be opposed to a pair of rolling member rolling grooves of the lower-side plate and a pair of rolling member rolling grooves of the upper-side plate, and a plurality of balls 40 disposed to be rollable between four rolling member rolling passages formed by the lower-side plate, the upper-side plate and the intermediate member. The four rolling member rolling grooves 21 formed to the four side portions of the intermediate member 20 are formed on the same plane.

Abstract: The present invention provides a screw device enabling insulation of sounds occurring from the inside of the screw device when circulating rolling elements.

Abstract: The present invention provides a structure for closing a track rail mounting hole, which prevents a closing cap from being press-fitted with an inclined state into the rail mounting hole, thereby being capable of positively preventing formation of a gap between the rail mounting hole and the closing cap. The closing cap (70) includes: a fitting portion (71) having an outer diameter larger than an inner diameter of the rail mounting hole (11b), to be press-fitted into the rail mounting hole (11b); and a leading end portion (72) to be inserted into the rail mounting hole (11b) before press-fitting the fitting portion (71) into the rail mounting hole (11b), for provisionally positioning the closing cap (70) with respect to the rail mounting hole (11b).

Abstract: A return pipe is constituted by combining a pair of return pipe halves split along a non-load passage. A pipe hold down member is fixed to a nut member so as to be astride the return pipe, fixing the return pipe to the nut member. A flange portion is formed on each of the return pipe halves, while a pair of fixing leg portions covering the flange portion of each return pipe half is formed on the pipe hold down member. Fastening members pass through the fixing leg portions of the pipe hold down member and the flange portion of the return pipe halves and are fastened to the nut member. When the fixing leg portions of the pipe hold down member are fixed to the nut member by the fastening members, an engagement portion of the pipe hold down member is configured to tighten the pair of the return pipe halves in the direction where split faces of the return pipe halves abut against each other.

Abstract: Provided are a linear guide device and a method of manufacturing a track rail of the linear guide device which make it unnecessary to finish rolling contact surfaces for rolling bodies for the purpose of ensuring parallelism between the rolling contact surfaces after fixing a plurality of rail members, in which the rolling contact surfaces for the rolling bodies are formed, to a rail housing while making it possible to achieve a maximum possible improvement in production efficiency and a reduction in production cost in producing the track rail. The track rail is composed of a pair of the rail members in which rolling contact surfaces for rolling bodies are formed, respectively, and the rail housing equipped with a pair of rail mounting grooves in which those rail members are fitted, respectively. Each of the rail members is fixed within a corresponding one of the rail mounting grooves via an adhesive layer.