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Reliable protection from fluids and particulate

Self-Compensating, Rolling Diaphragm Technology, TPU Bellow
Energy capacity 1,200 in-lbs/cycle
Stroke 1.00 inch

Hermetically sealed: The shock absorbers from the ACE Protection family PMCN have a compact, perfectly sealed cap as a special feature.

This protection bellows, made of TPU (thermoplastic polyurethane), safely encapsulates the proven ACE rolling diaphragm from the outside environment. Aggressive cutting, lubricating and cleaning agents don't stand a chance and the function of the maintenance-free, ready-to-install shock absorber is retained. They are also available in full stainless steel.

The PMCN range is a good alternative to the SP type air bleed collar if no compressed air is available on the machine or system.

Reliable protection against aggressive environments including fluids and abrasives, these self-compensating miniature shock absorbers are the first choice where conventional dampers wear out too quickly. Use them in harsh environments where cutting, cooling or cleaning agents can attack.
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Self-Compensating, Rolling Diaphragm Technology, TPU Bellow


Stroke1.00 inch

Technical Data

Energy capacity 1,200 in-lbs/cycle

Energy capacity 600,000 in-lbs/h

Effective weight min. 20 lbs

Effective weight max. 300 lbs

Return Force min. 1.80 lbs

Return Force max. 20.23 lbs

Return Time 0.6 s

Side Load Angle max. 2 °

Impact velocity range 0.22 ft/sec to 19.7 ft/sec. Other speeds on request.

Operating temperature range 32 °F to 150 °F

Mounting In any position

Positive stop Integrated

Material Outer body: Steel corrosion-resistant coating; Main bearing: Plastic ; Piston rod: Hardened stainless steel (1.4125, AISI 440C) ; Bellow: TPU, steel insert: Stainless steel (1.4404/1.4571, AISI 316L/316Ti); Rolling diaphragm: EPDM

Damping medium Oil, temperature stable

Application field Finishing and processing centers, Clean room areas, Pharmaceutical industry, Medical technology, Food industry, Linear slides, Pneumatic cylinders, machines and plants


Final preliminary test must be done on the application.

Safety information

Do not paint the shock absorbers due to heat emission.

On request

Special accessories available on request.

General information

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