Schaeffler Technologies Ag & Co .Kg

Ina Walzlager Schaeffler Ohg

Johann Singer

Thomas Mennerat

Stefan Doliwa

Christine Thomann

Christian Krüger

A tensioning device for a belt or chain drive with a tensioning lever () which is provided with a rotatable tension roller () mounted rotatably a drag bearing () constructed as a plain bearing on a base housing (), and radially at a distance from the axis of rotation () of the drag bearing (); with a pretensioned torsion spring (), which is constructed as a helical spring ('), disposed coaxially with the drag bearing () and connected at the spring ends () thereof at the housing side to the base housing (), and at the lever side to the tensioning lever (); and with a brakeshoe () which is disposed at one spring end () and which can be pressed by the spring end against a component which can rotate about the axis of rotation () of the drag bearing () relative to the spring end (). In order to achieve good heat dissipation of the friction damping device and uniform stress on the drag bearing (), the brake shoe () is constructed and is disposed at the lever-side spring end () of the helical spring () such that the brake shoe () is clamped peripherally between the spring end () and a radially directed stop surface () of a catch attached to the tensioning lever () and, via a contacting force (F) resulting from the two peripheral tangential forces (F, F) from the helical spring () and on the helical spring (), can be pressed with an outer cylindrical friction surface () largely radially against a cylindrical inner wall () of the base housing ().

Tensioning device of a belt and chain drive

The invention relates to a tensioning device of a traction mechanism drive, having a tensioning lever mounted on a base housing and rotatable by a pivot bearing. A coil spring is arranged coaxially to the pivot bearing. The pivot bearing comprises a bearing journal, a bearing hub and at least one plain bearing sleeve which is arranged between the bearing journal and the bearing hub, and a central radial force application plane of the tensioning roller is axially spaced apart from a central radial bearing plane of the pivot bearing.

Tensioning device of a traction mechanism drive

The invention relates to an end profile on slide bearing complementary elements having a pin () and at least one bearing sleeve () for receiving the pin (), said pin () absorbing an eccentric force (F) which acts perpendicularly with respect to the pin/bearing sleeve unit (), and the at least one bearing sleeve () being of cylindrical configuration and the pin () being of tapering configuration in a manner which extends from predefined positions in each case toward the axial end. In addition, a geometrically opposed geometry of the pin and the bearing sleeve is claimed.

End profile on slide bearing complementary elements for reducing surface pressure

The invention relates to a deflection pulley (), intended for a traction drive, which includes a rolling-contact bearing as well as a ring body (). A securing screw () as well as a spacer sleeve () serve as retaining elements. In order to provide a transport safety system (), the spacer sleeve () is provided with at least one radial inwardly directed projection () which radially overlaps a threaded section () of the securing screw ().

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Grossenseebach, Germany

Johann Singer