This model is discontinued
AirTAC has phased out the ACP series. You can still order this code here: we ship the current replacement ACED12X50, 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 ACPD12X50 is a double acting, double rod DIN-standard tight/compact air cylinder with a Ø12mm bore and 50mm stroke, M5×0.8 air ports and a hard-anodized aluminium body. This model is discontinued — the current-production replacement is the ACED12X50 (ISO 21287 ACE), in the same bore, stroke and force class.
A double acting compact cylinder with a rod leaving both covers, the ACPD12X50 pushes and pulls with identical force - 42.4 N at 0.5 MPa and 59.4 N at 0.7 MPa in either direction, since both strokes work on the rod-side area of the 12 mm bore. The through-rod resists rotation and light side load, gives a symmetric mounting point at each end, and the rear rod can carry a sensor flag. A fixed TPU bumper sits at both covers, and speed spans 30-500 mm/s.
The short ISO 21287-class body saves roughly 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into slim fixtures, small gates and compact test rigs. For planning, treat about 25 N (roughly 2.5 kg vertical) as the usable working force at 0.5 MPa instead of the full rating. Note this model is discontinued: the current-production direct is the ACED12X50, so confirm ISO 21287 mounting dimensions before swapping.
| Model | Airtac ACPD Double Rod Compact Cylinder ACPD12X50 |
|---|---|
| Series | ACPD DIN compact cylinder (discontinued) |
| Replacement | ACED12X50 |
| Bore size | Ø12 mm |
| Stroke | 50 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 ACED12X50 (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. |
| ×50 | 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 second rod at the back cover carries a flag past a switch on small assembly stations, giving a position signal without extra hardware - order the -S code if CMSE or DMSE switches are wanted.
With about 25 N of practical working force at 0.5 MPa, it clamps electronics housings, small brackets or PCB fixtures where heavier force would mark the part.
Equal force both ways plus a body about 50% shorter than an ISO 15552 profile cylinder makes it handy for reciprocating slides inside cramped laboratory or packaging equipment.
At 42.4 N per direction, this bore suits light clamping, positioning and sensor-flag duty rather than heavy pressing. If your load needs more, the 16 mm bore delivers 75.4 N at 0.5 MPa; if less is fine, check whether a smaller actuator or a lever mechanism covers it. The 50 mm stroke sits at the maximum standard stroke for bore 12, so no made-to-order length is needed. Rod end is female M3x0.5 and ports are M5x0.8 PT. A plain double-rod cylinder drifts when air is lost - add a rod lock or pilot check if the load must stay put. This unit is discontinued; the ACED12X50 is the current replacement in the same force class.
Replacement checklist
No - the rod exits both covers, so force is equal in both directions: 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 the port is M5x0.8. In practice plan on roughly 25 N (about 2.5 kg vertical) for real work at 0.5 MPa.
Order the ACED12X50, the current-production ISO 21287 successor: swap the P for an E and you get the same 12 mm bore, 50 mm stroke and force class with a matching short body and mounting family (FA/FB flange, LB foot and more). Because the ACP is DIN-standard, confirm the ISO 21287 mounting dimensions against your fixture before swapping. The optional -S magnet code enables CMSE / DMSE switches on the replacement.
Send us the quantity and destination. We confirm price, stock and lead time on the ACED12X50 replacement — usually within 7-8 hours.