This model is discontinued
AirTAC has phased out the ACP series. You can still order this code here: we ship the current replacement ACE12X120S, 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 ACP12X120S is a double acting DIN-standard tight/compact air cylinder with a Ø12mm bore and 120mm stroke, M5×0.8 air ports and a hard-anodized aluminium body. This model is discontinued — the current-production replacement is the ACE12X120S (ISO 21287 ACE), in the same bore, stroke and force class.
A double acting compact cylinder in the DIN-standard ACP series, the ACP12X120S pairs a 12 mm bore with a 120 mm stroke and carries the optional -S magnet, so CMSE or DMSE reed and solid-state switches can be mounted for end-of-stroke sensing. At 0.5 MPa it pushes 56.5 N and pulls 42.4 N; at 0.7 MPa push rises to 79.2 N, with a theoretical maximum of 11.5 kgf at 1.0 MPa. Air supply is 0.15-1.0 MPa (22-145 psi), filtered to 40 um, with rod speed between 30 and 500 mm/s.
The short ISO 21287-class body saves roughly 50% of the mounting length of an ISO 15552 profile cylinder, which is why this bore suits slim slides and guarded assemblies. Note the 120 mm stroke exceeds the 50 mm standard for this bore, so it is made to order. This model is discontinued; the current-production replacement is ACE12X120, and you should confirm ISO 21287 mounting dimensions before swapping.
| Model | Airtac ACP Compact Cylinder ACP12X120S |
|---|---|
| Series | ACP DIN compact cylinder (discontinued) |
| Replacement | ACE12X120S |
| Bore size | Ø12 mm |
| Stroke | 120 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 ACE12X120S (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 ACE12X120S 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. |
| ×120 | 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).
The fitted -S magnet feeds CMSE or DMSE switch signals on small pick-and-place slides where the 56.5 N push at 0.5 MPa is ample and the 120 mm reach clears a guarding wall.
Pushes vials or test cards off a fixture at up to 79.2 N at 0.7 MPa; the short body tucks under a benchtop frame that a full-length profile cylinder cannot enter.
At 12 mm bore this is the smallest force class in the range: 56.5 N push at 0.5 MPa. Step up to 16 mm for 100.5 N or drop to a direct ACE12X120 if the compact footprint already fits. The 120 mm stroke is non-standard for this bore (50 mm max standard), so expect a made-to-order build. The fitted -S magnet works with CMSE / DMSE switches; the female M3x0.5 rod thread takes I or Y knuckles from the FA/FB, LB, CA/CB, CR, SDB and FTC mounting family. A plain cylinder drifts when air is lost - add a rod lock or pilot check valve if the load must stay put. Order ACE12X120 as the current direct and verify ISO 21287 mounting dimensions.
Replacement checklist
Push 56.5 N and pull 42.4 N at 0.5 MPa; push 79.2 N and pull 59.4 N at 0.7 MPa; theoretical maximum 11.5 kgf at 1.0 MPa. It is double acting with a 12 mm bore, 120 mm made-to-order stroke, 6 mm rod with female M3x0.5 thread, M5x0.8 port, 0.15-1.0 MPa (22-145 psi) operating pressure, 30-500 mm/s speed and fixed TPU bumpers at both ends.
Order ACE12X120, the current-production ISO 21287 successor: swap the P for an E and you get the same bore, stroke and force class in a matching short body. Because the ACP was DIN-standard, confirm the ISO 21287 mounting dimensions against your fixture before the swap. The ACE also accepts the same FA/FB, LB, CA/CB, CR, SDB and FTC brackets.
Send us the quantity and destination. We confirm price, stock and lead time on the ACE12X120S replacement — usually within 7-8 hours.