Abstract: A freewheel device of the type comprising a plurality of wedging cams 5 mounted in at least one holding cage 8, a plurality of rolling bodies 15 mounted in an additional cage 18, an outer race 1 equipped on its bore with a track 6 along which the cams 5 can slide and with a raceway 16 along which the rolling bodies 15 can roll, an inner race 2 equipped on its cylindrical outer surface with a track 7 along with the cams 5 can slide and with a raceway 17 along which the rolling bodies can roll, to allow the one-way coupling between the outer race 1 and inner race 2. The freewheel device comprises, on one side, an end plate 12 secured to one of the races, adjacent to the holding cage 8 and axially retaining said cage in one direction, and the additional cage 18 for holding the rolling bodies 15 comprises means of axial retention, at least in the other direction, with respect to the race supporting the end plate.

Abstract: Coach coupling assembly for coupling together two coaches of a railbound multi-unit set of coaches has a first coupling arm fixed to one of the coaches and a second coupling arm fixed to a second one of the coaches. The first coupling arm has a vertical through-bore that houses the outer race ring of a rolling bearing. The bore in the inner race ring of the bearing receives a depending shaft journal that is fixed to the second coupling arm. An arrangement is provided to damp radial forces acting upon the coupling and to compensate for misalignment between the axes of the through-bore and the shaft journal. In this regard, the through-bore is provided with an elastic lining of resilient material, and the bearing used is an angularly self-aligning rolling bearing that permits a certain degree of misalignment between the through-bore and the shaft journal. The bearing is fitted inside the lining, which is thereby adapted to take up and dampen radial forces acting upon the coupling.

Abstract: In a device for gauging relative rotational speed between the races of a bearing unit, a sensor is mounted to a fixed part and faces a rotating impulse ring. The sensor is incorporated within a detachable head (12) having releasable quick coupling means (13, 20), such as a clip, for mounting to a corresponding quick coupling seat (14), such as an appendix, rigid with the non-rotating race (15) of the bearing assembly. The appendix (14) is oriented in an axial or slightly inclined direction with respect to the axis of rotation. Mounting and removal of the head (12) is accomplished with a simple movement in said direction.

Abstract: An apparatus for punching out pockets in a roller cage for rollers is provided with two simultaneously movable male dies whose outer cutting edges in the circumferential direction are spaced apart from one another by at least about 0.4 times the cage diameter. These male dies are preferably operative from the interior of the cage and each punches slightly more than half the pocket width. By indexing the cage by one pocket division each time, the pockets are punched out completely. In each punching increment, they receive the runup face for the roller over their entire length, which runup face need not be further machined.

Abstract: The present invention relates to a radial roller bearing assemblies. More specifically, the invention relates to radial roller bearing assemblies including an outer ring having radially inwardly directed stop flanges, a cage comprising a pair of side rings and webs connecting the side rings, circumferentially spaced to define pockets for rolling elements, each of the side rings having radially projecting segments located at diametrically opposed locations wherein the distance (Dc) between the highest point on the segmental projection of one of the cage side rings and the diametrically opposite point of the same cage side ring is in a predetermined relation to the diameter (Dk) of the bore of the stop flange so that when the axial centers of the cage and ring are coincident, the segmental projections confront the inner radial faces of the stop flanges.

Abstract: A rolling bearing sealing device comprises a first, truncated-cone surface (21) integral with the non-rotating race (11) of the bearing and diverging axially towards the outside of the bearing, and a second truncated-cone surface (23) parallel to the first surface (21). The second surface is integral with the rotating race (16) of the bearing. The first and second surfaces (21, 23) are spaced apart and facing each other so as to determine therebetween a gap (25) of truncated-cone shape having a length (L) and a width (w) such to resist water entering in a chamber (26) communicating with the outside when the bearing is at rest, and expel water centrifuging it out of said chamber as the bearing rotates.

Abstract: The invention relates to an electrode for electrochemical machining. An electrode comprising a plurality of electrode segments separated by insulating material. As desired, different voltages are applied to each of the electrode segments giving control over the amount of material locally removed from the metal piece. The invention also relates to a method of electrochemical machining.

Abstract: In a cylindrical roller bearing assembly with flanges on the outer ring and a comb cage comprising a side ring and separating webs projecting axially from the side ring and which engage axially between the rollers, some of the webs having tabs, which project radially outwardly and engage behind the side surface of one of the flanges of the outer ring, characterized in that at least two tabs are distributed around the circumference and in that two insertion openings with a cross-sectional profile corresponding to that of the tabs are provided on the other flange for the coaxial insertion of the comb cage in the outer roller.

Abstract: The invention relates to electrochemical machining of metal pieces, and, in particular, rings of bearings, in a controlled way. To achieve this process, parameters, such as current, are actively controlled. This allows the raceway to be completed sooner and with a smoother, more circular surface. In addition the active control makes the formation of more complex forms possible and is suitable for the cheap manufacture of trilobed raceways.

Abstract: The present invention relates to a polymer thickener for lubricant grease compositions, wherein the thickener comprises a mixture of (1) a high molecular weight (co- or homo-)polymer of propylene with a weight average molecular weight .gtoreq.200,000 and (2) a low molecular weight (co- or homo-)polymer of propylene with a weight average molecular weight .ltoreq.100,000. The invention further relates to a lubricating grease composition comprising a lubricating oil and the above polymeric thickener, as well as a method for preparing said grease composition. Also, the invention relates to the use of such a polymer thickener in the preparation of lubricating grease compositions with improved oil bleeding characteristics at low temperature and improved noise characteristics and/or improved mechanical stability.

Abstract: Rolling bearing comprising a stationary race 1, a rotating race 4, a row of rolling bodies 7 arranged between the stationary race and the rotating race, an encoder means 10 secured to the rotating race and concentric therewith and a sensor means 9 supported by a sensor carrier block 11 secured to the stationary race and arranged facing and a small gap away from the encoder means, the travel of which, during rotation, is detected by the sensor means 9. The rolling bearing comprises a means for trapping the sensor carrier block 11 against a surface 14 of the stationary race 1.

Abstract: A rolling bearing includes an outer race ring, an inner race ring and a plurality of rolling bodies arranged between the race rings and adapted to roll against race tracks provided in the race ring surfaces facing each other. The bearing further includes at least one member spaced apart from the race tracks and contacting both race rings. The rolling bodies are electrically non-conductive while the at least one member contacting both race rings is highly electrically conductive, thereby allowing the transfer of electrical currents out of the bearing in an unharmful manner and/or the transfer of electrical signals through the bearing for processing outside the bearing.

Abstract: A greased lubricated rolling element bearing including an inner ring, an outer ring, a plurality of rolling elements disposed between said rings, and a cage for holding the rolling elements at a predetermined mutual spacing, has a lubricating grease composition present on the surfaces of said rings, said rolling elements and said cage. The cage is coated on at least the parts of its surface that are in sliding contact with said rolling elements, said inner ring or said outer ring, with a solid lubricant containing coating for lowering the running temperature of at least the cage. The solid lubricant containing coating preferably comprises a disulfide and/or diselenide of a Group V or VI transition metal, more preferably MoS.sub.2 and/or WS.sub.2 in combination with an organic resin such as PTFE.

Abstract: A method for joining a ring member, e.g. a bearing inner race ring, to a shaft so that the ring member is primarily prevented from axial motion relative to the shaft involves arranging the ring member over the shaft so that the shaft extends through a bore in the ring member, and applying between the ring member and the shaft a clamping wedge force in which a tapering locking surface acts against a substantially corresponding tapering surface. The device for joining the ring member to the shaft includes a locking member mounted on the ring member and provided with a tapering contact surface that faces towards the shaft. An arrangement is provided for pressing the locking element against a tapering counter surface that is fixed in position relative to the shaft to prevent axial movement of the ring member on the shaft.

Abstract: A device for gauging relative rotational movement and/or displacement between the races (10, 11) of a bearing comprises a pulse generator (13) activated by the rotating race (11) and coupled to a non-rotating sensor (12). The pulse generator consists of a coding wheel and the sensor consists of an optical encoder. The coding wheel (13) comprises a disk of reflecting material on which a plurality of non-reflecting zones or apertures is provided.

Abstract: The output of an eddy current probe is demodulated and subsequently linearized using an analog to digital converter, a digital signal processor, and a memory. The linearized digital output signal is converted back to an analog signal, the voltage of which is preferably directly proportional to the position of the conductive target in relation to the probe.

Abstract: A polymer thickened lubricating grease composition with improved resistance to high operating temperatures (constant and/or peak), containing 1) a lubricating base oil, 2) a polymeric thickener, containing a) a high melting point component comprising at least one polymer with a melting point (ASTM D-2117) of more than 200.degree. C., especially more than 225.degree. C., and b) a low molecular weight component comprising a (co- or homo-) polymer of propylene with a weight average molecular weight <100,000, and 3) optional further lubricating grease additives. The polymer thickener of the grease preferably further contains c) a high molecular weight component comprising a (co- or homo-) polymer of propylene with a weight average molecular weight >200,000. The grease preferably has a dropping point of >150.degree. C., more preferably 180.degree.-220.degree. C., and is suitable for use in high operating temperature applications.

Abstract: Vibration data is transmitted from a remote site to a control facility using wireless data transmission. In one embodiment, the vibration signal is conditioned and digitized, and then sent via satellite to a hub satellite receiving station. From the hub satellite receiving station, the data may be sent to the control facility via the public telephone network.

Abstract: A bearing arrangement is equipped with a radial bearing and with a roller bearing which acts purely in the axial direction. Rollers of axial bearing have a needle-like, barrel-like design. Bearing rings are provided with the corresponding profiles. When axial play develops in the bearing arrangement, rollers shift radially under the effect of gravity in one case and under the effect of centrifugal force in the other with the effect of eliminating the axial play.

Abstract: The invention relates to a method of manufacturing a roller bearing comprising a cage made from a thermoplastic polymer-containing material. By cross-linking the polymeric material its properties, such as form retention and compatibility with lubricants, are improved. A roller bearing provided with a cage made from suitably cross-linked thermoplastic polymer-containing material can be used even at temperatures above the melting point of the polymer. According to the invention a roller bearing is manufactured by forming a cage from thermoplastic polymer-containing material, providing it with rotating bodies and only then cross-linking the material. This avoids damage to an otherwise already rigid cage during the insertion of the rotating bodies.