Abstract: A guide post, guide sleeve, and ball bearing assembly especially for a die set has a leak proof seal contained within one end of the guide sleeve for slidably sealing the interface between the guide post and guide sleeve and slidingly cleaning the surface of the guide post during relative reciprocal movements of the guide post and guide sleeve. The assembly maintains optimal lubrication of the ball bearing assembly while providing a cleaner, more frictionless configuration.

Abstract: A stiffener assembly which provides for improved performance of a movable stage arrangement. Often, it is desired to provide a movable stage arrangement in which a stage moves linearly with respect to a stationary base. In many applications, it is necessary for the stage to move to successive rest positions, with movement of the stage inhibited at each of the reset positions. The stiffener of the present invention allows for controlled movement of a stage along its direction of travel, with the stiffener inhibiting undesired movement when the stage is at a rest position. In one form, a stiffener extends in the direction of travel of the stage, with one end of the stiffener assembly mounted to the stationary base, and the other end urged into frictional contact with the movable stage by a force applicator. As a result, the stiffener is placed in frictional contact with the movable stage.

Abstract: A stopper assembly for use in a linear motion rolling contact guide unit, including a rail formed with a pair of inner guide grooves, a slider slidably mounted on the rail and formed with a pair of outer guide grooves, each located opposite to a corresponding one of the inner guide grooves to thereby define a guide channel and a plurality of rolling members provided in the guide channel, generally includes a generally U-shaped main body and a bolt. The main body includes a horizontal section and a pair of vertical sections extending vertically from the respective ends of the horizonal section. One of the vertical sections is provided with a projection which is received in one of the inner guide grooves and the other vertical section is provided with a threaded hole in which a bolt extends and has its tip end received in the other inner guide groove.

Abstract: A conveyor ball unit comprises a conveyor ball resting on mounting balls in a mounting shell. A retaining ring is provided to hold the conveyor ball on the mounting balls in the mounting shell. The mounting shell can be set into an opening in a supporting structure and rests on the supporting structure by way of a shell rim. The unit is fixed in place by resilient first locking elements comprising in a first embodiment of the invention resiliently deformable projections which also define radial recesses in the interior of the mounting shell into which recesses projections formed on the retaining ring can be inserted in order to fix the ring within the mounting shell.

Abstract: In combination, a guide post, a coaxial ball bearing cage adjustably receiving the guide post and adapted for longitudinal and rotary movements. A coaxial guide sleeve upon a support adjustably receives the cage and post. An apertured cap or ring upon the sleeve loosely receives and rotatably supports the cage. An inlet on the cap is adapted for connection to a pressurized air source. Pressurized air is directed into the cap for angular impingement upon the cage for rotating the cage relative to the sleeve.

Abstract: A system for dispensing liquid food products is disclosed. The product is drawn from a source to a metering chamber through a supply valve, and then conducted to a dispensing valve to fill performed containers. The valves have a valve stem that reciprocates to open and close the valve. The valve stem is supported in the passage through which the product flows by bearings. The bearings have balls that engage the stem and the wall of the passage. The use of balls to support the stem facilitates cleaning of the passage after use, and yet provides good support for the valve stem.

Abstract: Two shafts (20) of a linear motion guide unit (10) are clamped together on a support (12) with positive line locking by bolts (24) engaging tapped pocket holes (22) inclined an acute angle (.alpha. ) relative to each other, one screw-hole (42) in the support (12) being inclined relative to a neighboring hole or to a mirror-symmetrical pair of counter-holes (44). Rail bodies (14) of aluminium integral with flat bars (30) include a fillet (26) with an adjacent crest (16) and a recessed step (28). Abutting shaft ends (47) may be clamped, by bolting at a counter-hole pair (44), to a through-shaft fixed at a central hole (42) on a single support (12 or 31). A continuous rail body having spaced groups of screw holes (40, 41) may be part of a box-like hollow section (64). In a three-cavity profile (70), two outer hollow sections (64) join a center cavity (71).

Abstract: A guide post has a ball bearing cage adjustably mounted thereon. An annular stop within the cage registers with an annular snap ring secured around a portion of the guide post limiting relative longitudinal movements of the cage and post, with the cage free for rotary adjustments relative to the guide post. A guide sleeve axially receives the guide post and sleeve with the cage rotatable relative to the guide post and sleeve when the cage and sleeve are separated. The guide post and sleeve are projected into and secured to the relatively movable die shoes of a die set assembly.

Abstract: A finite stroke type linear motion rolling contact guide unit includes a rail, a table, a plurality of rolling members interposed between the rail and the table, a retainer means for retaining the rolling members in position, an upper outer shell block having a bottom recess at its bottom surface for receiving therein the table as fixedly attached thereto and a lower outer shell block having a top recess at its top surface for receiving therein the rail as fixedly attached thereto. The blocks are provided with mounting holes for attachment to desired objects and preferably with a stopper mechanism.

Abstract: A retainer for use in a linear motion rolling contact guide unit including a rail, a slider and a plurality of rolling members interposed between the rail and the slider is provided. The retainer is generally comprised of an elongated rectangular plate having a predetermined thickness and width. The retainer plate is formed with a plurality of pockets for receiving therein rolling members so as to keep the rolling members in position. In accordance with the present invention, the pockets have a first size in the transverse direction slightly larger than the characteristic size, e.g., diameter in the case of balls, of rolling members and a second size in the longitudinal direction substantially larger than the first size so that the pockets are generally in the shape of a slot with either a circular pocket provided in a central portion of the plate or the second size being large enough to accommodate two balls with a separator therebetween.

Abstract: An electromagnetically-driven punch press having adjustable anti-skid supports for the ball bearings and ball cages of the ball-bearing bushings which carry the movable tool for preventing downward skidding of these balls and their cages when the moving tool punches down against the work material. Adjustable resilient cushioning arrests tool travel for minimizing "tool whip" and tool wear at the end of the work stroke.

Abstract: A multi-slider single rail linear motion rolling contact guide unit is provided. The guide unit includes an elongated rail provided with a first pair of guide grooves and a second pair of guide grooves. A first slider is provided with a first pair of endless circulating paths filled with a plurality of rolling members engageable with the first pair of guide grooves, and, similarly, a second slider is provided with a second pair of endless circulating paths filled with a plurality of rolling members engageable with the second pair of guide grooves. Thus, the first and second sliders are slidably mounted on the rail independently from each other.

Abstract: A linear bearing is constructed of a shaft having a cylindrical outer wall, an outer race having a cylindrical inner peripheral wall, a cylindrical retainer inserted for axial displacement within a toroidal space between the outer wall and the inner wall, and plural balls retained for rotation in the retainer and in contact with the outer wall and the inner wall. The balls are provided more densely at axially opposite end portions of the retainer.

Abstract: A linear motion rolling contact guide unit generally includes a rail, a slider and a plurality of rolling members interposed between the rail and the slider. The rail is elongated in shape and generally U-shaped in cross section. The rail is provided with at least one slot for releasing a stress which may be produced when the rail is subjected to heat treatment during its manufacture.

Abstract: A conveyor ball unit comprises a conveyor ball resting on mounting balls in a mounting shell. A retaining ring is provided to hold the conveyor ball on the mounting balls in the mounting shell. The mounting shell can be set into an opening in a supporting structure and rests on the supporting structure by way of a shell rim. The unit is fixed in place by resilient first locking elements comprising in a first embodiment of the invention resiliently deformable projections which also define radial recesses in the interior of the mounting shell into which recesses projections formed on the retaining ring can be inserted in order to fix the ring within the mounting shell.

Abstract: A linear motion guide unit of the finite type includes a rail, a slider, a plurality of rolling members interposed between the rail and the slider, and a retainer for retaining the rolling members in position. The slider is provided with a slider end plate at each end, which includes a first projection extending substantially across the gap between the rail and the slider. The rail is also provided with a rail end plate at each end, and the rail end plate is also provided with a second projection extending substantially across the rail to slider gap at a location so as not to come into engagement with the first projection. Thus, these first and second projections can serve as effective stopper for the retainer.

Abstract: A linear motion guide unit of the finite type includes an elongated rail, a slider, a plurality of rolling members interposed between the rail and the slider, and a retainer for retaining the rolling members in position. The rail is provided with a plurality of mounting holes, at least one of which is located at a central portion of the rail. The slider is provided with at least one access hole which may be brought into alignment with a corresponding one of the mounting holes so that a bolt or any other tightening member can be inserted into the mounting hole through the access hole.

Abstract: A linear motion guide unit includes a U-shaped bed, a U-shaped table turned upside down, a plurality of rolling members in a guide channel defined between the bed and the table, a retainer for retaining the rolling members in position, a pin provided at each end of the retainer and a belt provided at each end of the unit with its one end fixedly attached to the bed, its other end fixedly attached to the table and its intermediate portion passed around the pin. Thus, the retainer is moved only in synchronism with the table or bed and over a half of the distance travelled by the table or bed.

Abstract: A linear bearing slide assembly comprises an outer member, an inner member, a pair of linear bearing mechanisms, a preloading bar and a longitudinal spring. The outer member has a primary channel opening for accepting the inner member, and two secondary channel openings for accepting the linear bearing mechanisms and a preloading assembly. The inner member is located in the primary channel opening of the outer member. The first and second linear bearing mechanisms are located in the secondary channels on opposite sides of the primary channel opening. These linear bearing mechanisms support and guide the inner member as it travels along the primary channel opening in the outer member. Each of the linear bearing mechanisms can be conventionally constructed with either sliding or a plurality of rolling elements between two bearing ways.

Abstract: A linear motion rolling contact guide unit is provided. The present guide unit includes a rail, a slider and a plurality of balls interposed between the rail and the slider. The rail is formed with an inner guide groove and the slider is formed with an outer guide groove located opposite to and in parallel with the associated inner guide groove to thereby define a guide channel in which the balls are interposed between the rail and the slider. The inner and outer guide grooves are defined such that a first distance between two contact points between the ball and the inner guide groove when brought into contact therewith is longer than a second distance between two contact points between the ball and the outer guide groove when brought into contact therewith.

Abstract: A linear bearing assembly comprising sets of guides (ways) for guiding rolling elements (ball bearings or rollers) constrained within a cage. Typically, two sets of rolling elements and cages are used between a moving part and a stationary part. Each set has four resilient elements (springs) with one end of each spring anchored to the cage and with the other ends of two springs anchored to the stationary way or part and the other ends of the other two springs are anchored to the movable way or part. This arrangement provides a restoring spring force that gradually forces the cage to its correct tracking position. If the cage is tracking properly, the spring forces cancel out and there is no inherent rubbing in the restoring mechanism.

Abstract: In combination, a guide post having a longitudinal slot and a ball bearing cage having a bore adjustably receiving the post and adapted for relative longitudinal and rotary movements, there being an internal annular open top recess in said cage inwardly of one end terminating in an annular flange defining a stop shoulder. An apertured swivel cap is mounted upon the guide post and includes a shank extending into the cage recess. An annular detent on the shank is interlocked with the stop shoulder. A guide pin is threaded through the cap and into the guide post slot and is loosely and slidably registerable with side walls of the slot. The pin traps the cap upon the guide post for longitudinal movements. The cooperating stop shoulder and detent retains the cage upon the cap but for free relative rotary movements.

Abstract: A ball guide (1) has a cage (6)which is produced by coiling a strip (8). The strip (8) is pre-manufactured and includes apertures (9) to retain balls (7), for the guidance of exterior component (2) and shaft (4) relative to each other. The side edges (15) and (16) of the strip (8) are discontinuously joined with each other by spot welds. The cage (6) can additionally be equipped with a backup ring (17). The backup ring (17) is supported by the face area (18) of the cage (6). The backup ring support surface (21) serves as a contact surface for a compression spring (19). The other end of the spring is supported by the support surface (20) of a shoulder ring (22) to return the cage (6) to a center or home position. Through the use of a strip (8), the cages (6) may be produced in different diameters and lengths through a simple process.

Abstract: A ball spline bearing assembly includes a spline shaft having a peripheral surface formed with a spline groove, an outer sleeve fitted onto the spline shaft with a predetermined gap therebetween and a plurality of balls interposed between the spline shaft and the outer sleeve. A ball holder is provided in a radial hole formed in the outer sleeve and a ball is rotatably held in position and in engagement with the spline groove by the ball holder. A fluid line is formed in the outer sleeve and the ball holder so that a pressurized fluid may be supplied to establish a fluidic cushion between the ball holder and the ball. Also provided is a plurality of solid lubricants which are normaly pressed against the spiral groove to keep the groove lubricated at all times.

Abstract: In a gearshift device of a multiple-gear transmission of a motor vehicle in which gear shift gates are selected by the rotation of a central selector shaft (2) and gear steps are engaged by the subsequent axial movement thereof. The selector shaft (2) is non-rotatably and axially movable via roller bodies in a hub (4) of a lever-type selector rocker (3). Several rows of balls (12) extending axially, which with a part of their surface positively engage in guide grooves (10 and 11) both of the hub (4) and of the selector shaft (2), are arranged in a cage (13) situated between hub (4) and selector shaft (2) to prevent backlash between the hub (4) and the selector shaft (2) in a peripheral direction in a radial direction.

Abstract: In combination, a guide post, a coaxial ball bearing cage adjustably receiving the guide post and adapted for longitudinal and rotary movements. A coaxial guide sleeve adjustably receives the cage and post. An apertured cap loosely received the cage and is mounted and retained upon the guide sleeve, and has an inlet adapted for connection to a pressurized air source. Pressurized air is directed from the source into the cap for impingement upon the cage for rotating the cage relative to the sleeve.

Abstract: A linear motion guide unit including a bed, a sliding table and a plurality of rolling members interposed between the bed and the sliding table to provide a relative sliding motion therebetween. The bed has an outwardly extending mounting wall section and it is mounted on a housing having an associated recess or hole. Thus, when the linear motion guide unit is mounted in position, it is located in the associated recess or hole so that the overall exposed height of the present linear motion guide unit can be made extremely small, thereby allowing to be used in moving parts of various devices, such as floppy disc and hard disc drives.

Abstract: A rolling bearing in which a bearing ring and/or a rolling element comprises an alloy steel wherein the hardness of a surface layer over a thickness corresponding to greater than 2% of a mean diameter of a rolling element is equal to or greater than 60 HRC and the hardness at least of the raceway surface or the rolling contact surface is equal to or greater than 64 and equal to or less than 69 HRC, and carbides of equal to or greater than 6 .mu.m converted as the diameter of a circle are not contained in a range from the raceway surface of the rolling contact surface as far as the depth corresponding to 2% of the mean diameter of the rolling element.

Abstract: Apparatus for force restoration of a bearing retainer uses a loop of resilient line around a pulley at an end of the bearing retainer. One end of the loop attached to a slide and the other end is attached to a base of a positioning table. A second loop is similarly attached at the opposite end of the retainer. These loops apply equal tension to both ends of the bearing retainer as long as the bearing retainer remains in its proper position without creep. When the bearing retainer moves out of position, unequal forces are exerted by the two loops, with a resultant force in a direction necessary to return the bearing retainer to its proper position. This controls the position of the bearing retainer relative to the slide. Provision for detecting and controlling broken force restoration lines may be included. In a second embodiment, a positioning table is disposed in a non-level position wherein gravity tends to produce bearing creep in a downward direction.

Abstract: The sliding member of a ball slide is supported for linear travel on a base member by two linear sets of ball bearings. In a typical embodiment each set of ball bearings has rolling engagement adjacent diametral opposite sides thereof with two pairs of spaced, parallel bearing rods that are housed, respectively, in longtitudinal grooves formed in confronting sides of the sliding member and base member, respectively. The spaces separating the two bearing rods of each pair thereof on the sliding member are equal to each other but greater than the spaces separating each pair of bearing rods on the base member, whereby for each revolution of a ball bearing the ball bearing will travel on the slide member at a rate lower than the rate of which the ball bearing will travel on the base member.

Abstract: Ball units for conveyor systems are known in which a load-bearing ball is seated in an essentially radially symmetric bearing unit having ball bearings in a bearing shell. The load-bearing ball is held in the bearing unit by a securing apparatus. The bearing unit has a supporting structure that enables the bearing unit to be fixed in an opening of a carrier plate in such a way that it can support a load. Detents are provided to lock the unit in the opening against the load direction. It is suggested that the bearing shell should be constructed integrally with the supporting structure as a semielastic formed element.

Abstract: In combination, a guide post having a longitudinal slot and a ball bearing cage adjustably receiving the post and adapted for relative longitudinal and rotary movements, there being an internal annular open top recess in the cage inwardly of one end. A truncated roller bearing with opposed hemispherical surfaces and opposed flat sides is guidably positioned within the slot with the roller bearing maintaining a rolling point contact with the bottom wall of the slot and with the roller flat sides loosely and slidably registerable with the side walls of the slot. A hemispherical surface of the roller bearing being positioned and retained within an internal annular recess within the ball cage. An end cap with a shank is threaded into the cage, with the shank terminating in an annular open bottom recess cooperatively receiving said roller bearing from trapping the roller bearing in the cage.

Abstract: A linear motion guide unit having a rack and pinion mechanism for preventing slippage in relative sliding motion is provided. The linear motion guide unit includes a table elongated in shape and having a generally U-shaped cross section and a bed elongated in shape and having a generally U-shaped cross section which is oriented with its inner surface facing the inner surface of the table. The unit also includes a plurality of balls sandwiched between the table and the bed so as to provide a rolling contact therebetween. Also provided is a retainer having a horizontal section and a pair of vertical sections extending from the opposite sides of the horizontal section and formed with a plurality of windows for receiving therein the balls. The horizontal section of the retainer is formed with a slot and a pinion gear is rotatably supported on the retainer as extending partly through the slot and at the center in the widthwise direction of the retainer.

Abstract: A rolling body with guide channel, in which a rolling element cage with rolling elements is arranged in the rolling body and the guide channel has rail members for the rolling of the rolling elements, is characterized in that the rolling body has a rolling element cage, in which in recesses are provided at least one preferably triplet of three rolling elements, in such a way that the centers of the rolling elements have the same reciprocal spacings and that in the guide channel for each rolling element of the triplet is provided a guide rail, the guide rails being so reciprocally positioned and spaced, that with the rolling body inserted therein the rolling elements of the triplet are in reciprocal contact and each is in contact with rail member. In the case of a purely suspended operation, a pair of two rolling element can be used in place of a triplet. However this is a special case for an operating form in which only tensile loads occur at right angles to the guide channel.

Abstract: An earthquake bearing with a spherical ball (26) located between two elastomer layers (18,19) in the shape of half-shells. The elastomer layers each include a cylindrical elastomeric pad. The earthquake bearing further includes a spherical clearance (25) facing the ball (26), with bearing housings or halves (11,12) being mutually braced by elastomer bearings (24) in order to achieve compliant, progressive damping. This system is capable of gently moving out of the way both vertically and horizontally. The bearing halves (11,12) are prestressed by tension bars (23) which pass centrally through the bearings (24). The elastomer bearings (24) include of a plurality of columns defined by panes of elastomers and panes of steel. Outwardly directed head bolts (15) are held on the base plates (13,14) of the bearing housings (11,12) and are anchored into the adjoining components.

Abstract: A guide rail of a linear guide apparatus is formed of a rail main body and a pair of rail members. The rail main body has a U-shaped cross section and recessed grooves respectively formed in inner surfaces of opposed side walls so that the recessed grooves extend axially and oppose each other. The pair of rail members, each having a ball rolling groove formed in an inner surface, are integrally fitted into the recessed grooves of the rail main body. The rail members are made of a material having a high hardness, and the rail main body is made of a material having a hardness lower than the rail members.

Abstract: In combination, a guide post having a longitudinal slot and a ball bearing cage adjustably receiving the post and adapted for relative longitudinal and rotary movements, there being an internal annular recess in said cage inwarly of one end. A truncated roller bearing with opposed hemispherical surfaces and opposed flat sides is guidably positioned within the slot with the roller bearing maintaining a rolling point contact with the bottom wall of the slot and with the roller flat sides loosely and slidably registerable with the side walls of the slot. One of the hemispherical surfaces of the bearing being positioned and retained within an internal annular recess within the ball cage. There being a transverse arcuate slot through the cage in registry with its annular recess and an arcuate pull plug nested and retained within the slot and having an internal arcuate recess forming a continuation of the cage recess. A set screw in the cage retainingly engages the pull plug.

Abstract: In combination, a guide post having a longitudinal slot and a ball bearing cage adjustably receiving the post and adapted for relative longitudinal and rotary movements, there being an internal annular recess in said cage inwardly of one end. A truncated roller bearing with opposed hemispherical surfaces and opposed flat sides is guidably positioned within the slot with the roller bearing maintaining a rolling point contact with the bottom wall of the slot and with the roller flat sides loosely and slidably registerable with the side walls of the slot. One of the hemispherical surfaces of the bearing being positioned and retained within an internal annular recess within the ball cage. A fastener within the profile of the guide post adjacent one end of the longitudinal slot traps the roller within the longitudinal slot and ball cage.

Abstract: A rolling bearing has races and a rolling element. At least one of the races and the rolling element is made of a carburized or carbonitrided alloy steel. The content of a fine carbide present in the surface layer of the one element of the rolling bearing is 20-50 vol %. The content of retained austenite in the surface layer is 10-25 vol %. The rolling bearing provides a long-life rolling bearing suitable for use in a transmission and engine.

Abstract: A unique ball-bearing retainer is disclosed for use with two or three part drawer slides for filing cabinets and the like. The retainer uses a standard channel member with upturned side flanges. The flanges are equipped with round apertures and then bent at the approximate mid-point thereby creating an elliptical aperture providing a seat for rotation of a common steel ball. The ball comes in contact with the aperture at the base and the top of the same such that during operation of the drawer slide the portions of the ball having maximum rotation or movement do not contact the retainer thereby reducing friction, and increasing the life of the drawer slide.

Abstract: A linear ball bush, wherein at least one straight ball row of a ball circuit bears radially outwardly against a running plate, which is inserted in an associated aperture of a cage and possesses an outer face for bearing against an inner circumferential surface of a bearing housing bore seating the cage, is filled in the manner that the balls, with the running plate tilted at one end out of the aperture, are introduced via a filling slope at the open end of the aperture and/or a filling chamfer at the outwardly tilted end of the running plate into a straight portion of a track, and that after the balls of the ball circuit have been completed, the running plate is tilted back into an operating position and is secured in the operating position.

Abstract: There is provided a thin finite linear motion rolling guide unit having an apparatus for preventing a positional deviation of a holder. The guide unit comprises a U-shaped bed member, an inverse U-shaped table member, and a M-shaped holder sandwiched between the bed member and the table member. Holding holes are formed horizontally in a line at regular intervals in a pair of outside opposite walls so as to rotatably hold the balls between the opposite track grooves formed on the bed member and the table member. Circular holes are formed in the central portions in the lognitudinal direction of the inside opposite walls of the holder. A pin is pressure inserted and fixed into the holes. A single type inside belt and a double-single type outside belt are wrapped to the central portion of the pin by a half rotation in the opposite directions so that the outside belt comes into contact with outer edges of the inside belt.

Abstract: A ball catch for releasably retaining a grooved shaft comprises a hollow bushing, a guide part mounted in the bushing for axial movement, rolling elements disposed between opposing surfaces of the bushing and guide part to facilitate movement of the guide part, and a hemispherical socket seated on the front end of the guide part. A locking ball is disposed in the socket and is seated on a plurality of small bearing balls to facilitate rotation of the locking ball. A spring biases the guide part forwardly. The socket and guide part are formed of deep-drawn sheet parts and are fixedly joined together. The guide part is configured to impart radially outward elastic biasing forces to the rolling elements to eliminate any radial play of those elements between the bushing and guide part.

Abstract: The present invention provides a finite linear motion rolling guide unit comprising: a track member; and a link mechanism for holding ball rolling members which is arranged between vertically depending track portions of a sliding member which rides over the track member through the ball rolling members so as to be finitely linearly slidable. The link mechanism is simply constructed by two or more link arm members. In the relative reciprocating motion at any speed of the track member and the sliding member, a deviation movement thereof from the normal position of the ball linear moving members is prevented and, at the same time, the smooth and stable linear motion rolling guiding operation of the balls is assured.

Abstract: A bearing apparatus comprises: a plurality of bearing units, each of the bearing units holding balls so as to have the balls freely rotate and the balls being arranged so as to have a predetermined distance in a relatively positional relation; and a plate for linking the plurality of bearing units on a plane to have the bearing units kept constant in a distance in a relatively positional relation. The bearing units are placed in holes drilled in the linking plate, and are connected to the linking plate slightly loose by a joint mechanism so as for the connection to be flexible during movement of the apparatus. The apparatus can be of 4 to 20 mm in height.

Abstract: The invention proposes a linear guidance unit in which a guide rail is mounted at the bottom of a U-shaped guide housing, a traveller being guided by means of endless ball races to move on this guide rail.

Abstract: A thin-walled rectilinear motion rolling guide unit comprising a bed member, a table member slidably movable relative to said bed member in the longitudinal direction, and a ball retainer interposed between said two members.According to the present invention, a rack and pinion mechanism is provided between said table member and ball retainer, with the use of a different teeth-meshing ratio between the table member and the ball retainer such that the speed in rectilinear motion of the former is greater than that of the latter such as a value of 2:1 for example, so that by decreasing the relative velocity of the ball retainer with the table member, the displacement of the former with the latter in operation can be prevented under any stress applied vertically onto the unit, insuring a high precision operation with less sliding resistance.

Abstract: A slide bearing support having one member slidable on another member and including a pair of parallel slide bearing assemblies disposed between the members.

Abstract: The invention relates to a power transmission of a turning-track track-laying vehicle. The track-laying vehicle comprises such a closed-loop type track belt (10) arranged between end rolls or similar (11, 12) in such a way that one edge of the track belt can be stretched and the other edge of the track belt contracted in order to make the vehicle execute a turn. The vehicle comprises a motor (26), a traction sprocket or sprockets (30), and power transmission equipment between the traction sprocket or sprockets (30) and the motor (26). The drive sprocket or sprockets (30) are positioned above the top run of the track belt (10), preferably sideways in its middle range. In the traction sprocket or sprockets (30) there are drive cogs (32) or similar, which drive cogs (32) are in driving contact with the openings (40), grooves or similar of the track belt, so that the traction force can be transmitted from the traction sprocket or sprockets (30) to the track belt (10).

Abstract: In combination, a guide post having a longitudinal slot and a ball bearing cage adjustably receiving the post and adapted for relative longitudinal and rotary movements, there being an internal annular open top recess in the cage inwardly of one end. A truncated roller bearing with opposed hemispherical surfaces and opposed flat sides in guidably positioned within the slot with the roller bearing maintaining a rolling point contact with the bottom wall of the slot and with the roller flat sides loosely and slidably registerable with the side walls of the slot. A hemispherical surface of the roller bearing being positioned and retained within an internal annular recess within the ball cage. An end cap with a shank is threaded into the cage, with the shank terminating in an annular open bottom recess cooperatively receiving said roller bearing from trapping the roller bearing in the cage.