This model is discontinued
AirTAC has phased out the ACP series. You can still order this code here: we ship the current replacement ACED12X40, 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 ACPD12X40 is a double acting, double rod DIN-standard tight/compact air cylinder with a Ø12mm bore and 40mm stroke, M5×0.8 air ports and a hard-anodized aluminium body. This model is discontinued — the current-production replacement is the ACED12X40 (ISO 21287 ACE), in the same bore, stroke and force class.
A double acting, double-rod compact cylinder with a 12 mm bore and 40 mm stroke, the ACPD12X40 pushes and pulls with identical force because a rod exits both covers and both strokes use the rod-side area: 42.4 N at 0.5 MPa and 59.4 N at 0.7 MPa. The through-rod resists rotation and light side load, and the rear rod can carry a sensor flag in tight automation slots. Its short ISO 21287-class body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it fits where a full-length body will not.
Practically, plan on roughly 25 N (about 2.6 kg of vertical lift) of usable work at 0.5 MPa rather than the full rating. The hard-anodized aluminium body carries a fixed TPU bumper at both ends, the S45C hard-chrome rod ends in a female M3x0.5 thread, and the M5x0.8 port takes air filtered to 40 um at 0.15-1.0 MPa (22-145 psi), running 30-500 mm/s. Note this model is discontinued: the current-production direct is the ACED12X40, so confirm ISO 21287 mounting dimensions before swapping.
| Model | Airtac ACPD Double Rod Compact Cylinder ACPD12X40 |
|---|---|
| Series | ACPD DIN compact cylinder (discontinued) |
| Replacement | ACED12X40 |
| Bore size | Ø12 mm |
| Stroke | 40 mm |
| Acting type | Double acting, double rod |
| Port size | M5×0.8 |
| Rod thread | M3×0.5 |
| 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 50 mm |
Specifications follow the official AirTAC ACP datasheet (now discontinued). The ACED12X40 (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 | 42 N |
| 0.7 MPa | 59 N |
| Max (@1.0 MPa) | 9 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). |
|---|---|
| 12 | Bore size in mm. |
| ×40 | 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 symmetric 42.4 N push and pull ejects small stamped or molded parts from a fixture pocket and retracts the tool clear in one 40 mm stroke.
The rear rod carries a flag past a position switch on a pick-and-place gantry, giving a second detection point without extra hardware.
About 25 N of usable clamping force at 0.5 MPa secures thin PCBs or small brackets during a drilling or testing cycle.
At 42.4 N per side, this 12 mm bore suits light clamping and small-part transfer; step up to the 16 mm bore (75.4 N at 0.5 MPa) for a bit more grip or down to a direct-acting mini actuator for lighter work. The 40 mm stroke sits inside the 50 mm standard maximum for this bore, so no made-to-order stroke is needed. Like any plain double-rod cylinder it drifts when air is lost - add a rod lock or pilot check if the load must be held. Mounting brackets bolt to the ISO 21287 face, and the optional -S magnet code enables CMSE / DMSE switches (this model, without -S, has no magnet). Since ACPD is discontinued, order the ACED12X40 as the current replacement.
Replacement checklist
Yes - the double-rod design means both strokes use the rod-side area, so force is equal both ways: 42.4 N at 0.5 MPa and 59.4 N at 0.7 MPa, with a maximum of 8.6 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, temperature -20 to +70 C, port M5x0.8, female rod thread M3x0.5.
Order the ACED12X40, the current-production ISO 21287 replacement: swap the P for an E and you get the same 12 mm bore, 40 mm stroke and force class in a matching short body. Before swapping, confirm the ISO 21287 mounting dimensions against your fixture, since the ACP was built to the older DIN-standard pattern. FA/FB flange and LB foot brackets, plus the optional -S magnet for CMSE / DMSE switches, are specified on the new model.
Send us the quantity and destination. We confirm price, stock and lead time on the ACED12X40 replacement — usually within 7-8 hours.