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SC²25 to SC²190

Piston tube design for maximum energy absorption

Self-Compensating, Piston Tube Technology
Energy capacity 89 in-lbs/Cycle to 274 in-lbs/Cycle
Stroke 0.32 in to 0.47 in

Soft damping, but enormous capacity: The range of 'soft contact' absorbers SC²25 to SC²190 extends from thread size M10 to M14 and covers effective weight ranges of 2.2 to 3,400 lbs (1 kg to 1,550 kg). All models are characterised by high energy absorption and they also unite the piston tube technology with the diaphragm seal perfected by ACE. This enables direct installation as end position damping in pneumatic cylinders at 72 to 102 psi (5 to 7 bar) or applications where deceleration needs to take place close to the pivot point.

They are maintenance-free, have an integrated positive stop and are mountable in any position. The option of a side load adapter allows impact angles of up to 25°. They offer soft contact deceleration where initial impact reaction forces are very low, with the advantages of self-compensation to react to changing energy conditions, without adjustment.

Thanks to their robust design and their durability, these miniature shock absorbers can be used for a wide range of applications. Designers mainly use them for pick and place systems, pneumatic rotary modules and in automation applications.

Technical Data

Energy capacity 89 in-lbs/Cycle to 274 in-lbs/Cycle

Stroke 0.32 in to 0.47 in

Impact velocity range 0.29 ft/sec to 18.6 ft/sec. Other speeds on request.

Operating temperature range 32 °F to 150 °F

Mounting In any position

Positive stop Integrated

Material Outer body, Accessories: Steel corrosion-resistant coating; Piston rod: Hardened stainless steel; Rolling diaphragm: SC²190: EPDM; Stretch diaphragm: SC²25 and SC²75: Nitrile

Damping medium Oil, temperature stable

Application field Linear slides, Pneumatic cylinders, Swivel units, Handling modules, Machines and plants, Finishing and processing centers, Measuring tables, Tool machines, Locking systems


If precise end position data is required consider use of a stop collar.

Safety information

External materials in the surrounding area can attack the rolling and stretch seals and lead to a shorter service life. Please contact ACE for appropriate solution suggestions.

On request

Increased corrosion protection. Special finishes.


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