DC-Type / Double-Acting Shock Absorber

Gas Hydraulic Industrial Buffer / COMPENSER®

With the DC-Type (double-acting buffer) LEBEN provides a very space-saving hydraulic industrial shock absorber for various applications.

Double-Acting Industrial Shock Absorber

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 double-acting buffer, this industrial shock absorber can be used in a space-saving 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. Maintenance and simple repairs can be carried out on-site by the customer’s own staff due to the modular design of this damper.


  • installation position: horizontal
  • low reset force
  • space saving, double-acting shock reducing element
  • high buckling safety
  • surface: housing galvanized (standard) or painted, piston rod hard chrome-plated (standard)
  • low-viscosity COMPENSOL®
  • foot mounting or flange mounting
  • optionally constant reaction force over the entire stroke or increasing reaction force in the beginning stroke range
  • very short activation time after impact
  • temperature range -40 to +80 °C
  • energy absorption up to 240 kNm

see C-Type series

  • Auxiliary accumulator for reducing the resetting force and separating the damping medium phase from the nitrogen gas phase, e.g. in operational load cycles
  • Sensor for signalling the operational readiness of the shock reducing element (inductive, magnetic and explosion-proof according to ATEX)
  • Integrated monitoring of filling levels
  • Maintenance connection for filling damping medium and nitrogen gas
  • Specific materials, e.g. stainless steel for a highly corrosive environment or use in the food industry
  • High-quality corrosion protection according to DIN EN ISO 12944 up to corrosion class C5M
  • Protective bellow as the best possible protection against dust, dirt or corrosive media
  • Maintenance-free mechanical reset of the piston rod by means of a compression spring
  • Safe usage in automotive & food industry by appropriate COMPENSOL®
  • SpecialCOMPENSOL® for use in extreme temperature ranges
  • Valve to minimize the reset time
  • Valve for minimizing the push-in force during operational load activity
  • Drive energy absorption (throttling)
  • End position damping
  • Optional round or square flange on front or rear
  • Foot mounting (welded or flanged)
  • Special mounting elements according to desired geometry of the customer
  • PU impact cap for noise reduction
  • Special impact cap on customer request and for special applications (catching impact cap in case of two colliding impact caps)
  • Safety rope attached to the piston rod
  • Special seals for use in extreme temperature ranges
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