This model is discontinued
AirTAC has phased out the ACP series. You can still order this code here: we ship the current replacement ACED20X175, 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 ACPD20X175 is a double acting, double rod DIN-standard tight/compact air cylinder with a Ø20mm bore and 175mm stroke, M5×0.8 air ports and a hard-anodized aluminium body. This model is discontinued — the current-production replacement is the ACED20X175 (ISO 21287 ACE), in the same bore, stroke and force class.
A double acting compact cylinder with a rod leaving both covers, the ACPD20X175 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 M5x08-style M5x0.8 port and an M6x1.0 female rod thread, and the 175 mm stroke is a made-to-order length since the standard maximum for this bore is 100 mm.
The through-rod resists rotation and light side load and gives a symmetric mount, so the rear rod can carry a sensor flag or a second tooling plate. Its short ISO 21287-class body saves about 50% of the mounting length of an ISO 15552 profile cylinder, which suits tight jigs and guarding. This model is discontinued; the current-production direct is the ACED20X175, so confirm ISO 21287 mounting dimensions before swapping.
| Model | Airtac ACPD Double Rod Compact Cylinder ACPD20X175 |
|---|---|
| Series | ACPD DIN compact cylinder (discontinued) |
| Replacement | ACED20X175 |
| Bore size | Ø20 mm |
| Stroke | 175 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 ACED20X175 (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. |
| ×175 | 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 keeps a small parts-carrying slide on a PCB assembly line moving at identical speed and force each way, with the rear rod driving a position flag.
A fixture builder uses the front rod to clamp a machined aluminium bracket while the back rod carries an indicator, all inside the 175 mm made-to-order stroke envelope.
A materials test rig uses the symmetric through-rod to push and pull a small specimen holder with matched 164.9 N force at 0.7 MPa, keeping the load train centered.
Size up to the 25 mm bore (206.2 N at 0.5 MPa) if the load grows, or down to the 16 mm bore (75.4 N) for lighter duty. Note that a plain double-rod cylinder drifts when air is lost, so add a rod lock or pilot check for a held load. FA/FB flange or LB foot mounting bolts to the standard face, and CMSE or DMSE switches work only when the optional -S magnet is ordered. Order the ACED20X175 as the current replacement.
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 maximum of 24.0 kgf at 1.0 MPa. Operating range is 0.15-1.0 MPa (22-145 psi), proof 1.5 MPa (215 psi), speed 30-500 mm/s, temperature -20 to +70 C, air filtered to 40 um. The 175 mm stroke is non-standard (bore 20 standard max is 100 mm) and made to order.
It is a compact short-body cylinder with a hard-anodized aluminium body, S45C hard-chrome rod, M5x0.8 ports, M6x1.0 female rod thread and a fixed TPU bumper at each end that only decelerates at the ends of travel. The body saves about 50% of the mounting length of an ISO 15552 profile cylinder. It is discontinued; the current direct is the ACED20X175, so confirm ISO 21287 mounting dimensions before ordering.
Send us the quantity and destination. We confirm price, stock and lead time on the ACED20X175 replacement — usually within 7-8 hours.