This model is discontinued
AirTAC has phased out the ACP series. You can still order this code here: we ship the current replacement ACE12X20, 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 ACP12X20 is a double acting DIN-standard tight/compact air cylinder with a Ø12mm bore and 20mm stroke, M5×0.8 air ports and a hard-anodized aluminium body. This model is discontinued — the current-production replacement is the ACE12X20 (ISO 21287 ACE), in the same bore, stroke and force class.
A double acting compact cylinder in the DIN-standard ACP series, the ACP12X20 pairs a 12 mm bore with a 20 mm stroke and delivers 56.5 N of push force and 42.4 N of pull force at 0.5 MPa. The hard-anodized aluminium body with threaded aluminium covers keeps the mounting length about 50% shorter than an ISO 15552 profile cylinder, so it slots into slim fixtures and small automation modules. A fixed TPU bumper sits at both ends of the stroke.
At 0.5 MPa, plan on roughly 33 N (about 3 kg of vertical lift) of usable work rather than the full 56.5 N rating, which leaves margin for friction and side loads. The 6 mm S45C hard-chrome rod ends in a female M3x0.5 thread, and the M5x0.8 ports suit small-diameter tubing. This model is discontinued; the current-production replacement is the ISO 21287 ACE12X20, so confirm mounting dimensions before swapping.
| Model | Airtac ACP Compact Cylinder ACP12X20 |
|---|---|
| Series | ACP DIN compact cylinder (discontinued) |
| Replacement | ACE12X20 |
| Bore size | Ø12 mm |
| Stroke | 20 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 ACE12X20 (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 ACE12X20 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. |
| ×20 | 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 small machined pins or pressed inserts from a fixture nest, where the 56.5 N push at 0.5 MPa is ample and the 20 mm stroke clears a shallow pocket.
With the optional -S magnet and a CMSE or DMSE switch, the short body acts as a compact confirm-extend probe on an electronics assembly line.
Presses battery covers or connector clips on a small bench jig, using about 33 N of practical working force at 0.5 MPa for repeatable low-load joining.
For a 20 mm stroke at this force level, 56.5 N push at 0.5 MPa covers light clamping and part present checks; step up to the 16 mm bore (100.5 N) if the load is heavier, or drop to a smaller frame if space is tighter still. A plain cylinder of this type drifts when air is lost, so add a rod lock or pilot check valve if the load must stay put. Order the -S code if you need the optional magnet for CMSE / DMSE switches; without it no sensor can be fitted. The discontinued ACP12X20 is replaced by the ACE12X20 in the same bore, stroke and force class.
Replacement checklist
At 0.5 MPa it pushes 56.5 N and pulls 42.4 N; at 0.7 MPa those rise to 79.2 N and 59.4 N, with a theoretical maximum of 11.5 kgf at 1.0 MPa. Operating pressure is 0.15-1.0 MPa (22-145 psi) and speed is 30-500 mm/s.
Order the ACE12X20, the ISO 21287 successor made by swapping the P for an E. It matches the same 12 mm bore, 20 mm stroke and force class with a similarly short body, but because the ACP was DIN-standard, confirm the ISO 21287 mounting dimensions and FA/FB flange, LB foot or CA/CB clevis interfaces before committing the swap.
Send us the quantity and destination. We confirm price, stock and lead time on the ACE12X20 replacement — usually within 7-8 hours.