This model is discontinued
AirTAC has phased out the ACP series. You can still order this code here: we ship the current replacement ACED25X35S, 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 ACPD25X35S is a double acting, double rod DIN-standard tight/compact air cylinder with a Ø25mm bore and 35mm stroke, M5×0.8 air ports and a hard-anodized aluminium body. This model is discontinued — the current-production replacement is the ACED25X35S (ISO 21287 ACE), in the same bore, stroke and force class.
This ACPD25X35S is a double acting compact cylinder with a rod leaving both covers, so the 25 mm bore delivers 206.2 N at 0.5 MPa and 288.6 N at 0.7 MPa in each direction - both strokes work on the rod-side area. The 10 mm through-rod resists rotation and side load, and the rear rod can carry a sensor flag while the front rod drives the tool. A fixed TPU bumper sits at each end, and speed spans 30-500 mm/s.
The hard-anodized aluminium body is an ISO 21287 short build that saves roughly 50% of the mounting length of an ISO 15552 profile cylinder, which is why it suits tight jigs and gantries. Note that this model is discontinued: the current-production direct is the ACED25X35, so confirm ISO 21287 mounting dimensions before swapping. The S in the code means the optional -S magnet is fitted, so CMSE / DMSE switches can be added.
| Model | Airtac ACPD Double Rod Compact Cylinder ACPD25X35S |
|---|---|
| Series | ACPD DIN compact cylinder (discontinued) |
| Replacement | ACED25X35S |
| Bore size | Ø25 mm |
| Stroke | 35 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 ACED25X35S (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. |
| ×35 | 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 lets a jig clamp a machined aluminium bracket on the front rod while the rear rod trips a CMSE switch confirming full clamp - 206.2 N per side at 0.5 MPa.
In a 35 mm stroke electronics assembly gantry, the fitted -S magnet and DMSE switches report extend and retract, and the symmetric double-rod mount resists side load on small PCB trays.
A carton rejector slide needs equal force both ways; the 288.6 N at 0.7 MPa in each direction and fixed TPU bumpers at both ends suit the rapid 30-500 mm/s cycling.
At 206.2 N per side at 0.5 MPa, this 25 mm unit sits between the 20 mm bore (117.8 N) and the 32 mm bore (345.6 N) - step up to 32 mm if your fixture needs more margin, or down to 20 mm for lighter pick-and-place work. Remember the piston drifts when air is lost; add a rod lock or pilot check if the load must stay put. FA/FB flange and LB foot mountings bolt to the ISO 21287 face, and the fitted -S magnet accepts CMSE / DMSE switches. Since the ACPD line is discontinued, order the ACED25X35 as the current replacement and verify mounting dimensions.
Replacement checklist
Yes - the double-rod design means both strokes use the rod-side area, so force is equal each way: 206.2 N at 0.5 MPa, 288.6 N at 0.7 MPa, and a maximum of 42.0 kgf at 1.0 MPa. Operating pressure is 0.15-1.0 MPa (22-145 psi) with a 1.5 MPa (215 psi) proof rating, and speed runs 30-500 mm/s.
AirTAC no longer produces the ACPD series. The current direct is the ACED25X35 (swap the P for an E), which matches the same 25 mm bore, 35 mm stroke and force class in the ISO 21287 family - confirm mounting dimensions before swapping since the ACP is DIN-standard. On this S-coded unit the optional -S magnet is fitted, so CMSE / DMSE reed or solid-state switches mount directly on the body.
Send us the quantity and destination. We confirm price, stock and lead time on the ACED25X35S replacement — usually within 7-8 hours.