This model is discontinued
AirTAC has phased out the ACP series. You can still order this code here: we ship the current replacement ACED20X175B, 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 ACPD20X175B 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 ACED20X175B (ISO 21287 ACE), in the same bore, stroke and force class.
Double acting with a rod leaving both covers, the ACPD20X175B 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. The 10 mm through-rod resists rotation and side load, gives a symmetric mount, and the rear rod can carry a sensor flag. Its 175 mm stroke is longer than the 100 mm standard limit for a 20 mm bore, so it is a made-to-order build. This model is discontinued; the current direct is the ISO 21287 ACED20X175 in the same bore, stroke and force class.
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 and guarding where a full-length body will not fit. A fixed TPU bumper sits at each end to soften the stroke ends, and speed runs 30-500 mm/s on air filtered to 40 um at 0.15-1.0 MPa (22-145 psi). Note the B code gives a male M6x1.0 rod thread, and if air is lost the piston drifts - use a rod lock or pilot check where a load must be held.
| Model | Airtac ACPD Double Rod Compact Cylinder ACPD20X175B |
|---|---|
| Series | ACPD DIN compact cylinder (discontinued) |
| Replacement | ACED20X175B |
| 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 ACED20X175B (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 through-rod lets a fixture clamp from either cover with the same 117.8 N at 0.5 MPa, so one cylinder serves both a locator and a hold-down on a small machining jig.
On a compact electronics assembly line, equal force in both directions moves trays or chutes back and forth without recalculating push versus pull ratings.
The rear rod carries a sensor flag for a proximity switch on a packaging guard interlock, keeping the sensing hardware clear of the working stroke.
At 117.8 N per side at 0.5 MPa, this 20 mm bore suits light clamping and transfer; step down to the 16 mm bore (75.4 N) for lighter tooling or up to the 25 mm bore (206.2 N) when the job needs more push. The 175 mm stroke is a non-standard, made-to-order length - the standard maximum for bore 20 is 100 mm. Mounting is FA/FB flange or LB foot, and the male M6x1.0 rod thread (B code) takes I/Y knuckles directly. No magnet is fitted on this code; order the -S version if you need CMSE / DMSE switches. For new projects, specify the ACED20X175 and confirm the ISO 21287 mounting dimensions before swapping.
Replacement checklist
Because it is a double-rod cylinder, output is equal in both directions: 117.8 N at 0.5 MPa and 164.9 N at 0.7 MPa (rod-side area), with a maximum of 24.0 kgf at 1.0 MPa. It runs on air filtered to 40 um at 0.15-1.0 MPa (22-145 psi), proof pressure 1.5 MPa (215 psi), temperature -20 to +70 C, speed 30-500 mm/s, with a fixed TPU bumper at each end, M5x0.8 ports and a male M6x1.0 rod thread. The 175 mm stroke is made to order; the standard maximum for bore 20 is 100 mm.
No - the ACPD family is discontinued and no longer in production. The current-production replacement is the ACED20X175, an ISO 21287 compact cylinder in the same bore, stroke and force class. Before swapping, confirm the ISO 21287 mounting dimensions against your fixture, since the ACP was built to a DIN-standard footprint. If you need position switches, order the -S magnet code so CMSE / DMSE sensors can be mounted.
Send us the quantity and destination. We confirm price, stock and lead time on the ACED20X175B replacement — usually within 7-8 hours.