LEBEN-DÄMPFUNGSTECHNIK GMBH - LEBEN manufactures industrial shock absorbers, vibration dampers, hydraulic buffers & crash-elements

Germany

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LEBEN-DÄMPFUNGSTECHNIK GMBH
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12 Products

Germany

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The hydraulic industrial shock absorber of the C-series (COMPENSER®) is the ideal hydraulic buffer for storage and retrieval machines or smaller conveyor systems, crane systems, test stands etc. in light to medium mechanical engineering. Due to its short design, this hydraulic buffer (COMPENSER®) can be used in a spacesaving manner as limitation of the end position (as emergency end stop) in industrial applications. In addition, the low reset force allow operational pushin cycles at creep speed. Design & Function: The piston rod 2 enters the metering tube 3. The damping medium flows from the pressure chamber 6 through the throttle orifices 4 of the metering tube 3 into the volume balance chamber 5. The nitrogen gas between the outer tube 7 and the metering tube 3 is compressed and stores the energy required for the reset of the piston rod. When the piston rod 2 returns to the initial position, the damping medium flows back into the pressure chamber 6.

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The preferred field of application for the (gas) hydraulic industrial buffer (COMPENSER®) of the S-series is in the medium to heavy engineering industry sector. As a heavy duty shock absorber it is used in large crane systems (e.g. harbour crane, shipyard crane or container crane), metallurgical plants, rolling mills, loading systems or as end stop integrated in a rail buffer stop. Design & Function: The gas-filled inner tube 2 enters the outer tube 9. The damping medium flows from the pressure chamber 6 through the throttle orifices 8 of the metering tube 7 into the volume balance chamber 5. The separating piston 4 simultaneously moves in the direction of the impact cap 1 and compresses the nitrogen gas filling. In the gas space 3, the energy is stored which is required for the reset of the inner tube. When the inner tube 2 returns to the initial position, the separating piston 4 moves in the opposite direction and presses the damping medium back into the pressure chamber 6.

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The COMPENSER® of the CE-series is a nonreversible maintenancefree shock reducing element / shock absorber which can be used for emergency use, for example as a fall protection. If necessary, several deformation tubes (so-called crash element) can be installed in parallel as end stops. Design & Function: The crash element is attached to the support structure using the flange 3. In the event of an impact, the stamp (acting as a mandrel) 1 enters the deformation tube 2 and expands it. Applications: Automated storage and retrieval system | Conveyor system | Storage technology | Automation | Heavy duty | Heavy equipment | Engineering | Crashtest | Flight simulator | Special construction | Special machines | Actuator | Test device | Small parts warehouse | High-bay warehouse | STC | HRL | Storage and retrieval systems (AS/RS) equipment | non reversible | Leakage-free | Shuttle

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The COMPENSER® of the KL-series is an industrial shock absorber for light mechanical engineering, e.g. handling equipment, small storage and retrieval machines and small crane systems. Due to the low reset force of the compression spring, this buffer of the KL-series is well suited for operational push-in cycles at creep speed. Design & Function: The piston rod 2 pushes the piston 6 into the pressure chamber 7. At the same time, the damping medium flows through the metering grooves placed in the outer tube 8, via the piston 6 and into the volume balance chamber 5. The return spring 3 is tensioned and, after the impact has occurred, pushes the piston rod 2 back to the initial position. By this the damping medium flows back into the pressure chamber 7.

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The COMPENSER® of the DC-series is an ideal hydraulic shock reducing element especially for the application field of storage technology (storage and retrieval machines). As a doubleacting buffer, this industrial shock absorber can be used in a spacesaving manner due to its design and can be actuated alternately from both sides. The constructive design and function corresponds to the C-Type. Furthermore, due to its low reset force, it can easily be pressed in at creep speed during operation. As optional equipment PU caps as inserts for the impact cap for the reduction of impact noise and a monitoring of the piston rod‘s position (by either magnetic or inductive sensors) are available. If only a slight increase of reset force of the piston rod over the entire stroke is desired, an additional external accumulator can be fitted to the cylinder to increase the gas volume of the gas spring. Hence the reset force decreases in retracted state.

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This design by LEBENDämpfungstechnik GmbH acts as a hydraulic shock absorber in both, pulling and pushing direction. The energy dissipation of this kind of industrial shock absorber is performed in two ways Working principle As a purely hydraulic variant (TwinStroke®) – in push (compression) direction hydraulically reversible by means of damping medium – in pull (tension) direction hydraulically reversible by means of damping medium The TwinStroke® dampens push and pull forces without an additional functional element. A piston system transmits the push and pull forces gashydraulically to different gas and oil chambers. In this way, any load can be absorbed immediately without idle stroke, socalled “slack”, and with minimal wear. The TwinStroke® can absorb changing loads very well. The smaller size and lower weight is advantageous, as only one element is needed to absorb compression and tension forces.

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Shock reducing elements by LEBENDämpfungstechnik GmbH known as hydrostatic, viscoelastic or elastofluid shock absorbers with an integrated springdamper operating principle. Advantage Use in pulling and pushing direction Small design Very high preload of the shock absorber Individual reset force of the piston rod depending on the application Used as a buffer in Railway couplings Water locks / sluices … Illustrated hydrostatic buffer Damping of the pretensioned rope catch (tensioned catch rope) in front of a water lock

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Vibration absorbers are produced in several configurations SINGLE TUBE VIBRATION ABSORBER for pull and push absorption at random mounting positions. The length is increased to keep the diameter dimension at a minimum. TWIN TUBE VIBRATION ABSORBERS for pull and push absorption. The preferred mounting position is vertically aligned. Compared to single tube absorbers, the length is decreased, while the diameter is enlarged. The characteristic of damping for both types can be progressive or degressive. (Detailed information concerning application and calculation can be found in the VDIGuideline VDI 3833 Bl.1+2 – German Association of Engineers Guideline.)

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Rotating Piston Absorbers are displacement absorbers using hydraulic flow resistance. They are used to damp rotational vibrations, e.g. absorbers for ropeway cabins (see VDIRichtlinie VDI 3833 German Association of Engineers, sheet 1). The design is customized. Due to different operating conditions, no standard design is possible. (see also VDIGuideline, VDI 3833 sheet 1)

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Due to many years of experience in the field of damping technology, LEBEN is able to replace shock absorbers of other makes from various manufacturers. The required characteristics of the damping property as well as the dimensions of these industrial shock absorbers to be replaced can usually be met by a replacement shock absorber made by LEBENDämpfungstechnik GmbH.

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LEBEN-DÄMPFUNGSTECHNIK GMBH

Altenstadter Str 11

86987 Schwabsoien - Germany

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