This model is discontinued
AirTAC has phased out the ACP series. You can still order this code here: we ship the current replacement ACED20X120, 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 ACPD20X120 is a double acting, double rod DIN-standard tight/compact air cylinder with a Ø20mm bore and 120mm stroke, M5×0.8 air ports and a hard-anodized aluminium body. This model is discontinued — the current-production replacement is the ACED20X120 (ISO 21287 ACE), in the same bore, stroke and force class.
A double acting compact cylinder with a rod leaving both covers, the ACPD20X120 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 drives a 10 mm through-rod over a 120 mm stroke, which is beyond the 100 mm standard limit for this bore, so it is supplied as a made-to-order stroke. Its short ISO 21287-class body saves roughly 50% of the mounting length of an ISO 15552 profile cylinder, letting it slide into tight fixtures and guarding.
The through-rod resists rotation and light side load, gives a symmetric mounting face, and leaves the rear rod free to carry a sensor flag. A fixed TPU bumper sits at each end, the hard-anodized aluminium body carries M5x0.8 ports, and the female M6x1.0 rod thread accepts standard knuckles. Note this model is discontinued: the current direct is ACED20X120, so confirm ISO 21287 mounting dimensions before swapping.
| Model | Airtac ACPD Double Rod Compact Cylinder ACPD20X120 |
|---|---|
| Series | ACPD DIN compact cylinder (discontinued) |
| Replacement | ACED20X120 |
| Bore size | Ø20 mm |
| Stroke | 120 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 ACED20X120 (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. |
| ×120 | 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 drives a small slide on a PCB handling gantry, pushing and pulling with the same 117.8 N at 0.5 MPa so the return stroke needs no derating.
On an automotive bracket fixture the rear rod carries a flag that trips a CMSE switch (with the optional -S magnet ordered), confirming the clamp reached both ends of its 120 mm travel.
A packaging station uses the front and rear rods alternately to seat and eject blister trays, where the equal rod-side force of about 70 N usable keeps cycle force predictable.
Size by force: the next bore down, ACPD16, delivers 75.4 N at 0.5 MPa, while the ACPD25 step up gives 206.2 N - choose the 20 mm when your load sits between those figures and you want the symmetric through-rod. Remember the piston drifts when air is lost, so 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 CMSE or DMSE switches work only if you order the optional -S magnet code. This unit is discontinued; ACED20X120 is the current replacement in the same bore, stroke and force class.
Replacement checklist
Yes. Because a rod exits both covers, both strokes use the rod-side area: 117.8 N at 0.5 MPa and 164.9 N at 0.7 MPa either way, with a peak 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, temperature -20 to +70 C, and the 120 mm stroke is a made-to-order length above the 100 mm standard for this bore.
It is a short ISO 21287-class compact cylinder with a hard-anodized aluminium body, S45C hard-chrome rod, M5x08 ports - actually M5x0.8 - a female M6x1.0 rod thread and fixed TPU bumpers at both ends. The ACPD family is discontinued; the current-production direct is ACED20X120, same bore, stroke and force class, so verify the ISO 21287 mounting dimensions before you swap.
Send us the quantity and destination. We confirm price, stock and lead time on the ACED20X120 replacement — usually within 7-8 hours.