摘要:
A rolling bearing for longitudinal movement has a cage with its inner surface surrounding a shaft. The cage has axially extending races for loaded balls and axially extending return races for unloaded balls, as well as a cover on each of its two ends. Each cover has turn around races connected between the ends of a race and a return race. The races, return races and turn around races have slits extending along the races and open to the shaft. Each turn around race in the covers is bounded by a curved shoulder section on the inner surface of the cage and extending along the turn around race, and a curved inner wall section of the cover extending parallel to the curved shoulder wall section of the cage.
摘要:
A ball bearing for longitudinal movement on a shaft or the like, comprising a cage which at least partially surrounds the shaft and is installed in the bore of a housing, ball guides consisting of axial guide tracks for the loaded and unloaded balls arranged next to each other around the periphery with semi-circular deflector tracks joining pairs of these guide tracks, endless rows of balls guided in the guide tracks, and at least one raceway element supported in the bore of the housing carrying the loaded balls of one or more guide tracks on its radially inwardly directed raceway, a longitudinal fillet projecting radially from the inside and toward the outside approximately as far as the height of the centers of the balls between two guide tracks of each ball guide and formed on the cage in such a way that the radius of curvature of each ball guide passing through the centers of the balls of the deflector tracks is equal to or slightly larger than half the diameter of the balls.
摘要:
A fluid bearing system for journalling a rotatable shaft in which an annular housing is fixed about the shaft and is provided with an inlet for the supply of fluid under pressure. At least one bearing compression chamber is formed in the housing and/or the shaft and is distributed about the periphery of the shaft. The housing and the shaft form an integrated throttle control means in which a restrictor opening and a discharge opening is formed between the housing and the shaft for the flow through of fluid from the inlet. The openings are simultaneously varied relative to each other in an opposing manner as a function of the size and distribution of the load placed on the shaft.
摘要:
A fluid bearing system for journalling a rotatable shaft in which an annular housing is fixed about the shaft and is provided with an inlet for the supply of fluid under pressure. At least one bearing compression chamber is formed in the housing and/or the shaft and is distributed about the periphery of the shaft. The housing and the shaft form an integrated throttle control means in which a restrictor opening and a discharge opening is formed between the housing and the shaft for the flow through of fluid from the inlet. The openings are simultaneously varied relative to each other in an opposing manner as a function of the size and distribution of the load placed on the shaft.
摘要:
A rolling bearing for lengthwise movement on a shaft (6) has a cage assembled in the bore of a housing surrounding the shaft. The cage has at least one longitudinally extending guide slot extending radially therethrough and a rail supported in the bore of the housing and outwardly covering the guide slot. The rolling bodies, which are inserted in the guide slot of the cage, are arranged to run serially in rows between the longitudinally directed races of the rail and shaft.In order that the rolling body for lengthwise movement can withstand the greatest load forces in the angular deviation and bending of the shaft, the rail consists of at least two partial rails individually tiltably supported in the bore of the housing and arranged adjacent one another in the lengthwise direction.
摘要:
A bearing unit includes a housing provided with a cylindrical bore and a linear bearing positioned within the cylindrical bore. The linear bearing includes a cage in which are arranged a plurality of endless ball rows each defined by a longitudinally extending ball track for load-bearing balls, a longitudinally extending return track for non-load-bearing balls, and deflection tracks connecting ends of the longitudinally extending ball track and the longitudinally extending return track. Each longitudinally extending ball track opens radially outwardly with a track plate being arranged to cover the longitudinally extending ball track for the load-bearing balls. The cylindrical bore of the housing is provided with a plurality of recesses each located in an area of the cylindrical bore facing one axial end of one of the track plates to permit radial deflection of the one axial end of the track plate.
摘要:
Linear guide assembly comprising at least two guide rails, which are movable in the longitudinal direction with respect to each other having similarly shaped raceways, a plurality rolling elements, guided in a cage, at least one gear wheel connected to the cage for the positive guidance of the cage, which wheel engages in toothed racks or the like, each of which is connected to a guide rail, said gear wheel consisting of a disk, having an external circumference which is provided with uniformly distributed axial rolling elements, which project slightly beyond the disk, and wherein said recesses, correspond to the external shape of the rolling elements and into which the rolling elements can engage, are provided equal distances apart directly in the guide rails.
摘要:
A radial seal useful in linear ball bearings and designed to be secured during transportation as well as during operation of the bearing includes an arcuate disk portion having opposite sides. An arcuate projection is provided on each side of the disk portion, at least one of which is axially oriented. The projections are designed to have different diameters. This produces a stepped seating surface along the outside diameter of the radial seal that effects a reliable seating of the radial seal in the linear ball bearing. The radial seal can also be designed with two axially oriented projections disposed at different diameters on one side of the disk portion for projecting into an annular groove on the frontal face of the outer ring of the linear ball bearing. By constructing the projections with circumferential outer faces that slightly diverge in a cone-shaped manner, the projections further inhibit the seal from falling out of the groove.
摘要:
A ball bearing for permitting longitudinal movements with respect to a shaft includes a cage provided with at least two longitudinally extending guide tracks having opposite ends that are connected by semicircular turn around tracks. A plurality of balls are positioned in the guide tracks, with balls positioned in one of the guide tracks forming load-bearing balls and balls positioned in another one of the guide tracks forming non-load-bearing balls. The longitudinally extending guide track for the load-bearing balls is provided with a slit that is open radially inwardly for passage of the balls in a direction radially inwardly towards the shaft. The longitudinally extending guide track for the non-load-bearing balls has an interior wall which, in cross-section, possesses at least two substantially diametrically opposed first sections having a circular contour and at least two substantially diametrically opposed second sections laterally offset from the first sections and having a base that is set back from the circular contour.
摘要:
A ball bearing for lengthwise movement has a cage sleeve between a shaft and a housing. The cage sleeve has a plurality of circumferentially distributed channels in which a corresponding row of circulating balls is arranged. The balls loaded by the shaft travel in one linear raceway and return unloaded in another linear raceway, the ends of the linear raceways being connected by a pair of reversing raceways. A load-transmitting raceway rail is seated in each of a plurality of openings in the cage sleeve. Each raceway rail has a raceway groove formed by an inner shoulder and an outer shoulder which overlies the linear raceway for loaded balls, a surface portion which overlies the linear raceway for unloaded balls, and a pair of end surfaces which overlie the respective reversing raceways. These end surfaces are substantially parallel to a hypothetical half-circle defined by the path of a center point of a ball during travel in the corresponding reversing raceway and are substantially tangent to a hypothetical extension of the raceway groove such that smooth rolling of a circulating ball is enabled during transitions between the linear raceway for loaded balls and the reversing raceways.