Aktiebolaget Skf

Gerard Buvril

Philipp Krebs

Sebastien Lecluse

Jean-Paul Giraudeau

Christian Boch

The system comprises a roller screw mechanismwhich is provided with a screwwhich comprises at least a first outer threaded portion, a nutand a plurality of rollerswhich cooperate with the first outer portionand an inner thread of the nut. The system further comprises a roller thrust bearingwhich is mounted on a second outer portionof the screw and which is provided with a bushingand a plurality of rollerswhich comprise flanks which cooperate with flanks of the second outer portionof the screw and the bushing. The flanks of the screw, the bushing and the rollers are configured so that, during a rotation of the screw, the rollersare fixed axially relative to the screwand relative to the bushing

System comprising a roller screw and a roller thrust bearing

The roller screw mechanism is provided with a screw including an external thread, with a nut arranged about and coaxial with said screw, the nut including an internal thread, and with a plurality of rollers inserted between the screw and the nut and each including an external thread engaging the external and internal threads of said screw and of said nut. The screw is axially moveable in relation to the rollers. The flanks of the thread of the screw have a concave profile in cross section.

Roller screw

The roller screw mechanism is provided with a screw comprising an external thread, with a nut arranged around and coaxial with the said screw, the nut comprising an internal thread, and with a plurality of rollers interposed between the screw and the nut and comprising flanks interacting with the said threads. The value of the opening angle &#x3b1; of the flanks of the external thread of the screw is greater than the value of the opening angle of the flanks of the rollers.

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Bourget du Lac, France

Gerard Buvril