Schaeffler Technologies Ag & Co .kg

Ina Walzlager Schaeffler Ohg

Sigurd Wilhelm

Dieter Adler

Bernhard Wiesneth

Alexander Zernickel

Harald Hochmuth

Ernst Strian

Gerhard Prosch

Nicky Heinrich

Wilfried Eckert

Stefanie Oeder

A threaded nut of a ball-screw for a brake booster is constructed as a hydraulic piston and is produced from the group of martensitically hardening steels which are non-corroding with respect to brake fluid and which has in percent by weight: between 0.4% and 1.3% carbon (C), up to 2% silicon (Si), up to 2% manganese (Mn), between 12% and 20% chromium (Cr), and phosphorus (P) and sulphur (S) together at less than 0.015%, the balance being iron and, where applicable, melting-related impurities. Addition of the following materials to the above-described steel may be advantageous: up to 2% molybdenum (Mo), up to 0.2% vanadium (V), and up to 3% nickel (Ni).

Threaded nut of a ball screw drive

A ball screw () having a threaded nut () arranged on the threaded shaft () and a ball channel () wound about the longitudinal axis of the threaded shaft (), and in which the balls () and at least one helical spring () are received. This helical spring () is supported on a molded part () which is inserted into a recess () of the threaded nut () and closes the recess ().

Ball screw

A clamping device for the positional fixing of a vehicle steering column which can be adjusted in its length and/or inclination has a clamping disc and a plurality of rolling bodies, with clamping ramps for the rolling bodies being formed on the surface of the clamping disc, wherein the rolling bodies each make contact with one of a plurality of separate contact elements arranged in a common plane.

Clamping device for a steering column

A device for damping rotary oscillations in a drive train with a freewheel clutch () located between a pulley () and a rotor hub () is provided. The hub () is connected to an input shaft of an auxiliary unit, and the pulley () is connected to a crankshaft via a traction means, and the freewheel clutch () has an inner ring (), which surrounds the hub () while being fixed thereto, and includes an outer ring (), which surrounds the inner ring () with radial play and which is fixed to the pulley (). At least one locking element () that is actuated by centrifugal force is provided in the inner ring (), and at least one locking receptacle () is provided in the outer ring ().

Device for damping rotary oscillations

A hydraulic master cylinder for a clutch or brake of a motor vehicle is simultaneously optimized for cost-effective mass production and for functional properties.

Growing community of inventors

Herzogenaurach, Germany

Sigurd Wilhelm