This model is discontinued
AirTAC has phased out the ACP series. You can still order this code here: we ship the current replacement ACED25X45S, 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 ACPD25X45S is a double acting, double rod DIN-standard tight/compact air cylinder with a Ø25mm bore and 45mm stroke, M5×0.8 air ports and a hard-anodized aluminium body. This model is discontinued — the current-production replacement is the ACED25X45S (ISO 21287 ACE), in the same bore, stroke and force class.
A double acting compact cylinder with a rod leaving both covers, the ACPD25X45S pushes and pulls with identical output: 206.2 N at 0.5 MPa and 288.6 N at 0.7 MPa in each direction, because both strokes work on the rod-side area. The 25 mm bore carries a 10 mm through-rod with a female M6x1.0 thread, and the fixed TPU bumper at each end takes the end-of-travel shock. This model is discontinued; the current-production direct is the ISO 21287 ACED25X45.
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, guarding and gantry axes. The through-rod resists rotation and side load and gives a symmetric mount, so the rear rod can carry a sensor flag while the front rod does the work. With the -S magnet this unit carries, CMSE or DMSE reed and solid-state switches mount directly on the body.
| Model | Airtac ACPD Double Rod Compact Cylinder ACPD25X45S |
|---|---|
| Series | ACPD DIN compact cylinder (discontinued) |
| Replacement | ACED25X45S |
| Bore size | Ø25 mm |
| Stroke | 45 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 ACED25X45S (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. |
| ×45 | 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 equal 206.2 N output in both directions lets one ACPD25X45S clamp a machined aluminium bracket on the forward stroke and release the fixture on the return, with the 45 mm stroke clearing the part for loading.
On a small electronics assembly slide, the rear rod carries a switch flag while the -S magnet feeds CMSE / DMSE end-position signals, and the through-rod keeps the 30-500 mm/s motion free of rotation.
Size this bore by load, not by habit: the 20 mm bore gives 117.8 N at 0.5 MPa and the 32 mm bore gives 345.6 N, so pick the 25 mm when your clamping or positioning force sits between those figures. Remember it is a through-rod on both ends, so leave clearance behind the cylinder for the rear rod. Like any plain double-rod cylinder it will drift when air is lost - for a held load add a rod lock or pilot check valve. Foot (LB) and flange (FA/FB) mounts plus I/Y rod knuckles bolt to the face, and the -S magnet on this model accepts CMSE / DMSE switches. Before ordering, confirm the ISO 21287 mounting dimensions of the ACED25X45 replacement against your fixture.
Replacement checklist
Yes - it is a double-rod cylinder, so output is equal both ways because both strokes use the rod-side area. At 0.5 MPa you get 206.2 N per direction, at 0.7 MPa you get 288.6 N per direction, and the maximum at 1.0 MPa is 42.0 kgf. Operating pressure is 0.15-1.0 MPa (22-145 psi) with a 1.5 MPa (215 psi) proof pressure, speed range 30-500 mm/s, and the air must be filtered to 40 um.
Order the ACED25X45, the current-production ISO 21287 successor: swap the P for an E and you get the same 25 mm bore, 45 mm stroke and force class in a matching short body. The ACP is DIN-standard, so confirm the ISO 21287 mounting dimensions against your fixture before swapping. The ACED keeps the FA/FB flange and LB foot mounting family, and the optional -S magnet code still enables CMSE / DMSE switches.
Send us the quantity and destination. We confirm price, stock and lead time on the ACED25X45S replacement — usually within 7-8 hours.