Safety Products
TYPESEnergy capacity Nm/cycleStroke mm

Safety Shock Absorbers

Low reaction forces with long strokes

High Rack Damper, Optimized Characteristic
Energy capacity 229,100 Nm/cycle
Stroke 1,200 mm

Intelligent protective measure: The safety shock absorbers from the SDH38 to SDH63 product family are also designed for emergency-stop applications. Strokes of up to 1,200 mm are possible with these maintenance-free and ready-to-install dampers. Low support forces result due to the large strokes.

The characteristic curve or damping characteristics of all safety shock absorbers from ACE is individually adjusted to the respective application, specific to the customer. The metering orifices for the respective application are specially calculated and produced. These tailor-made machine elements are the ideal protection because they are less expensive than industrial shock absorbers and are effective with up to 1,000 maximum full load emergency cycles possible.

CAD Drawings


High Rack Damper, Optimized Characteristic


Stroke1,200 mm
A max.2,890 mm
B1,671 mm
D1,622 mm
E max.1,244 mm

Technical data

Energy capacity 229,100 Nm/cycle

Reacting Force 210,000 N

Return Force min. 1,500 N

Return Force max. 2,500 N

F and S
Side Load Angle max.
1.2 °

Side Load Angle max.
0.8 °

Impact velocity range 0.5 m/s to 4.6 m/s

Operating temperature range -20 °C to +60 °C. Other temperatures on request.

Mounting in any position

Positive stop Integrated

Material Outer body: painted steel; Piston rod: hard chrome plated steel; Rod end button: steel

Damping medium HLP 46

Filling pressure approx. 5 bar. Rod return by integrated nitogen accumulator.


For creep speed applications, please consult ACE.

On request

Special oils, special flanges, additional corrosion protection etc. Integrated rod sensor for indicating the complete extension of the piston rod. Type normally closed or normally open, option PNP or NPN switch.

General information

Application Examples

SDH38-63 Stone transportation car
SDH38-63 Stone transportation car
ACE safety shock absorbers defy the forces of nature. In order to efficiently protect against falling rocks, a net is put through its paces under realistic conditions. Large sized SDH80-500EU-F type safety shock absorbers with additional crash sleeves safeguard the high durability of the test construction. These models provide the necessary reserves for energy absorption, especially with ...
SDH38-63 End-position damping in 2 axes
SDH38-63 End-position damping in 2 axes
The aim was to protect a driving simulation capsule on two of its eight axes. The demands placed on a potential emergency stopper were high because it was clear that its failure would lead to massive damage to the complete construction as well as to the capsule. Even the possibility of damage to the health of the test personnel could not be ruled out and was taken into consideration in a ...

Application Areas

  • shelf storage systems
  • test stations
  • heavy load applications
  • conveyor systems
  • portal systems
Anyone who wants to reliably protect the end positions of rack operating equipment, conveyor and crane systems, heavy duty applications and test benches chooses these safety shock absorbers from ACE.

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