Abstract: An eccentric bearing having three bearing races arranged one over another, of which one with the center ring forms an inner rolling bearing and the other with the center ring forms an outer rolling bearing, wherein the center ring in each instance consists of a bearing ring insert for of each of said two rolling bearings and a supporting ring of castable or injectable plastic between and positioning said bearing ring inserts.

Abstract: The rolling-contact bearing comprises one outer race 11, two inner races 12,13, two rows of rolling bodies 14 held in cages 15 and a built-in device for detecting the speed of rotation, of the type comprising a sensor means 17 and an encoder means 19 which are located in the annular chamber defined between the inner races 12, 13 and outer race 11 and the rolling bodies 14. The encoder means 19 comprises an active part 20 capable of creating in the sensor means 17 a periodic signal of frequency proportional to the rotational speed of the bearing 1. The encoder means 19 comprises a support part 21 secured to the inner races 12,13 and made of a nonmagnetic material, so that the said support part 21 axially holds the inner races 12,13 against each other before the bearing 1 is mounted in the mechanical assembly for which it is intended.According to the invention, the encoder axially secures the inner races after the bearing has been assembled and cannot come into contact with the rolling bodies.

Abstract: The invention relates to a method of manufacturing a seal for a roller bearing, for instance a ball bearing. The seal according to the invention is formed from a thermoplastic polymer-containing material which is subsequently cross-linked under the influence of radiation, for example .beta.-radiation. This allows the use of seals manufactured according to the invention at near or even above the melting point of the non-cross-linked thermoplastic polymer being employed. Due to the invention a large number of cheap polymeric materials have become suitable for the manufacture of seals, and due to the cross-linking the swelling caused by lubricants can be reduced considerably.

Abstract: A liquid seal unit having a seal ring with an annular end face cooperating with a seal mating ring on an associated component to form a liquid-tight dynamic seal. A composite multi-functional member with a flexible finger spring embedded in a unitary elastomeric body urges the seal ring and the mating ring together. The spring has an annular continuous outer body portion and a plurality of circumferentially spaced apart, radially inwardly extending flexible spring fingers. The unitary elastomeric body includes a radially outer mounting collar with a generally radially inwardly directed inner surface, a web portion extending radially inwardly from the outer collar and enclosing the flexible finger spring. The body also includes radially spaced, first and second annular load bearing formations that lie in axially opposite directions. The elastomeric body still further includes an axially extending sealing ring positioning collar engaging the seal ring to provide a secondary seal.

Abstract: A device for mounting rolling bearing assemblies of the type incorporating an outer race ring, an inner race ring and a plurality of rolling bodies provided between the rings, and where each ring in the assembled position is arranged to be nonmovably interconnected to an assembly element, involves one of the outer and inner race rings being equipped with an arrangement for fitting the race ring so that at least a portion of one of its side faces to a counter surface situated in a substantially radial plane. The race ring is securely attached to the corresponding assembly element or a detail firmly connected thereto.

Abstract: A bearing unit for a vehicle wheel, comprising a three-point or four-point bearing with an inner race and an outer race, each having a bearing groove containing a series of rolling bearings, which inner race is provided with elements for fixing the bearing to the vehicle suspension. A flange pointing radially outwards relative to the outer race is also provided, which outward-pointing flange interacts with and/or is connected to a flange pointing radially inwards relative to the outward-pointing flange.

Abstract: A roller bearing includes an inner raceway member having an inner raceway surface and an outer raceway member having an outer raceway surface. The inner and outer raceway surfaces are spaced apart from one another to define an annular space and a plurality of rolling elements are disposed in the annular space for engaging the inner and outer raceway surfaces as the rolling elements roll in a rolling direction. During operation of the roller bearing, friction forces arise at regions of the inner and outer raceway surfaces that give rise to positive skew moments. Those regions of the raceway surfaces are designed to have greater frictional characteristics than those regions of the inner and outer raceway surfaces where negative skew moment producing friction forces arise. In that way, the skew of the roller can be controlled to be not excessively negative.

Abstract: A device for an open-end spinning machine is disclosed having a drive and a bearing for a shaft-less spinning rotor that forms the rotor of an axial field motor. The device has a stator with a hollow, cylindrical core, a multiphase winding, and a combined magnetic/gas bearing. The bearing has gas outlet bores in an axial, plane-parallel bearing face providing for gas distribution symmetrically about the axis, and there are holding and centering magnets centered in the bearing face. The housings of the stator and the bearing are combined into a one-piece stator housing in which are formed the device for cooling, the gas distribution device, holders for spring and clamping elements of the stator housing suspension, and a support for a sensor plate. The housing also integrates a yoke plate of the bearing and connections for supply lines. A gas chamber therein is closed off on the open side by a gas bearing cover.

Abstract: A member for axially retaining a rolling-contact bearing (6) relative to a mechanical element (13) radially adjacent to the rolling-contact bearing consists of an open metallic ring (21) which can be elastically deformed radially, produced from a thin sheet of metal, and including a substantially cylindrical part (22), at least one end of which is equipped with a radial rim intended to interact both with a circular groove (14) formed in a housing (12) of the mechanical element adjacent to the rolling-contact bearing and with the non-rotating race (11) of the rolling-contact bearing, so as to form an axial limit stop for the latter.

Abstract: An open-end spinning machine has spinning stations and a magnetic and gas bearing with a stator at each of the spinning stations. A shaftless spinning rotor being electrically drivable with a single motor includes a series of spinning cups with different properties at each of the spinning stations for receiving fibers to be spun, and an electric rotor at each of the spinning stations forming an axial field motor with the magnetic and gas bearing and the stator. The spinning cups and the electric rotor have axially opposing end surfaces, and the end surfaces of the electric rotor and of one of the spinning cups at a time are coupled together to form a functionally appropriately releasable connection as a structural unit at each of the spinning stations.

Abstract: The invention relates to a bearing arrangement and parts suitable for said arrangement, such as a roller bearing, which is suitable for the absorption of shock loads. To that purpose those parts which come into contact with each other under shock loads or great loads are provided on one of the adjacent outer contact surfaces facing each other with a friction-reducing coating. Such a coating may contain molybdenum or bronze and is suitably applied by means of a thermal spraying method, such as wire spraying. The bearing arrangements provided by the invention have a significantly longer operational life.

Abstract: A shaftless spinning rotor for an open-end spinning machine advantageously protects the rotational bearing components in a combined magnetic-gas bearing management by utilizing a concentric magnet arrangement for the generation of a magnetic field for guiding the rotor relative to the stator, wherein a first dynamically balanced magnet unit projects from one of two opposed bearing faces on the rotor and the stator and a corresponding dynamically balanced magnet unit is recessed in the opposite bearing surface, the magnet units being dimensioned to produce an axial as well as a radial air gap therebetween. Air nozzles for producing the gas bearing open into the recessed area. The air gap in the area of the central axis can be embodied to be wider than the air gap between the opposed bearing faces.

Abstract: In order to improve the smoothness of operation of a shaftless spinning rotor embodied as the rotor of an axial field motor wherein the rotor is supported by a magnetic gas bearing, a guide magnet arrangement for generating a magnetic guiding field is decoupled mechanically from the drive component of the stator. To that end, separate magnet and stator components are connected to one another by means having both elastic and damping properties, e.g., rubber. This mechanical decoupling makes it possible for the separate components to execute vibration independently of one another and for vibration to be transmitted from one component to another only in highly attenuated form. Hence, machine vibration can substantially be prevented from affecting the smoothness of rotor operation. Tangential forces generated by harmonics and radial forces caused by magnetic or mechanical asymmetries can likewise be absorbed by the stator, with an attendant improvement in smoothness of rotor operation.

Abstract: A wheel hub unit in which an inner ring of a rolling bearing acts as a wheel hub and is rigidly connected to an outer cap of a constant-velocity universal joint; the inner ring is formed by a first element having a first race for the rolling bodies and a sleeve-shaped connecting portion and a second annular element provided with a second race for the rolling bodies, which is fixed to a first length of the sleeve-shaped portion so as to be rigid for rotation therewith, the second element being in abutment with an axial shoulder of the first element adjacent the first race and being axially locked thereagainst by means of the plastic deformation of a stop member; the cap of the joint being coupled with a second, splined length of the sleeve-shaped portion on which it is axially snap engaged.

Abstract: A drive for a shaftless spinning rotor wherein the spinning rotor is embodied as the rotor of an axial field motor utilizes axially opposed yoke-forming, magnetically conductive elements disposed respectively on the opposite sides of an air gap formed between the spinning rotor and the stator in combination with at least one magnet (preferably either permanent magnets or electromagnets) on one or both the rotor and stator arranged concentrically to one another and to the rotor axis. The present magnet/yoke arrangement does not require exact mutual alignment of oppositely located magnets nor their homogeneous polarization. The present arrangement is self-adjusting because of the generation of a point-symmetrical field which in operation forms a sort of magnetic potential depression. Magnetic drive and guide fields are advantageously decoupled in order to reduce their mutual interference.

Abstract: A rolling element bearing comprises at least two bearing rings (1, 2; 14, 15; 21, 22, 23) enclosing a bearing space (40), which bearing space (40) contains rolling elements (3, 13, 41), a cage (50, 16, 36) and lubrication structures having a porous matrix (8, 11; 17, 18; 36) containing oil and accommodated between bearing rings, cage and/or rolling elements. In order to obtain a better lubrication for an improved useful service life, the porous matrix (8, 11; 17, 18; 36) is connected to a rotatable bearing element such as a cage (50, 16, 36), a seal (4, 5) or a ring (22, 23, 24) in such a way that it does not physically contact another bearing element and that no frictional forces are generated with respect to such other bearing element, whereby upon rotation of the bearing element carrying the matrix the oil is driven through the matrix under the influence of centrifugal forces and any contaminants contained in the oil are filtered out.

Abstract: The encoder element (8) for a rolling-contact bearing equipped with an information sensor assembly is rendered integral with a rotating race of the bearing and interacts with a sensor of the said information sensor assembly in order to detect the speed of rotation of the bearing. It comprises an annular target (13) made of ferromagnetic material provided with a cylindrical bearing surface (13a) for mounting on the rotating race of the bearing and with a flat disc-shaped radial part (13b) with windows (13c) or slots of identical size and uniformly distributed along the circular path, and an axially magnetized bipolar ring (14) provided with axial crenellations (14b) which are uniformly and circumferentially distributed and which penetrate axially into the said windows or slots in the target.

Abstract: Free wheel device designed to be inserted between the outer cylindrical surface of a shaft and the cylindrical bore of a housing, of the type comprising a plurality of catching cams (1) retained solely by a spring strip of annular shape (11) having apertures (12) for the cams and return tabs (13) acting on the cams, wherein the lateral edges (14) of the spring (11) are locked axially with lateral retention components (16, 17) giving the spring (11) its final annular shape.

Abstract: A rolling element bearing, comprising bearing rings with rolling elements between the bearing rings, and a filter seal extending between the rings for closing a space between the rings. Said filter seal is oil permeable and water repellant. Hydrophilic chemicals are grafted on the side of the filter material facing the rolling elements. The side of the filter material opposite the rolling elements is coated with a water repellant substance having a high contact angle. The filter material is a metal mesh or a microporous polymeric material.

Abstract: A protective filter unit for use with a fluid seal assembly. The filter unit includes a screen positioning unit and a filter screen extending inwardly of portions of the positioning unit and terminating in an inner screen edge spaced just apart by a working clearance from a shaft forming a part of the sealed mechanism. The filter is associated in use with a seal having a seal casing which may be aligned with the screen positioning unit of the filter, and an elastomeric seal body having portions defining a seal band which engages the sealed shaft and another portion bonded to the seal casing. Preferably the screen positioning unit includes inner and outer support rings held apart by spacers, and the support rings, the spacers, and the screen are all made from plastic materials.