This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is ACE25X5S — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the ACE25X5S in place of this model. 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 Airtac ACP Compact Cylinder ACP25X5S is a double acting DIN-standard tight/compact air cylinder with a Ø25mm bore and 5mm stroke, M5×0.8 air ports and a hard-anodized aluminium body. This model is discontinued — the current-production replacement is the ACE25X5S (ISO 21287 ACE), in the same bore, stroke and force class.
Double acting on both strokes, the ACP25X5S is AirTAC's DIN-standard compact cylinder with a 25 mm bore and a very short 5 mm stroke, ideal for clamping or ejecting where travel is minimal. At 0.5 MPa it pushes 245.4 N and pulls 206.2 N, rising to 343.6 N push at 0.7 MPa, with a theoretical ceiling of 50.1 kgf at 1.0 MPa. The hard-anodized aluminium body carries a fixed TPU bumper at each end, and 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 tube.
Because the short ISO 21287-class body saves roughly 50% of the mounting length of an ISO 15552 profile cylinder, it slots into tight fixtures, guarding and gantries where a full-length body will not reach. In practice, plan on about 147 N of usable work at 0.5 MPa, which corresponds to lifting roughly 7 kg vertically once a 2:1 margin is applied. Note that this model is discontinued: the current-production drop-in is the ACE25X5, so confirm ISO 21287 mounting dimensions before swapping.
| Model | Airtac ACP Compact Cylinder ACP25X5S |
|---|---|
| Series | ACP DIN compact cylinder (discontinued) |
| Replacement | ACE25X5S |
| Bore size | Ø25 mm |
| Stroke | 5 mm |
| Acting type | Double acting |
| Port size | M5×0.8 |
| Rod thread | M6×1.0 |
| 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 150 mm |
Specifications follow the official AirTAC ACP datasheet (now discontinued). The ACE25X5S (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 | 245 N | 206 N |
| 0.7 MPa | 344 N | 289 N |
| Max (@1.0 MPa) | 50 kgf | |
The ACE25X5S 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). |
|---|---|
| 25 | Bore size in mm. |
| ×5 | 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 (adjustable stroke).
A 5 mm stroke is enough to seat a hold-down clamp over a circuit board in an electronics test jig, with the fitted -S magnet feeding end-of-stroke signals to the PLC via a DMSE switch.
On a packaging line, a short 25 mm bore push of 245.4 N at 0.5 MPa flips carton tabs or diverts small packs at the conveyor without needing a long-body cylinder.
Laboratory and pharma sample handlers use the compact 25 mm body to advance vials one position in tight analyser frames where an ISO 15552 profile cylinder simply will not fit.
At 245.4 N push at 0.5 MPa, the 25 mm bore suits light clamping and short eject moves; step down to the 20 mm bore (157.1 N) for lighter loads or up to the 32 mm bore (402.1 N) when more force is needed. The 5 mm stroke is well inside the 150 mm maximum standard stroke for this bore. The female M6x1.0 rod thread and M5x0.8 ports keep plumbing simple, and FA/FB flange, LB foot or CA/CB clevis mounting bolts straight onto standard fixtures. Remember the piston drifts when air is lost, so add a rod lock or pilot check valve for held loads. For new builds, order the ACE25X5 instead, as this ACP version is discontinued.
Replacement checklist
At 0.5 MPa it pushes 245.4 N and pulls 206.2 N; at 0.7 MPa it pushes 343.6 N and pulls 288.6 N, with a theoretical maximum of 50.1 kgf at 1.0 MPa. Operating pressure is 0.15-1.0 MPa (22-145 psi) and speed runs 30-500 mm/s. Because the S code is in this model, the optional -S magnet is fitted, so CMSE or DMSE reed and solid-state switches mount directly on the body for position feedback.
Order the ACE25X5, the current-production ISO 21287 successor: swap the P for an E and you get the same 25 mm bore, 5 mm stroke and force class in a short-body compact cylinder. Before swapping, confirm the ISO 21287 mounting dimensions against your fixture, since the ACP was built to the older DIN-standard footprint.
Send us the quantity and destination. We confirm price, stock and lead time on the ACE25X5S replacement — usually within 7-8 hours.