Firma Carl Freudenberg

Other

Carl Freudenberg Kg

Anja Kunkel

Hans-Gerd Eckel

Michael Muller

Gerhard Röhner

A seal arrangement for a shaft end. The seal arrangement includes an annular sealing lip that before use is braced on a support sleeve. The seal arrangement also includes a sensor ring that overlaps, radially inward with a flange, the sealing lip and the support sleeve, at the end facing away from the sealed space. The sensor ring is axially displaceable with respect to the sealing lip. The support ring includes at least three segments movable relative to one another and abutting against one another in the circumferential direction. The segments are fastened on the sensor ring nondisplaceably in the axial direction and displaceably outwardly in the radial direction. For easier insertion of the shaft end, the support sleeve has at the end facing the sealed space an inside diameter that is expanded in hollow conical fashion, and/or the shaft end has an outside diameter tapered in conical fashion in the opposite direction.

Radial shaft seal

An active vibration canceler, including a canceler mass that is attached by a spring device to a supported bearing. The canceler mass is movable by a plunger coil arrangement and a permanent magnet so as to result in at least partial suppression of relative movements of the supported bearing in at least one frequency range. The spring device joins the canceler mass and the supported bearing for relative movement in one direction. The spring device includes at least three leaf springs arranged in at least two planes, which leaf springs, in the idle position, extend circumferentially in the same direction.

Active vibration canceler

A vibration dampener adapts to different speeds of rotation. The device comprises a drive collar (1) and several inertial masses (2). The collar rotates around a central axis (3) and the inertial masses pivot around peripheral axes along the direction of rotation. Each inertial mass is secured to the collar by two bolts (5). The bolts, which extend parallel the central axis, are distributed around the circumference of the collar, and roll back and forth along arcs (6). The arcs are concave toward the central axis in the vicinity of the collar and concave in the opposite direction in the vicinity of the inertial masses. The bolts extend through a guide (7) toward the sides facing away from the associated arcs.

Speed-adaptive vibration dampener

A torsional vibration damper for a shaft rotating about an axis. The damper comprises a hub element joined to the shaft, such that at least two inertial masses, pivotable in the peripheral direction about pivot axes, are retained on the hub element. At least one spring for each inertial mass is provided to determine the static position of the inertial masses. The pivot axes lie between the inertial masses and the axis of the shaft.

Torsional vibration damper

A switchable hydraulically damping mount, having a supporting mount and a supported mount which are resiliently braced against one another by a support spring made of an elastomeric material. The mount includes at least two working chambers filled with fluid and arranged one behind another in the direction of vibrations introduced during operation. The working chambers are delimited on the sides facing one another by a common partition and are connected in a fluid-carrying manner to one another by at least one damping channel arranged in the partition. The partition has a central recess that is a component of a passthrough opening, such that the passthrough opening can be opened by an actuator, which can be acted on by a pressure medium, of a positioning device. The passthrough opening has a meander-shaped cross section extending in the radial direction.

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Siedelsbrunn, Germany

Anja Kunkel