Abstract: A four-row tapered roller bearing for working rolls of roll stands includes a plurality of axially arranged inner ring parts forming an inner ring, a plurality of axially arranged outer ring parts forming an outer ring, and four annular rows of tapered rolls positioned between the inner and outer ring parts. Each inner ring part has an inner extension with the inner extensions possessing end faces that are directly positioned against one another along a partition groove. The end face of at least one of the inner extensions is provided with a plurality of spaced apart and radially extending grooves in which is received lubricant to lubricate said end faces of the inner extensions. An annular sealing ring encircles the outer surfaces of the inner extensions of the inner ring parts and have a pair of inwardly directed ribs which engage the outer surface of the inner extensions to form between the ribs and the outer surfaces of the inner extensions a closed chamber which bridges the partition groove.

Abstract: A roller bearing with symmetric barrel shaped rollers comprising an inner race (13), an outer race (14) and rollers (11), each of which rollers have at least one rounded end, and being of the bearing type where rollers and race tracks have longitudinal section profiles with substantially the same radius of curvature, whereby the rollers during normal operating conditions are axially moveable between the race tracks without hindrance from axial confinements at the race tracks for allowing relative misalignment and axial displaceability of the race tracks, wherein the end drop zone has a length (d1) which is lower than 5% of the length (1a) of the roller, and which commences where the bend of the curvature of the roller in axial direction exceeds the normal curvature of the roller by 0.1°, and where the end drop of the roller is otherwise determined by the following relations, r/1a≧0.35 for &ggr; values up to 0.7°, and r/1a is ≧0.2 for &ggr; values between 0.7° and 1.4°.

Abstract: Rolling bearing comprising a stationary race 1, a rotating race 4, at least one row of rolling elements 3 placed between the stationary race 1 and the rotating race 4, an encoder 11 which is concentric with and is secured to the rotating race 4, and a sensor 14. A support 16 secures the sensor to the stationary race 1. The sensor faces and is a small gap 15 away from the encoder 11, the rotational travel of which is detected by the sensor 14. The sensor 14 bears directly on a reference surface 9b of the stationary race 1.

Abstract: A cage-guided seal is provided with an annular support body, formed preferably from sheet metal, and punched-out retention sections that are adapted to engage the side ring of a standard commercial cage. The peripheral edges of the support body extend close to the sealing surfaces of the inner and outer bearing races and are provided with sealing lips of vulcanized elastomers that engage the inner and outer bearing races.

Abstract: A roller bearing includes radially inner and outer bearing rings and rollers disposed radially therebetween. The rollers are retained by at least one plastic guide rim that is snapped into place in one of the bearing rings. An end of the guide rim which faces the rollers is provided with a metallic butting face to resist frictional wear.

Abstract: A configuration that promotes cleaner fracture by reducing or eliminating secondary fractures includes a plurality of distinct interconnecting regions defining a plurality of separate fracture regions that are separated by an interruption.

Abstract: A process for producing a sheet metal cage for roller bearings involves using a press roll to form a disk-shaped circular sheet metal blank into a tubular element having radially inwardly projecting and axially extending ribs, and stamping window-shaped pockets into the tubular element between adjoining ribs to produce a cage of a rolling bearing for receiving rolls in the window-shaped cutouts. The sheet metal cage produced by the method possesses a conically rolled outer surface and side rings arranged at opposite ends. The cage includes ridges extending between the side rings and window-shaped pockets between adjacent pairs of ridges for receiving tapered rolls. The cage also includes ribs extending inwardly from each of the ridges, with the ribs possessing tapering side surfaces.

Abstract: A driving and supporting device for a transporting roller for textile fibers formed as a drawing roller in an open end spinning machine, the device has an electric motor for driving a transporting roller and having a drive shaft, a device part which is completely mechanically uncoupled from the drive shaft of the motor and supports the transporting roller in an axial and a radial direction.

Abstract: A support assembly comprising an elongated shaft, a bearing assembly at opposite terminal ends of said shaft paralleled in a pillow block, support means for each of said pillow blocks and means mounting one of said bearing assemblies for adjustable axial movement relative to said pillow block thereby to compensate for any changes in the support structure in an axial direction and a method for supporting a load bearing member on spaced support structures comprising the steps of mounting the lower half of a pillow block on each of the spaced support structures, positioning a shaft having bearings journaled at opposite ends so that the bearings engage in the lower half of the pillow block, assembling the cap section of each pillow block, fixing the bearing in one of the pillow blocks against displacement in an axial directions relative to the pillow block, and displacing the bearing in the other pillow block axially to position it generally centrally in the pillow block with a predetermined clearance between the

Abstract: A device for locking and unlocking two mechanical members (2, 3) coupled for rotation as a unit (1) by means of a splined coupling (30, 33), comprises an elastic means (36) secured to the first member (2) and adapted for co-operation with the second member (3). The elastic means (36) is comprised of a bistable elastic element (36) having first (50) and second (52) alternative steady positions. The bistable elastic element is provided with hooking means (46, 48) adapted for co-operating in the first steady position (50) with the second member (3) to keep the members (2, 3) axially coupled, and for disengaging in the second steady (52) from the second member (3) to allow separation of the members (2, 3) forming the coupled unit (1).

Abstract: A method for heat-treating a component of steel or cast iron, particularly a through hardening bearing steel component, involves heating the component to the austenitization temperature and holding the component at the austenitization temperature to achieve austenitization, rapidly quenching the component to approximately the martensite starting point (MS temperature) and holding the component at the bainite transformation temperature until partial bainite transformation occurs. After partial bainite transformation, the component is cooled down to and briefly held at room temperature, followed by short-cycle tempering.

Abstract: A vibration coupling stud for use in a vibration monitoring system includes digital memory and temperature sensing devices. Data is transferred between the vibration coupling stud and a vibration monitor. Data stored in the stud may include measuring point identification, prior measurement data, machine or bearing part numbers, and alarm limits.

Abstract: A method and system for monitoring the operational condition of a machine is disclosed.

Abstract: The invention concerns a cage device (17) for maintaining balls in a ball bearing comprising at least a row of balls arranged between two raceways, said cage comprising a ring-shaped part (18) axially adjacent to said balls and a plurality of slots (22) in each of which is arranged a ball, a slot being formed by a concave surface, the slots being open on the side opposite the ring and separated by spacing portions (19) extended opposite the ring by lips (21). The concave surface comprises a truncated portion (24) connected to the spherical portion (23).

Abstract: A solid cage for roller bearings, where the pitch circle of the rollers is between the radial center of the cage and its bore, with guide surfaces on the webs which conform to the lateral surface of the rollers, thus forming retaining edges in the area of the bore, across which the rollers are snapped into the pockets, characterized in that the guide surface 4 is interrupted by at least one strip 10, which curves to form an arc facing the roller 3, this strip being recessed into the guide surface 4 in the radially outward area of the cage, but projecting beyond the guide surface 4 in the radially inward area to serve as an additional retaining projection 12 for the roller3.

Abstract: A method for forming a clamping device comprising of a swiveling body made of plastic, a plain bearing bushing mounted radially inside the plastic swiveling body, a rolling bearing for mounting a clamping roll arranged eccentrically to the bearing bushing, the edges of the plain bearing bushing being wound out of a strip, and joined to each other under intrinsic tension in the area of the butt joint; and, wherein, the lateral surface of the plain bearing bushing and the bore surface of the rolling bearing function as parts of a mold for the injection-molding of the swiveling body and consisting of the steps of placing the rolling bearing assembly and a plain bearing bushing in a mold half in eccentric relation to one another, placing a second mold half over the plain bearing bushing and rolling bearing configured to form ring-shaped projections to hold rolling bearing in a predetermined axial position relating to the bearing bushing, and injecting a plastic material with the mold closed to form the swivel bod

Abstract: An arrangement for limiting the whirl speed of a shaft after failure of a magnetic bearing supporting the shaft. The arrangement includes a surface extending essentially radially from the shaft axis and a machine element is provided with a projecting element extending from the machine element in a direction towards the surface. The surface is provided with a circular element that is concentric with the axis of the shaft. The arrangement also includes a disk-like element provided with an outer perimeter surface, a hole and an inner perimeter surface. One of the perimeter surfaces is designed so that it provides a varying distance along the circumferential direction with respect to the rotational center of the disk-like element. The element is arranged between the shaft and the circular element. The circular element and the projecting element are positioned in a common plane perpendicular to the shaft so that the circular element and the projecting element overlap one another.

Abstract: Freewheel device 1 of the type comprising an outer ring 2 having an inner sliding path 3 , an inner ring 4 or a shaft having an outer sliding path 5, a freewheel 6 disposed between the sliding path of the outer ring and the sliding path of the inner ring and comprising a plurality of cams 7 disposed in windows 9 in a cylindrical part 8a of at least one cage 8 and assuring unidirectional coupling between the outer and inner rings, and at least one bearing member 11 disposed radially between the outer and inner rings for maintaining said outer and inner rings concentric, said bearing member having a radial part 11a provided with at least two holes for circulation of lubricant. At least one hole is near the outer ring.

Abstract: A stud comprises a head and a stem with a threaded end length and a length having an axial knurling proximate to the head and adapted to be driven with radial interference into an axial bore of a radial flange portion fast for rotation with the hub of a motor vehicle wheel. The stud comprises at least one knurled surface having an area other than zero in a projection on a plane perpendicular to the longitudinal axis of the stud. The knurled surface is adapted to co-operate with the radial flange portion for preventing rotation of the stud.

Abstract: A roller contact bearing unit, in particular for the hub of a vehicle wheel, including a radially outer rotating race (10), a radially inner stationary race (11), a sealing device (16) between the races (10, 11) and a device for measuring the rotation speed of the outer race (10). The measuring device includes an encoder wheel (13) in the form of a radially oriented annular disc made of plastic or rubber magnetized material, and an annular insert made of non-magnetic metal (14) which is suitably shaped to form: a constraining means (14a) for fixing the insert (14) onto the outer race of the bearing unit, an axial abutting means (14b) suitable for abutting against a lateral surface (10b) of the outer race (10), an annular seat (14c) for housing and externally enclosing the encoder wheel (13), and a support means (14d) for a rubber element (15) which forms a sealing covering (15b) suitable for sliding against a surface (16) which forms part of a non-rotating element (11) of the bearing unit.