This model is discontinued
AirTAC has phased out the ACP series. You can still order this code here: we ship the current replacement ACED12X45B, 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 ACPD12X45B is a double acting, double rod DIN-standard tight/compact air cylinder with a Ø12mm bore and 45mm stroke, M5×0.8 air ports and a hard-anodized aluminium body. This model is discontinued — the current-production replacement is the ACED12X45B (ISO 21287 ACE), in the same bore, stroke and force class.
Double acting with a rod leaving both covers, the ACPD12X45B pushes and pulls with identical force: 42.4 N at 0.5 MPa and 59.4 N at 0.7 MPa in either direction, because both strokes work on the rod-side area. The 6 mm through-rod resists rotation and light side load, gives a symmetric mounting point, and leaves the rear rod free for a sensor flag. A fixed TPU bumper sits at each end, and speed runs 30-500 mm/s on air filtered to 40 um at 0.15-1.0 MPa (22-145 psi).
The hard-anodized aluminium body is an ISO 21287 short build, cutting roughly 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into tight fixtures a full-length body cannot. Note this model is discontinued: the current direct is the ACED12X45 (swap the P for an E), so confirm ISO 21287 mounting dimensions before ordering.
| Model | Airtac ACPD Double Rod Compact Cylinder ACPD12X45B |
|---|---|
| Series | ACPD DIN compact cylinder (discontinued) |
| Replacement | ACED12X45B |
| Bore size | Ø12 mm |
| Stroke | 45 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 ACED12X45B (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. |
| ×45 | 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 through-rod ejects finished watch or connector components from a drill jig with equal 42.4 N force whichever way the piston travels, and the rear rod can carry a flag for a proximity check.
A 45 mm stroke at 30-500 mm/s advances microscope slides or vials between test stations, with the fixed TPU bumper decelerating the 6 mm rod at each end of a compact benchtop module.
Mounted on an LB foot inside a tight cartoning guard, the short ISO 21287 body squares light carton flaps with about 2.6 kg of usable thrust, well matched to thin board stock.
At 42.4 N per side at 0.5 MPa, this 12 mm bore suits light clamping, ejecting and part-presenting. Step down only if you need a shorter body, since bore 12 is the smallest in the family; step up to the 16 mm bore (75.4 N at 0.5 MPa) when the load creeps past about 25 N of real work. The 45 mm stroke sits inside the 50 mm maximum standard stroke for this bore, so it is a catalogue item. The B code gives a male rod thread; without the -S code there is no magnet, so no CMSE or DMSE switch can be fitted - order ACPD12X45BS if position sensing matters. Remember the piston drifts if air is lost, so add a rod lock or pilot check for a held load. For new projects, specify the ACED12X45 instead.
Replacement checklist
Yes - the double-rod design means both strokes use the rod-side area, so output is equal either way: 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 and temperature -20 to +70 C.
AirTAC no longer produces the ACPD family. The current-production replacement is the ACED12X45, an ISO 21287 compact cylinder in the same bore, stroke and force class - just swap the P for an E in the code. Because the ACP is DIN-standard, confirm the ISO 21287 mounting dimensions against your fixture before swapping. If you need the optional -S magnet for CMSE or DMSE switches, order it on the ACED code as well.
Send us the quantity and destination. We confirm price, stock and lead time on the ACED12X45B replacement — usually within 7-8 hours.