Abstract: The invention concerns a linear bearing element mounted on the running race of a guide rail and comprising, on at least one of its two front ends, a wiper which bears by an end region against the running face to retain lubricant in the linear bearing element, at lease one lubricant supply device, with its inlet end connected to an outer supply duct and its outlet, end connected with the bearing region being arranged on or in the bearing element.

Abstract: A linear guide provides a guide rail, rolling elements, a slider, and a seal device secured to the slider to close the gap between the inner surface of the slider and the outer surface of the guide rail, the seal device has a seal lip which is made of a rubber or synthetic resin, containing the lubricant. When the slider is mounted on the guide rail, the seal lip contacts with the outer surface of the guide rail to close the gap between the inner surface of the slider and the outer surface of the guide rail. The lubricant contained in the seal lip gradually oozes out to the drag surfaces of the linear guide.

Abstract: A sealing device for a linear guide providing a guide rail and a slider, which is mounted on each of both ends of the slider so as to sealingly close the gaps between the inner surface of the slider and the outer surface of the guide rail, provides a first layer of rubber or synthetic resin and a second layer of lubricant-contained rubber of synthetic resin which are at least partially laid on and bonded to each other, so that the lubricant is kept supplied from the second layer to the surfaces with which the sealing device is sealingly in contact.

Abstract: A linear guide apparatus provides a guide rail, a slider, balls, and a ball retainer having a core bar, ball holding portions and inner seal portions. The core bar, which is formed in a rectangle shape, has stopper portions at longitudinal ends and is coated with a rubber or synthetic resin member. The stopper portions project in an axial direction of the linear guide apparatus. The ball holding portions are arranged along both side edges of the ball retainer. The inner seal portions contact with at least an upper surface of a guide rail out of the upper surface of the guide rail and an inner surface of the slider confronting the upper surface of the guide rail. The ball retainer serves both functions of holding balls and sealing the balls.

Abstract: In this linear motion rolling guide unit, the attaching and detaching of underseals to and from a slider can be done easily, and the underseals are housed in the grindstone spaces in a casing and does not project from the lower surface of the slider. Therefore, a height measured from the lower surface of the slider in a track rail-saddling-on state to a lower end of the track rail can be secured sufficiently. End caps have projections provided with locking portions. The projections of the end caps are fitted into insert bores formed in elastic members of the underseals with the locking portions of the projections engaged with edge portions of locking bores in core metal members of the underseals as edge portions of the insert bores are elastically deformed.

Abstract: The present invention provides a linear guide apparatus comprising an axially extending guide rail having axial rolling member receiving grooves formed in both side surfaces thereof, a slider mounted on the guide rail and having load rolling member movement grooves opposed to the rolling member receiving grooves, and a number of rolling members inserted between the rolling member receiving grooves and the load rolling movement grooves and adapted to shift the slider along the rail by rolling movements. The slider comprises a slider body in which the load rolling movement grooves are formed in inner surfaces of a pair of skirt portions of the slider body, and rolling member returning passages parallel with the load rolling movement grooves are formed in the skirt portions. A pair of end caps each having arcuate passages connecting the load rolling movement grooves and the corresponding rolling member returning passages are secured to respective end surfaces of the slider body.

Abstract: The linear motion rolling guide unit according to this invention utilizes the whetstone accommodating spaces in the casing in mounting the under seals so as to secure a large enough gap between the lower end of the slider and the lower end of the track rail or the bed surface. The under seal consists of a core member and an elastic member secured to the core member. The under seals are installed in the whetstone accommodating spaces from under the casing and the end caps. The brackets integrally formed with the core member of the under seal are fitted in the engagement grooves formed in the end caps, and the locking claws provided at the upper end of the brackets are engaged in the engagement holes formed in the end caps, thus assembling the under seal into the slider.

Abstract: A linear motion guide unit is described that allows seal attachment to be performed highly accurately and easily as well as preventing dislocation of the seals after attachment. Said effects are obtained by providing projections and slots in a slider and seals and mutually engaging these projections and slots. In addition, a linear motion guide unit is described that allows lubricant to be supplied both quickly and easily without having to disassemble the linear motion guide unit even when small in size. Said effect is obtained by forming lubricant injection holes in the seals and injecting a lubricant such as grease through said lubricant injection holes with a lubricant injector.

Abstract: A lift has a member for supporting a material handling tool. The lift has a housing defining an interior and a longitudinally elongated slot orientated in the vertical direction. The housing has a wall encircling the slot. The member extends through the slot in the housing and moves in the longitudinal direction. A flexible closure strip has a length of at least twice the longitudinal length of the slot and is connected to the member at an approximate midpoint of the flexible closure strip and movable with the member. The flexible closure strip is in slideably sealing engagement with the slot. A pair of scroll boxes accumulates and dispenses the flexible closure strip as the member moves in the longitudinal direction. One of the scroll boxes is located in proximity to an upper wall portion of the wall and the other scroll box located in proximity to a lower wall portion of the wall.

Abstract: The invention concerns a wiper unit for a bearing component, preferably a linear rolling bearing component, mounted on a raceway of a guide rail and comprising at each front end, a wiper retained by a carrier plate, the wiper being provided with lubricant canals for supplying lubricant to the bearing component, and an end region of the wiper resting on the raceway to retain lubricant in the bearing component.

Abstract: The linear motion rolling guide unit according to this invention enables the under seals to be mounted to the end caps easily without being deformed as by buckling or without requiring high-precision machining. The under seal is provided, at its longitudinal ends, with locking bands that engage with engagement grooves formed in the end caps. Mounting and dismounting the under seal to and from the end caps are accomplished by expanding the locking bands in the longitudinal direction of the under seal. The under seal is allowed to undergo longitudinal and lateral deformations with respect to the end caps, which deformations caused by external force, thermal expansion and swelling. This construction prevents deformation of the under seal such as caused by buckling and improves the sealing performance.

Abstract: The linear motion rolling guide unit according to this invention enables the under seals to be mounted to the end seals reliably and free from deformation such as by buckling, thereby providing good sealing for relative-sliding portions at all times. The under seals are formed at both longitudinal ends with locking holes and the end seals are formed at the lower end with hook-shaped projections, each of which has a downwardly projecting portion and a bend locking portion. Mounting the under seals to the end seals is accomplished simply by fitting the hook-shaped projections of the end seals into the locking holes in the under seals, without requiring additional fastening parts.

Abstract: A miniature linear guide provides a guide rail having load ball rolling grooves, and a slider which is made up of a slider body having load ball rolling grooves which are confronted with those of the guide rail, a circulator having non-load ball circulating paths, and a holding plate interposed between the slider body and the circulator, and a number of balls rollingly fitted in the spaces defined by the load ball rolling grooves of the slider body and the guide rail and in the non-load ball circulating paths in the circulator. The miniature linear guide has a dust-proofing structure in which both end portions of the holding plate, as viewed in the direction of length thereof, are bent at right angles, thus forming protrusions, and seal members having sealing protrusions are formed on the protrusions so that the sealing protrusions are fitted in the load ball rolling grooves of the guide rail to sealingly close gaps formed between the guide rail and the slider.

Abstract: The present invention relates to a rolling guide unit wherein spatter scattered as a result of arc welding, gas welding and so forth does not adhere to the track rail. The effect is obtained by forming a fluororesin coating layer on the surface of the track rail.

Abstract: The linear motion rolling guide unit according to this invention enables the under seals to be mounted directly to the end seals without requiring other fastening parts, allows for machining errors and prevents the under seals from being deformed as by buckling. End seals attached to the outer sides of the end caps are formed at their lower ends with paired projections, and the under seals are formed at their longitudinal ends with locking notches. The under seals are placed in tight contact with the undersides of the casing and the end caps, and then the paired projections are inserted into the locking notches and the free ends of the paired projections are bent to firmly grip the core member of each under seal, thereby mounting the under seals to the end seals.

Abstract: A roller and track arrangement for sliding members, has an elongate track with one or more slots extending into the track. Each slot has a first position at its outer end and an enlarged portion toward its inner end. Support members extend into the slot or slots. Rollers on the support members are positioned in the enlarged portions. The enlarged portions can be circular in cross-section with ovoid rollers. The enlarged portions can also be elongate in cross-section. The rollers can then be spherical. A particular use is for telescopic sliding roof sections for an open back truck. Tracks are mounted on the top edges of the truck side walls. The roof sections extend into the slots and carry the rollers. Seals for the slots and between ends of the roof sections can be provided.

Abstract: The linear motion rolling guide unit makes efficient use of the spaces in the casing to easily attach the under seals to the end caps in such a way that deformation by thermal expansion and swelling can be dealt with, assuring a good sealing performance. The under seals are provided with a longitudinally extending core band, which has hook portions at its ends. The outer end surfaces of the end caps are formed with engagement holes, into which the hook portions are fitted. If there are differences in thermal expansion between the end caps and the under seals, or if deformations occur due to swelling, the hook portions of the core band elastically deform absorbing the dimensional changes to prevent the under seals from being distorted or buckled.

Abstract: The linear motion rolling guide unit has the under seals [13] mounted to the end seals [19] by fitting the engagement portions [30] formed at the longitudinal ends of the under seal [13] into the engagement holes [24] formed in the end seals [19]. The under seal [13] consists of an underside core member [27] having the engagement portions [30] and a resilient underside member [28] having lip portions [25,26]. Since the under seal [13] is not fixed to the casing [2] and the end caps [5], the under seal [13] will not easily deform or strain. Therefore, the under seals [13] attached to the end seals can seal the sliding surfaces very well.

Abstract: In the linear motion rolling guide unit, because the under seals are removably mounted to the end caps with ease, the under seals are prevented from being deformed or buckled and thus the guide unit does not require high precision machining. The under seals mounted to the end caps have lip portions that seal the gaps between the casing, the end caps and the track rail. A pair of projections provided to each end cap are inserted into an engagement opening formed in and extending longitudinally of the under seal to removably mount the under seal to the end caps with ease. The under seal is allowed to move with respect to the end caps as the under seal is deformed lengthwise and widthwide.

Abstract: The linear motion rolling guide unit permits the under seals to be mounted or dismounted easily to and from the end caps without causing deformations such as buckling to the under seal or requiring high precision machining. Projections with locking portions are provided to the undersides of the end caps and a half of each of the projections is cut away to make the projections elastically deformable. The under seal is formed with insertion holes for receiving the projections. The opposing longitudinal edges of each insertion hole are formed with locking detents at positions longitudinally offset or staggered. By elastically deforming the projections and inserting them into the insertion holes and then engaging the locking portions with the locking detents, the under seals can be mounted firmly to the end caps.

Abstract: A flat die thread rolling machine provides a cam drive for the reciprocating slide which operates through a linkage to cause reciprocation of the slide. The cam provides a dwell which holds the reciprocating die stationary before the commencement of the working stroke to allow insertion of a workpiece into the dies while the dies are stationary relative to each other. The cam produces slow acceleration of the reciprocating die during the initial portion of the rolling operation to prevent workpiece slippage. The working stroke exceeds one-half of the machine cycle. Die match can be adjusted while the machine is running. Separate adjustment means are provided to adjust the tilt, parallelism, and pitch of the dies, with the pitch adjustment permitting pitch adjustment while the machine is running and without affecting tilt and parallelism adjustment. A hydraulic drive is provided to power the machine and provide high torque during jog operations and speed control during normal running operation.

Abstract: The linear motion rolling guide unit allows the under seal for sealing the circulating passage for the rolling elements to be mounted to the end caps by simply engaging it with the end caps. The linear motion rolling guide unit also has the function of adjusting the under seal as it wears out. The under seal has a lip portion engaging with the underside of the casing and the end caps and a lip portion engaging with the side wall surface of the track rail. Locking portions are formed at longitudinal ends of the core member of the under seal, and insertion grooves are formed in the end caps attached to the ends of the casing. Mounting the under seal to the end caps can be accomplished simply by inserting the locking portions into the insertion grooves.

Abstract: The linear motion rolling guide unit utilizes the retainer bands for the rolling elements in positioning the under seals correctly with respect to the end caps and in facilitating the reliable mounting of the under seals onto the end caps. The end caps are formed with laterally extending first engagement grooves and vertically extending second engagement grooves. The core members of the under seals are formed at their longitudinal ends with brackets, each of which has a depressed portion for receiving the retainer band. The brackets are fitted into the second engagement grooves to place the under seals on the underside of the end caps. Then, the retainer bands are fitted into the first engagement grooves and into the depressed portions of the brackets to securely mount the under seals to the end caps.

Abstract: A linear drive which has a housing with a longitudinal slot. A drive part able to be longitudinally moved in the housing is connected by the aid of a link part, running in the longitudinal slot, with a guide part, which is guided for motion on a longitudinal guide arranged outside the housing. As a longitudinal guide a rod guide is provided, which has at least one guide rod adjacent to the housing and spaced from it radially. The guide rod is exposed along its guide stroke and has the guide part encircling it. There is therefore the possibility of accurate guiding of the moving unit without being affected by any tendency of the housing to splay outwards. The costs of manufacture are low.

Abstract: In the linear motion rolling guide unit the under seals are attached to the end caps to seal between the sliding surfaces in good condition in a way that prevents the under seals from being deformed or buckled. The under seals mounted to the end caps have lip portions that seal the gaps between the slider and the track rail. The projections provided to the end caps are fitted into the engagement openings formed in the under seal to removably mount the under seal to the end caps. The under seal is movable in the longitudinal direction relative to the end caps and is not rigidly secured to the casing. This construction renders the occurrence of deformation and strain unlikely.

Abstract: In the linear motion rolling guide unit according to this invention, the under seal is made up of a metal core member and a seal member. The metal core member is formed with a through-hole through which to insert a bolt. When the table is mounted on the casings, the bolts can be easily passed through the under seal by cutting a part of the seal member that corresponds in position to the through-hole in the core member. Therefore, in mounting the table to the casings, it is possible to apply a single kind of under seal to both types of structure--the top bolt insertion construction and the bottom bolt insertion construction --thus permitting the common use of components among the two constructions and reducing cost.

Abstract: A linear motion rolling contact guide unit includes a rail elongated in shape, a slider slidably mounted on the rail and a plurality of rolling members interposed between the rail and the slider. The rail has a top surface, a pair of side surfaces and a bottom surface, and a guide groove is formed in each of the side surfaces with a tapered relief trench formed at the bottom of the guide groove. A side recess is also formed in each of the side surfaces. The slider is provided with an end seal having a first seal lip at each of front and rear ends and also with a bottom seal having a second seal lip. The first seal lip is in sliding contact with the top surface and also with the guide groove and the tapered relief trench and the second seal lip is in sliding contact with the side recess of the rail.

Abstract: A linear motion slide unit comprises a slider axially movably mounted on a guide rail by a number of rolling members. A sealing device comprises a pair of end plates mounted at both ends of the slider and a connection plate, connecting the pair of end plates, with the connection plate disposed between the slider and the guide rail in the axial direction. First sealing members are disposed on the end plates where the end plates face the guide rail. Second sealing members extend along the axial direction of the connection plate.

Abstract: The invention relates to a protective structure associated with a work unit. The protective structure includes a mobile portion having movement in two senses according to a straight direction. The protective structure also includes two rotatable support elements idle about respective mutually parallel axes which are normal to the straight direction and which are internally supported by box structures connected to the mobile portion and which are arranged on opposite sides with respect to the mobile portion with reference to the straight direction. The protective structure further includes two blinds, respectively windable about the support elements and having a first end connected to the support element and a second end connected to a fixed structure on which a kinematic connector for the support element is supported.

Abstract: A linear motion rolling contact guide unit includes a rail, a slider comprised of a center block and a pair of front and rear end blocks, a plurality of rolling members interposed between the rail and the slider and a retainer plate mounted on the slider for providing an intended sealing effect. The end block is formed with an elongated slot and the retainer plate is provided with a projection engageable with the elongated slot such that the projection may move within the slot in the longitudinal direction over a predetermined distance. Thus, even if the retainer plate is comprised of a plastic material and thus expands or contracts relative to the slider for various reasons, such a change in size may be absorbed effectively so that the retainer plate is self-adjusted in position.

Abstract: Wiper unit for a bearing element, preferably a rolling bearing element, which is slidably mounted on the running surface of a shaped part and at least one of its front ends comprising a wiper blade retained by a supporting plate and whose one end region is in contact with the running surface for cleaning the same, characterized in that the wiper blade (5) comprises several flexible tongues (9 to 11) which lie in one comon plane before the mounting of the wiper unit on the bearing element (1) and whose ends are in resilient contact with respective sections of the running surface of the shaped part (2) in the assembled state.

Abstract: A telescopic cover apparatus, which is mounted on a machine tool, includes a telescopic cover, including first to seventh cover members slidably fitted with one another, and a pantogragh drive mechanism including first to sixth parallelogrammatic link mechanisms continuously arranged in the cover extension/contraction direction. Each link mechanism includes first to fourth link members and first to fourth joints for pivotally coupling the link ends to one another.

Abstract: A telescopic covering is provided that includes a number of cover bodies that fit into one another in a telescopic manner and each comprise a cover wall, two side walls, and a rear wall. To improve the support and guidance of the cover bodies upon and against one another, a respective profiled corner element, which extends in the direction of movement of the cover bodies, is disposed between the cover wall and each side wall of each cover body, with the profiled corner elements serving to support and guide the cover bodies upon one another.

Abstract: A dust seal device of a linear guide apparatus includes a pair of side seals respectively attached to end cap which are in turn attached to opposite ends of a slider main body. Each side seal has an inverted U-shaped and consists of a mandrel formed of a steel plate coated with a synthetic rubber. The side seal includes side groove seal portions formed at both sides of the inner edge of an opening of the side seal and an upper groove seal portion formed at an upper side of the inner edge. Each end cap includes a recessed groove formed in an inner peripheral edge surface of an opening of the end cap so that the recessed groove extends in a U-shape along the inner peripheral edge. The side seal is inserted into the recessed groove from a lower side of the end cap by pushing upwardly so that the side seal is fitted into the recessed groove.

Abstract: A dust seal device for a linear guide apparatus includes a pair of side seals and a pair of under seals. The side seal includes a pair of side surface side seals slidably in contact with side surfaces of a guide rail and an upper surface side seal slidably in contact with an upper surface of the guide rail. Each of these side seals has a seal holding plate made of a steel plate, a seal member secured to one long edge of the seal holding plate, and a spring portion formed on the other edge of the holding plate by cutting and bending an end portion of the holding plate. Each of the under seals also includes a holding plate and a seal member, with a spring portion formed in the holding plate. A pair of seal fixing plates are provided so that the side seals and/or the under seals are attached respectively to end caps through the seal fixing plates.

Abstract: End caps made from synthetic resin are respectively joined to opposite ends of a slider main body of a linear guide apparatus. Each end cap having a substantially inverted U-shape has a joining end surface formed with curved passages to bring ball rolling grooves of the slider main body into communication with each other to form circulating passages. A feed oil groove is also formed in the joining end surface of the end cap to supply lubricating oil to the curved passages. In order to prevent leakage of the lubricating oil from a minute gap between the joining end surfaces of the end cap and the slider main body, a band-shaped protrusion having two parallel ridges is formed along a peripheral edge of the joining end surface of the end cap. The band-shaped protrusion is elastically deformed by a clamping force when the end cap is joined to the slider main body by fixing screws such that the minute gap between the end cap and the slider main body is filled with the deformed band-shaped protrusion.

Abstract: A linear movement guide bearing including a main body accommodating a pair of side by side roller trains is linearly movable in an axial direction along a raceway surface through rolling of the roller trains. A pair of side protection covers formed of metal plates are attached to the main body to respectively cover substantially the whole lateral sides of the main body and end caps which are fixed to axial opposite ends of the main body. A pair of end protection covers formed of metal plates are respectively fixed to outer end surfaces of the end caps to protect the end caps. The side and end protection covers insure the mechanical strength of the guide bearing against external impacts. Seal members are respectively attached to lower edges of the side and end protection covers to seal clearances between the lower edges of the protection covers and the raceway surface.

Abstract: The device is remarkable in that the bottom part of the saddle is designed to cooperate with a means enabling to move in a controlled and limited manner, the to part of the said saddle being designed with a profiled opening over its length to enable the protective and sealing strip to pass, be guided and orientated, the said strip being fixed at the ends to the end parts of the body of the module thereby developing in a horizontal plane and wherein the inside of the saddle has means arranged in the profiled opening to enable the strip to be twisted and shaped in a vertical or slanted position over the majority of the length of the saddle.

Abstract: A sealing structure for preventing entry of foreign matter or lubricant leakage in the gaps formed between a linear motion bearing assembly movable along the length of a rail base. An elastic seal includes an end portion retained at the junction of the ends of the assembly with the rail base, and connecting portions integrally formed with the end portions at the junction of the sides of the assembly with the rail base. The inner periphery of the seal is slightly smaller than the periphery of the rail base to provide a positive seal. The ends of the assembly include stepped portions with inner peripheries slightly larger than the outer periphery of the end portions to permit the sealing structure to self-position above the rail base.

Abstract: An overrun preventing device to prevent a slider from falling off of a guide rail is fixed to one end of the guide rail of a linear guide apparatus. The overrun preventing device includes a main body made of a metal plate having an inverted U-shaped cross section, and a slide plate. The main body has lift preventing plate portions formed by bending lower edges of both side walls of the main body inwardly at right angles so that the lift preventing plate portions are engaged with rolling member rolling grooves formed in both sides of the guide rail to prevent upward movement of the main body. The slide plate has a rectangular shape. One end of the slide plate is inserted between the main body and the upper surface of the guide rail so that the slide plate is expandable with respect to the main body depending on a fixing position of the slide plate on the guide rail.

Abstract: A linear movement guide bearing includes a guide rail and a slider straddling the guide rail for movement in an axial direction through rolling of balls interposed between the guide rail and the slider. A pair of under seals are attached to lower surfaces of the slider so that inner edges of the slide are slidably in contact with the side surfaces of the guide rail. Each under seal has elastic projection portions at axial opposite ends which protrude vertically toward the lower surface of the slider. Each elastic projection portion is formed by a forked elastic projection having two projection pieces whose free ends are expanded outwardly. Hook-like holding projections are formed on the free ends of the two projection pieces and protrude outwardly therefrom. The slider has vertical apertures formed in the lower surface for fitting the forked elastic projections thereinto and has through bores respectively formed orthogonal to the vertical apertures.

Abstract: Cover device for providing a displaceable cover above an opening, a flexible polymer belt which is substantially more rigid in respect of deflection in a transverse direction than in respect of a longitudinal direction, and a displaceable device disposed in the opening and delimited at both sides by the belt. The portion of the belt on both sides of the device is supported only on rollers disposed only adjacent side walls of the opening, whereby the belt is supported only along opposite longitudinal side edges thereof.

Abstract: A dust seal device used with a linear guide apparatus includes a pair of side seals respectively fixed to front and rear end surface of end caps and a pair of under seals respectively removably attached to lower surfaces of side walls of a slider. Each side seal has an inverted U-shape with a pair of bent pieces formed by bending lower portions of both leg portions of each side seal inwardly at right angles in an axial direction so as to cover the lower end surfaces of one end cap. Each side seal also has projections formed by respectively bending lateral side portions of the pair of bent pieces further upwardly to constitute positioning and under seal fall-off preventing projections. Each under seal is of a rectangular strip shape having a length substantially equal to that of the slider, including the thickness of the end caps. Each under seal is attached to the slider by inserting each under seal between the bent piece and the lower end surface of the end cap.

Abstract: In a linear ball bush of part-annular form it is proposed that part-annular seals are secured against rotation about the cage axis by shape-locking engagement with a cage and are movable radially in relation to the cage axis over their substantially entire circumferential extent. Further it is proposed that longitudinal seal strips each comprise a root part received by a longitudinal groove of the cage and a tongue part resting on the shaft, these longitudinal sealing strips being provided with projections at their ends which rest under a longitudinal tension against an axially directed support shoulder of the cage.

Abstract: An attaching device for a bellows type dust cover of a linear guide apparatus includes a plate-shape main body and a bellows attaching plate portion integral with the plate-shape main body. The plate-shape main body has fitting plate portions which are formed by bending lower edge portions of both lateral side plate portions respectively inwardly at right angles so that both the fitting plate portions horizontally oppose each other. The fitting plate portions are respectively fitted into ball rolling grooves formed in both lateral sides of a guide rail, or into retainer relief grooves formed in groove bottoms of the ball rolling grooves. Thus, the plate-shape main body straddles an upper surface of the guide rail and sandwiches both lateral sides of the guide rail so that it is securely held to the guide rail. The bellows attaching plate portion is provided at one axial end of the plate-shape main body perpendicularly to the upper surface of the plate-shape main body.

Abstract: A dust seal attached to each of the end caps of a slider main body is sandwiched at the front and rear surfaces by an outer protector and an inner protector. Each of the outer and inner protectors has a substantially similar shape to the shape of the dust seal. The outer protector is attached to the front surface of the dust seal interposing a spacer to form a gap therebetween to thereby prevent conduction of heat from the outer protector to the dust seal when weld sputters are adhered to the outer protector. The inner protector is closely in contact with the rear surface of the dust seal to form a backup member.

Abstract: An operating apparatus includes a ball screw apparatus having a nut secured to a table which is fixed on sliders of a linear guide apparatus. The nut is engaged with a screw shaft and, when the screw shaft is rotated by a driving motor, the table having a member to be driven fixedly mounted thereon is moved together with the nut linearly and horizontally along the screw shaft. The ball screw apparatus and the linear guide apparatus is placed on a clean room, and a dust suction pump located outside the clean room sucks the dust produced in the clean room. Furthermore, a suction pipe of the dust suction pump is connected to a feed oil bore of the nut, which bore has been formed normally beforehand as a feed oil nipple. Thus, the dust produced in the inside of the nut is also sucked out by the dust suction pump. The suction pipe has a spiral portion near the nut.

Abstract: A machine tool comprises a work table arranged for being displaced in at least one coordinate direction relative to a spindle stock. Longitudinal drive means arranged beneath the work table are covered on both sides of the work table by means of a cover composed of telescoping elements. One of the said elements is provided in stationary arrangement adjacent one side wall of a trough enclosing the cover.In order to prevent the chips from forming into balls in front of the overlapping elements, when the extreme end position of the work table is reached, at least one opening giving access to the trough is provided on the upside of the one element, at the edge facing the side wall.

Abstract: Presented is a slide roller apparatus of elegant simplicity, high precision/cost ratio and few parts where the car/track/rollers are relatively movable and the only needed parts (excepting for attachment means). The car is unitary without end caps for the roller groove, the roller groove being machined or otherwise formed into the car with great precision. The ends of the rollers have a sliding engagement with a rail track surface. The tracks and cars may be made of high precision extruded aluminum hard coated and impregnated with a high lubricity material. The rollers preferably are softer than the tracks and may be made of plastic material. The slide roller apparatus has far ranging applications from sail boats to machine tools.

Abstract: Each of the pair of under seals which are respectively attached to the lower surfaces of the side walls of a slider includes an elongate core metallic plate and a rubber member secured to the core metallic plate and having a lip portion protruding inwardly from the inner edge of the core metallic plate. Each of the end caps attached to opposite ends of a slider main body is formed with an under seal holding groove in a joining surface of each leg portion of the end cap. The slider main body is formed with a stepped recess portion to accommodate the under seal in the lower surface of each side wall. The opposite ends of the under seal are fitted into and held in the under seal holding grooves of the end caps and the remainder of the under seal is accommodated in the stepped recess portion of the slider main body. The lip portion os the under seal is slidingly in contact with the lateral side of the guide rail to prevent dust from entering into the inside of the slider.