This model is discontinued
AirTAC has phased out the ACP series. You can still order this code here: we ship the current replacement ACED25X175S, 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 ACPD25X175S is a double acting, double rod DIN-standard tight/compact air cylinder with a Ø25mm bore and 175mm stroke, M5×0.8 air ports and a hard-anodized aluminium body. This model is discontinued — the current-production replacement is the ACED25X175S (ISO 21287 ACE), in the same bore, stroke and force class.
Double acting with a rod leaving both covers, the ACPD25X175S 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 drives a 10 mm through-rod over a 175 mm stroke, which is beyond the 150 mm standard limit for this bore, so it is a made-to-order length. The -S code on this model means the magnet is fitted, so CMSE or DMSE reed and solid-state switches can be clipped on for end-of-travel sensing.
The short ISO 21287-class body saves roughly 50% of the mounting length of an ISO 15552 profile cylinder, which is why it suits deep slides and narrow gantry rails. A hard-anodized aluminium body carries an S45C hard-chrome rod, fixed TPU bumpers sit at both ends, and speed runs 30-500 mm/s at 0.15-1.0 MPa (22-145 psi). Note this model is discontinued: the current direct is ACED25X175, same bore, stroke and force class, so confirm the ISO 21287 mounting dimensions before swapping. As a rule of thumb, plan on about 124 N (roughly 12 kg of vertical lift with margin) of real work at 0.5 MPa rather than the full 206.2 N rating.
| Model | Airtac ACPD Double Rod Compact Cylinder ACPD25X175S |
|---|---|
| Series | ACPD DIN compact cylinder (discontinued) |
| Replacement | ACED25X175S |
| Bore size | Ø25 mm |
| Stroke | 175 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 ACED25X175S (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. |
| ×175 | 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 through-rod drives a sliding probe carrier on a PCB test bench, pushing and pulling with equal 206.2 N force so return strokes need no derating, with CMSE switches reporting both end positions.
On a small stamping press feed, the rear rod ejects finished bushings while the front rod retracts the pusher, both directions delivering 288.6 N at 0.7 MPa over the long 175 mm travel.
A pick-and-place gantry uses the back-end rod as a mounting point for a sensor flag while the front rod carries the gripper, the -S magnet and DMSE switches confirming mid-stroke and end positions.
At 206.2 N per side at 0.5 MPa, this 25 mm bore suits light clamping and symmetric push-pull fixtures. If your load needs under 117.8 N, the 20 mm bore costs less; if it needs over 206.2 N, step up to the 32 mm bore at 345.6 N. The through-rod resists rotation and side load, and the rear rod can carry a sensor flag, while the fitted -S magnet accepts CMSE / DMSE switches. FA/FB flange or LB foot mounts bolt to the standard face. Remember the piston drifts when air is lost, so add a rod lock or pilot check for a held load. Order ACED25X175 as the current-production replacement and verify ISO 21287 mounting dimensions.
Replacement checklist
Because a rod exits both covers, force is equal both ways: 206.2 N at 0.5 MPa and 288.6 N at 0.7 MPa on extend and retract alike, since both strokes use the rod-side area. At 1.0 MPa the ceiling is 42.0 kgf. Operating range is 0.15-1.0 MPa (22-145 psi) with 1.5 MPa (215 psi) proof pressure, speed 30-500 mm/s. The 175 mm stroke is non-standard for this bore (150 mm max standard), so it is made to order.
No, the ACPD family is discontinued. The current-production direct is ACED25X175, the ISO 21287 successor with the same 25 mm bore, 175 mm stroke and force class. Before swapping, confirm the ISO 21287 mounting dimensions against your fixture, since the ACP was built to a DIN-standard footprint. This -S version carries the optional magnet, so CMSE / DMSE switches work on the replacement only if you order its -S code too.
Send us the quantity and destination. We confirm price, stock and lead time on the ACED25X175S replacement — usually within 7-8 hours.