This model is discontinued
AirTAC has phased out the ACP series. You can still order this code here: we ship the current replacement ACED20X80S, 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 ACPD20X80S is a double acting, double rod DIN-standard tight/compact air cylinder with a Ø20mm bore and 80mm stroke, M5×0.8 air ports and a hard-anodized aluminium body. This model is discontinued — the current-production replacement is the ACED20X80S (ISO 21287 ACE), in the same bore, stroke and force class.
A double acting compact cylinder with a rod leaving both covers, the ACPD20X80S 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 rod, an M5x0.8 port and a female M6x1.0 rod thread, and the S code means the magnet is fitted, so CMSE or DMSE reed and solid-state switches can be clipped on for end-of-stroke sensing. Note that this model is discontinued; the current-production successor is ACED20X80.
The short ISO 21287-class body saves roughly 50% of the mounting length of an ISO 15552 profile cylinder, which is why it suits tight jigs, guards and gantries. A fixed TPU bumper sits at both ends, the hard-anodized aluminium body pairs with an S45C hard-chrome rod, and speed runs 30-500 mm/s at 0.15-1.0 MPa (22-145 psi). Like any plain double-rod cylinder it drifts when air is lost, so add a rod lock or pilot check if the load must be held.
| Model | Airtac ACPD Double Rod Compact Cylinder ACPD20X80S |
|---|---|
| Series | ACPD DIN compact cylinder (discontinued) |
| Replacement | ACED20X80S |
| Bore size | Ø20 mm |
| Stroke | 80 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 ACED20X80S (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. |
| ×80 | 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 force in both directions drives a small lab test slide back and forth at 30-500 mm/s, with CMSE switches on the fitted magnet confirming each end position.
A rear rod on the same piston ejects a finished PCB carrier while the front rod clamps the next one, halving the station length in a compact electronics assembly jig.
The back-end rod carries a sensor flag past two DMSE switches, giving PLC-ready extend and retract signals on a packaging machine's gate without extra hardware.
At 117.8 N per side at 0.5 MPa, the 20 mm bore sits between the 16 mm bore (75.4 N) and the 25 mm bore (206.2 N); step up to 25 mm if your fixture needs the extra margin. The 80 mm stroke is within the 100 mm standard limit for this bore, so no made-to-order build is required. The through-rod resists rotation and side load and gives a symmetric mount, and the rear rod can carry a sensor flag. FA/FB flange and LB foot mountings bolt to the ISO 21287 face, and the fitted -S magnet accepts CMSE / DMSE switches. For new designs, order the ACED20X80 instead and confirm the ISO 21287 mounting dimensions before swapping.
Replacement checklist
Because a rod exits both covers, output is equal both ways: 117.8 N at 0.5 MPa and 164.9 N at 0.7 MPa on each stroke, with a maximum of 24.0 kgf at 1.0 MPa. Operating range is 0.15-1.0 MPa (22-145 psi) and speed is 30-500 mm/s. The model is discontinued; the direct successor is ACED20X80.
The S in the model code means the optional -S magnet is fitted, so CMSE reed or DMSE solid-state switches mount directly on the body for position feedback. The fixed TPU bumpers at each end only decelerate the piston near the ends of travel; they do not hold or brake a load, and the piston drifts if air is lost.
Send us the quantity and destination. We confirm price, stock and lead time on the ACED20X80S replacement — usually within 7-8 hours.