This model is discontinued
AirTAC has phased out the ACP series. You can still order this code here: we ship the current replacement ACE12X35S, the same code under the new prefix. The ACE replacement is a current-production ISO 21287 compact cylinder in the same bore, stroke and force class, with a matching short body and the same mounting-accessory family, so it fits the same envelope. Confirm mounting-interface dimensions against the ACE datasheet before ordering.

The AirTAC ACP Compact Cylinder ACP12X35S is a double acting DIN-standard tight/compact air cylinder with a Ø12mm bore and 35mm stroke, M5×0.8 air ports and a hard-anodized aluminium body. This model is discontinued — the current-production replacement is the ACE12X35S (ISO 21287 ACE), in the same bore, stroke and force class.
The ACP12X35S is a double acting compact cylinder in the DIN-standard ACP series, with a 12 mm bore, 35 mm stroke and a 6 mm rod. At 0.5 MPa it pushes 56.5 N and pulls 42.4 N, rising to 79.2 N push at 0.7 MPa, with a theoretical peak of 11.5 kgf at 1.0 MPa. The S in the code means the optional -S magnet is fitted, so CMSE or DMSE reed and solid-state switches can be mounted directly on the hard-anodized aluminium body. The short ISO 21287-class body saves roughly 50% of the mounting length of an ISO 15552 profile cylinder, which is why it suits tight jigs and slim guarding where a full-length body will not fit.
The rod end carries a female M3x0.5 thread, the port is M5x0.8, and a fixed TPU bumper sits at both ends. Note that this model is discontinued: the current-production direct is the ACE12X35, so confirm the ISO 21287 mounting dimensions before swapping. Operating window is 0.15-1.0 MPa (22-145 psi), speed 30-500 mm/s, temperature -20 to +70 C.
| Model | Airtac ACP Compact Cylinder ACP12X35S |
|---|---|
| Series | ACP DIN compact cylinder (discontinued) |
| Replacement | ACE12X35S |
| Bore size | Ø12 mm |
| Stroke | 35 mm |
| Acting type | Double acting |
| Port size | M5×0.8 |
| Rod thread | M3×0.5 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 500 mm/s |
| Cushion | Fixed bumper (both ends) |
| Max standard stroke | Up to 50 mm |
Specifications follow the official AirTAC ACP datasheet (now discontinued). The ACE12X35S (ISO 21287) carries the same bore/stroke/force class; confirm mounting-interface dimensions against the ACE datasheet before installation. Rod type: female thread (blank) or male thread (B). Thread options: PT (blank) / G.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 57 N | 42 N |
| 0.7 MPa | 79 N | 59 N |
| Max (@1.0 MPa) | 12 kgf | |
The ACE12X35S produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
| ACP | DIN compact cylinder (double-acting, discontinued). |
|---|---|
| 12 | Bore size in mm. |
| ×35 | Stroke length in mm. |
| S | Optional built-in magnet for sensor position sensing (omit for no magnet). |
| B | Rod type: B = male thread; blank = female thread. |
Replacement mapping (swap P for E): ACP→ACE, ASP→ASE, ATP→ATE, ACPD→ACED, ACPJ→ACEJ. ACP-family: ACP (double acting), ASP / ATP (single acting push / pull), ACPD (double rod), ACPJ (double rod, adjustable stroke).
Ejects finished circuit boards from a test nest on an SMT line; the fitted magnet and a CMSE switch confirm each ejection cycle at 30-500 mm/s.
The 56.5 N push at 0.5 MPa holds small vials or slides in an analytical instrument fixture, with the 35 mm stroke clearing the nest for loading.
Kicks tiny turned parts off a machining arbor into a chute; about 3 kg of vertical lift equivalent covers light component weights with margin.
For a 35 mm stroke at this force level, compare the 16 mm bore (100.5 N push at 0.5 MPa) if the load is heavier, or drop to the smallest frame size if 56.5 N is ample. Because the piston drifts when air is lost, add a rod lock or pilot check valve if the load must stay put. The fitted -S magnet pairs with CMSE / DMSE switches for end-of-stroke sensing, and FA/FB flange, LB foot or CA/CB clevis mounts bolt to the ISO 21287 face. Order the ACE12X35 as the current replacement.
Replacement checklist
Push is 56.5 N and pull 42.4 N at 0.5 MPa; at 0.7 MPa push rises to 79.2 N and pull to 59.4 N, with a theoretical maximum of 11.5 kgf at 1.0 MPa. It is double acting with a 12 mm bore, 35 mm stroke, 6 mm rod, M5x0.8 port and female M3x0.5 rod thread, running on 0.15-1.0 MPa (22-145 psi) filtered air at 30-500 mm/s.
Order the ACE12X35, the current-production ISO 21287 successor: swap the P for an E and you get the same bore, stroke and force class with a matching short body and mounting family. Confirm the ISO 21287 mounting dimensions against your fixture first, since the ACP was built to a DIN-standard footprint.
Send us the quantity and destination. We confirm price, stock and lead time on the ACE12X35S replacement — usually within 7-8 hours.