This model is discontinued
AirTAC has phased out the ACP series. You can still order this code here: we ship the current replacement ACED20X25S, 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 ACPD20X25S is a double acting, double rod DIN-standard tight/compact air cylinder with a Ø20mm bore and 25mm stroke, M5×0.8 air ports and a hard-anodized aluminium body. This model is discontinued — the current-production replacement is the ACED20X25S (ISO 21287 ACE), in the same bore, stroke and force class.
Double acting with a rod leaving both covers, the ACPD20X25S pushes and pulls with identical force because each stroke works on the rod-side area: 117.8 N at 0.5 MPa and 164.9 N at 0.7 MPa in either direction. The 20 mm bore carries a 10 mm through-rod with an M6x1.0 female thread, M5x0.8 ports and a fixed TPU bumper at each end. Because the rear rod sticks out, it doubles as a sensor flag carrier or a symmetric second mount, and the through-rod resists rotation and light side load better than a blind-end design.
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. The -S code on this model means the magnet is fitted, so CMSE or DMSE reed and solid-state switches mount directly on the hard-anodized aluminium body. Note that this model is discontinued: the current-production direct is the ACED20X25, and buyers should confirm ISO 21287 mounting dimensions before swapping.
| Model | Airtac ACPD Double Rod Compact Cylinder ACPD20X25S |
|---|---|
| Series | ACPD DIN compact cylinder (discontinued) |
| Replacement | ACED20X25S |
| Bore size | Ø20 mm |
| Stroke | 25 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 100 mm |
Specifications follow the official AirTAC ACP datasheet (now discontinued). The ACED20X25S (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 | 118 N |
| 0.7 MPa | 165 N |
| Max (@1.0 MPa) | 24 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). |
|---|---|
| 20 | Bore size in mm. |
| ×25 | 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 117.8 N push and pull at 0.5 MPa suits a 25 mm shuttle that must return a sample tray with the same force in both directions.
With the -S magnet fitted, a CMSE or DMSE switch on the body confirms end positions of a short-stroke clamp inside a compact jig.
The through-rod gives a symmetric mount for a small pusher arm that deflects cartons on a bottling conveyor at 30-500 mm/s.
Size between neighbours: the 16 mm bore gives 75.4 N at 0.5 MPa, while the 25 mm bore reaches 206.2 N, so pick the 20 mm when 117.8 N per direction covers the job with margin. Remember that a plain double-rod cylinder drifts when air is lost - for a held load add a rod lock or pilot check valve. This unit already carries the optional -S magnet for CMSE / DMSE switches, and FA/FB flange or LB foot mounts bolt to the ISO 21287 face. Since the ACPD is discontinued, order the ACED20X25 as the current replacement and verify mounting dimensions against the datasheet.
Replacement checklist
Because it is a double-rod cylinder, force is equal both ways (rod-side area on each stroke): 117.8 N at 0.5 MPa and 164.9 N at 0.7 MPa, with a maximum of 24.0 kgf at 1.0 MPa. Operating range is 0.15-1.0 MPa (22-145 psi), proof pressure 1.5 MPa (215 psi), speed 30-500 mm/s, air filtered to 40 um, temperature -20 to +70 C.
The short ISO 21287-class aluminium body saves about 50% of the mounting length of an ISO 15552 profile cylinder, with a fixed TPU bumper at each end and FA/FB flange or LB foot options. The ACPD20X25S is discontinued; the current direct is the ACED20X25 in the same bore, stroke and force class - confirm the ISO 21287 mounting dimensions before ordering.
Send us the quantity and destination. We confirm price, stock and lead time on the ACED20X25S replacement — usually within 7-8 hours.