Abstract: A unit comprises a double row taper rolling element bearing (1) having an inner ring means (12, 13) and an outer ring means (6), said inner ring means being fitted on an axle stub (5) between two opposite mounting faces (7, 10), means (19) being provided for preventing fretting corrosion between at least one of said mounting faces and the inner ring means. At least one mounting face and the inner ring means engage each other by means of a polymer support ring (19). The bearing unit can be applied as a railway axlebox bearing unit.

Abstract: Method for manufacturing a cage, of the type intended to hold rolling bodies in place in a rolling bearing comprising at least one row of rolling bodies arranged between two raceways. The said cage comprises an annular part with cells intended to accommodate the rolling bodies, the said rolling bodies being clipped into the cells and held therein by means of elastically deformable members. The cage is obtained by moulding a blend of a polymer from the polyphthalamides group and of an elastomer.

Abstract: A rolling bearing device comprises an outer ring 105 provided with an internal raceway 106 formed on its bore, an inner ring 101 provided with an external raceway 102 formed on its cylindrical exterior surface, at least one row of rolling bodies 111 arranged between the two raceways 102, 106 and at least one sealing member 121 secured to one of the rings. The sealing member 121 comprises an annular metal reinforcement 123. The device comprises a part 126 for connecting between the reinforcement 123 and the ring which supports it, the connecting part 126 being formed by a filler metal which, after melting and cooling, provides attachment, sealing and molds to the shapes of the said reinforcement and the said ring.

Abstract: A method is disclosed of manufacturing a pulley with integral bearing comprising a sheet metal pulley mounted on the outer race of a bearing. The pulley is a close sliding fit on the outer race. The interstice between the pulley and the race is at least partly filled with a low-melting-point filler metal which, when heated, melts and diffuses by capillary action into the interstice between the pulley and the race, at least partly filling the interstice and fastens the pulley to the race when it solidifies. The filler metal is advantageously a brazing alloy having a melting point much lower than that of the parts to be joined together. Applications of the method include the manufacture of belt tensioning pulleys with integral bearings, as used on automobile vehicle engines, for example.

Abstract: A tension roll includes a rolling bearing protected by a sealing disk and having an outer ring possessing an end face and a bore surface, and an injection molded plastic roller shell arranged on the outer ring of the rolling bearing. The roller shell includes sections that are molded in one piece and cover the end face and the bore surface of the outer ring up to the sealing disk.

Abstract: Method for measuring the thickness of a lubricant film between two surfaces which are in motion with regard to one another, characterized by the fact that a lubricant with high relative permeability is used, whereby the polar pieces of an electromagnetic sensor are brought into contact with the lubricant film to be measured in such manner that they are bridged by the lubricant film.