This model is discontinued
AirTAC has phased out the ACP series. You can still order this code here: we ship the current replacement ACED25X175SB, 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 ACPD25X175SB 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 ACED25X175SB (ISO 21287 ACE), in the same bore, stroke and force class.
Double acting with a rod leaving both covers, the ACPD25X175SB pushes and pulls with identical force because each stroke works on the rod-side area: 206.2 N at 0.5 MPa and 288.6 N at 0.7 MPa in either direction. 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 made to order. A male rod thread (B code) and the optional -S magnet for CMSE / DMSE switches are fitted on this version.
The short ISO 21287-class body saves roughly 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into tight fixtures and guarding. A fixed TPU bumper sits at each end, and the rear rod can carry a sensor flag. Note: this model is discontinued; the current direct is ACED25X175 - confirm ISO 21287 mounting dimensions before swapping.
| Model | Airtac ACPD Double Rod Compact Cylinder ACPD25X175SB |
|---|---|
| Series | ACPD DIN compact cylinder (discontinued) |
| Replacement | ACED25X175SB |
| 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 ACED25X175SB (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 double rod carries guide blocks on both ends of a 175 mm shuttle stroke on a small parts conveyor, delivering 206.2 N in each direction at 0.5 MPa.
With the -S magnet fitted, CMSE or DMSE switches read end-of-stroke on a bench fixture, while the rear rod drives a second indicator.
The short body fits inside a tight machining-cell guard where a full-length profile cylinder will not, ejecting finished bushings from a fixture.
Size between bores: ACPD20X175 gives 117.8 N at 0.5 MPa, while ACPD32X175 reaches 345.6 N - choose the 25 mm when your load sits between those. The through-rod resists rotation and side load and gives a symmetric mount. Remember the piston drifts when air is lost, so add a rod lock or pilot check for held loads. This unit is discontinued; order ACED25X175 as the current-production equivalent and verify the mounting footprint.
Replacement checklist
Because a rod exits both covers, output is equal both ways: 206.2 N at 0.5 MPa and 288.6 N at 0.7 MPa, with a peak of 42.0 kgf at 1.0 MPa. Operating range is 0.15-1.0 MPa (22-145 psi), proof 1.5 MPa (215 psi), speed 30-500 mm/s, temperature -20 to +70 C, air filtered to 40 um.
The 150 mm standard limit for the 25 mm bore is exceeded here, so the 175 mm stroke is a made-to-order build. The ACPD family is discontinued; ACED25X175 is the current ISO 21287 direct with the same bore, stroke and force class - confirm its mounting dimensions before swapping, since the ACP follows the older DIN-standard pattern.
Send us the quantity and destination. We confirm price, stock and lead time on the ACED25X175SB replacement — usually within 7-8 hours.