This model is discontinued
AirTAC has phased out the ACP series. You can still order this code here: we ship the current replacement ACED20X175SB, 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 ACPD20X175SB 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 ACED20X175SB (ISO 21287 ACE), in the same bore, stroke and force class.
Double acting with a rod exiting both covers, the discontinued ACPD20X175SB pushes and pulls with the same 117.8 N at 0.5 MPa (164.9 N at 0.7 MPa), because both strokes work on the rod-side area of the 20 mm bore. The through-rod resists rotation and light side load, gives a symmetric mount, and lets the rear rod carry a sensor flag, while fixed TPU bumpers pad both ends and travel runs at 30-500 mm/s.
The hard-anodized aluminium body follows the ISO 21287 short format, saving roughly 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into tight fixtures and gantries. The 175 mm stroke exceeds the 100 mm standard for this bore, so it is made to order. This model is discontinued; the current direct is ACED20X175 - confirm the ISO 21287 mounting dimensions before swapping.
| Model | Airtac ACPD Double Rod Compact Cylinder ACPD20X175SB |
|---|---|
| Series | ACPD DIN compact cylinder (discontinued) |
| Replacement | ACED20X175SB |
| 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 ACED20X175SB (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 push and pull at 0.5 MPa drives a small parts carrier back and forth on a light rail, with the rear rod doubling as a position flag mount.
The short ISO 21287 body fits inside a machining jig where a full-length profile cylinder cannot, applying about 70 N of practical clamping force at 0.5 MPa.
With the fitted -S magnet, CMSE or DMSE switches report both end positions on a small electronics assembly gripper arm running at 30-500 mm/s.
Size between bores: the 16 mm ACPD gives 75.4 N at 0.5 MPa, while the 25 mm ACPD reaches 206.2 N, so pick 20 mm when 117.8 N both ways matches the job. This unit carries the -S magnet for CMSE / DMSE switches and a male rod thread (B code) with PT ports. Note that a plain double-rod cylinder drifts when air is lost - add a rod lock or pilot check for a held load. Order ACED20X175 as the current replacement and verify ISO 21287 mounting dimensions.
Replacement checklist
Yes. Because a rod exits both covers, both strokes use the rod-side area of the 20 mm bore: 117.8 N at 0.5 MPa and 164.9 N at 0.7 MPa, equal in each direction, with a peak 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 175 mm stroke is a made-to-order length above the 100 mm standard for this bore.
Order ACED20X175, the current-production ISO 21287 successor made by swapping the P for an E. It matches the same bore, stroke and force class, and accepts FA/FB flange, LB foot and clevis hardware on the same face. The ACP is DIN-standard, so confirm the ISO 21287 mounting dimensions before swapping. The -S magnet on this unit carries CMSE / DMSE switch compatibility.
Send us the quantity and destination. We confirm price, stock and lead time on the ACED20X175SB replacement — usually within 7-8 hours.