Schaeffler Technologies Ag & Co .kg

Thomas Gietl

Harald Peschke

Wolfgang Bauer

Steffen Dittmer

Andreas Bohr

Georg Goppelt

A seal () for a hydrostatic linear guide with a given adjustment direction (), with a longitudinal seal section (') extending essentially parallel to the adjustment direction (), and with a transverse seal section (&#x2032;) extending essentially transverse to the adjustment direction (), wherein a first lip seal with a projecting lip portion () extends along the longitudinal seal section and a second lip seal with a projecting lip portion () extends along the transverse seal section. A height of the projecting lip portion () of the first lip seal oscillates in a wave shape in the adjustment direction. With such a seal (), both a high degree of static oil tightness and also a high degree of dynamic oil tightness are achieved for a hydrostatic linear guide.

Seal for a hydrostatic linear guide

A seal () for a hydrostatic linear guide with a given adjustment direction (), with a longitudinal seal section (') extending essentially parallel to the adjustment direction (), and with a transverse seal section (&#x2032;) extending essentially transverse to the adjustment direction (), wherein a first sealing lip () extends along the longitudinal seal section (&#x2032;) and a second sealing lip () extends along the transverse seal section (&#x2032;), and wherein the longitudinal seal section (&#x2032;) and the transverse seal section (&#x2032;) are connected to each other. Here it is provided that the first sealing lip () and the second sealing lip () merge into each other with a constant curvature (). With such a seal (), both a high degree of static oil tightness and also a high degree of dynamic oil tightness are achieved for a hydrostatic linear guide.

Gasket for a hydrostatic linear guide

A hydrostatic mounting of longitudinally displaceably arranged machine parts, which have pressure pockets for hydraulic fluid for building up a hydrostatic pressure between two machine parts, gaps connected to the pressure pockets and delimited by gap faces of the two machine parts, a drainage for the reception of hydraulic fluid flowing out from the gaps, and a seal, arranged effectively between the machine parts and surrounding the gaps, sealing against the escape of hydraulic fluid. An environment-side portion of the seal is at the same time a portion of the drainage creating a double-acting portion. The double-acting portion of the seal is formed from a material permeable to the hydraulic fluid.

Hydrostatic mounting

A roller bearing which is sealed by a sealing washer that forms a rubbing seal and two gaps. As a result of positions which are spaced apart from one another in the axial direction of a pivot point and a center of mass of an elastic support part that bears the rubbing seal, the latter is loaded with an outwardly acting axial force in the event of an increased rotational speed as a result of the centrifugal force, with the result that the rubbing sealing lip is in contact with a lower force as the rotational speed increases.

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Pegnitz, Germany

Thomas Gietl