Schaeffler Technologies Ag & Co .kg

Ina Schaeffler Kg

Rainer Schenk

Tomas Smetana

Rainer Eidloth

Harald Peschke

Georg Goppelt

Thomas Fickert

Wolfram Kruhoeffer

Ralph Painta

Aleksandar Lutkic

Bernard Nicola

The invention relates to a tensioning or deflector pulley, in particular for the belt drive on an internal combustion engine, essentially comprising a plastic or steel running pulley, formed by an inner hub ring, an outer running ring and a pulley disc, connecting both rings to each other, with a radial roller bearing fixed in the hub ring of the running pulley, made up of an inner bearing ring and an outer bearing ring with a number of rolling bodies running between the bearing rings in channeled running tracks, retained at regular separations from each other by a bearing cage with a seal to both sides of the roller bodies, by means of which the cavity, formed between the bearing rings and designed as a grease reservoir, is sealed.

Tensioning or deflector pulley in particular for the belt drive on an internal combustion engine

Subassembly of at least two machine parts, the outer machine part, in particular a tensioning roller with a running disk made of steel being fastened with its internal circumferential surface on an external circumferential surface of the inner machine part a raceway ring of a rolling bearing, by means of compression connection, wherein the overlap of the internal diameter of the outer machine part, in particular the running disk, and of the external diameter of the inner machine part, in particular raceway ring, and the dimensions of the machine parts and their materials are selected such that the outer machine part, in particular the running disk, is deformed into the plastic range of material strain.

Belt-tensioning roller

A seal for a pulley on a roller bearing includes a sealing cap which covers the front face of the roller bearing and is connected to a hub for externally enclosing the roller bearing. On the opposite side, the roller bearing has a sealing plate, which is likewise fixed to the hub and on the inner side interacts with a cylindrical section of the fixed housing.

Seal

A tensioning or deflection pulley for a belt drive includes a carrier and a track roller comprised of an inner ring, an outer ring, and a connecting assembly, including a wheel disk extending between the inner and outer rings, and a rib assembly disposed in both sides of the disk in circumferential spaced-apart relationship, for interconnecting the inner and outer rings. The track roller is supported on the carrier by a sealed rolling-contact bearing via a fastening screw. A first sealing element is connected to the track roller on a carrier-distal side, and a second cap-shaped sealing element is disposed between the carrier and the track roller and detachably secured to the inner ring of the track roller to thereby seal the track roller on both sides.

Tensioning or deflection pulley for a belt drive

Growing community of inventors

Fürth, Germany

Rainer Schenk