This model is discontinued
AirTAC has phased out the ACP series. You can still order this code here: we ship the current replacement ACED25X120S, 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 ACPD Double Rod Compact Cylinder ACPD25X120S is a double acting, double rod DIN-standard tight/compact air cylinder with a Ø25mm 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 ACED25X120S (ISO 21287 ACE), in the same bore, stroke and force class.
The ACPD25X120S is a double acting, double-rod compact cylinder in the AirTAC ACP DIN-standard family, now discontinued. A 25 mm piston with a 120 mm stroke drives a 10 mm rod out of BOTH covers, so the through-rod resists rotation and side load and gives a symmetric mount, and the back-end rod can carry a sensor flag. Because both strokes use the rod-side area, output is equal in each direction: 206.2 N at 0.5 MPa and 288.6 N at 0.7 MPa, with a fixed TPU bumper at both ends. The hard-anodized aluminium body with an S45C hard-chrome rod runs on air filtered to 40 um at 0.15-1.0 MPa (22-145 psi), 30-500 mm/s.
As a short-body ISO 21287-class design, it saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into tight jigs, guards and gantries. The S in the code means the optional -S magnet is fitted, so CMSE / DMSE reed or solid-state switches can be mounted for position feedback. This model is discontinued: the current-production direct is ACED25X120, so confirm ISO 21287 mounting dimensions before swapping.
| Model | Airtac ACPD Double Rod Compact Cylinder ACPD25X120S |
|---|---|
| Series | ACPD DIN compact cylinder (discontinued) |
| Replacement | ACED25X120S |
| Bore size | Ø25 mm |
| Stroke | 120 mm |
| Acting type | Double acting, double rod |
| 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 ACED25X120S (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 | Force (both ways) |
|---|---|
| 0.5 MPa | 206 N |
| 0.7 MPa | 289 N |
| Max (@1.0 MPa) | 42 kgf |
Double-rod: a rod exits both covers, so output force is equal in both directions (rod-side area used).
| ACPD | DIN compact cylinder (double-rod, discontinued). |
|---|---|
| 25 | 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 120 mm stroke and symmetric through-rod let a 25 mm double-rod cylinder clamp and re-present small aluminum housings on a CNC gantry, with about 206.2 N available in both directions at 0.5 MPa.
With the -S magnet fitted, CMSE / DMSE switches on the barrel confirm end positions of a 120 mm push-verify station for automotive connector assemblies, cycling at 30-500 mm/s.
Equal 206.2 N output both ways suits a bidirectional reject arm on a bottling conveyor, where the short ISO 21287-class body fits under the guard rail and the back rod carries a flag.
At 25 mm bore the ACPD25X120S delivers 206.2 N both ways at 0.5 MPa. If your load needs less, the ACPD20X120S gives 117.8 N in the same short body; if you need more, step up to the ACPD32X120S at 345.6 N. Note that a plain double-rod cylinder drifts when air is lost - for a held load add a rod lock or pilot check. Match FA/FB flange or LB foot mounting to your fixture, and keep the -S magnet (fitted here) paired with CMSE / DMSE switches. Order the ACED25X120 as the current replacement and verify ISO 21287 mounting dimensions.
Replacement checklist
It is a double-rod cylinder, so force is equal both ways: 206.2 N at 0.5 MPa and 288.6 N at 0.7 MPa, each direction, since both strokes use the rod-side area. At 1.0 MPa the bore reaches a maximum of 42.0 kgf. Operating range is 0.15-1.0 MPa (22-145 psi) with 1.5 MPa (215 psi) proof pressure.
No - the ACPD family is discontinued. The current-production direct is ACED25X120 (swap the P for an E), an ISO 21287 compact cylinder in the same bore, stroke and force class. Confirm the ISO 21287 mounting dimensions before swapping, because the ACP follows the older DIN-standard footprint. This unit carries the optional -S magnet for CMSE / DMSE switches.
Send us the quantity and destination. We confirm price, stock and lead time on the ACED25X120S replacement — usually within 7-8 hours.