This model is discontinued
AirTAC has phased out the ACP series. You can still order this code here: we ship the current replacement ACED20X45B, 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 ACPD20X45B is a double acting, double rod DIN-standard tight/compact air cylinder with a Ø20mm bore and 45mm stroke, M5×0.8 air ports and a hard-anodized aluminium body. This model is discontinued — the current-production replacement is the ACED20X45B (ISO 21287 ACE), in the same bore, stroke and force class.
Double acting with a rod leaving both covers, the ACPD20X45B pushes with equal force in each direction because both strokes work on the rod-side area: 117.8 N at 0.5 MPa and 164.9 N at 0.7 MPa. The 20 mm bore drives a 10 mm through-rod over a 45 mm stroke at 30-500 mm/s, with a fixed TPU bumper at each end. This model is discontinued; the current-production successor is ACED20X45, same bore, stroke and force class.
The short ISO 21287-class body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into tight fixtures and guarding. The hard-anodized aluminium body carries an S45C hard-chrome rod, and the through-rod resists rotation and side load while the rear rod can carry a sensor flag. No magnet is fitted on this code; order the optional -S version for CMSE / DMSE switches.
| Model | Airtac ACPD Double Rod Compact Cylinder ACPD20X45B |
|---|---|
| Series | ACPD DIN compact cylinder (discontinued) |
| Replacement | ACED20X45B |
| Bore size | Ø20 mm |
| Stroke | 45 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 ACED20X45B (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. |
| ×45 | 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 117.8 N symmetric push clamps small aluminium brackets in machining fixtures, and the rear rod carries a clamp-present flag for the PLC.
A 45 mm stroke nudges PCB carriers off a conveyor lane; equal force both ways lets the same cylinder reject parts in either direction.
At 117.8 N per side at 0.5 MPa this 20 mm bore suits light clamping and transfer; step down to a 16 mm bore (75.4 N) for smaller loads or up to 25 mm (206.2 N) when you need roughly 75% more force. The 45 mm stroke sits well inside the 100 mm standard limit for this bore, so no made-to-order build is needed. The B code gives a male M6x1.0 rod thread; FA/FB flange or LB foot mounts bolt to the same face. Since a plain through-rod cylinder drifts when air is lost, add a rod lock or pilot check for held loads. For new projects specify ACED20X45 and confirm the ISO 21287 mounting dimensions before swapping.
Replacement checklist
Because a rod exits both covers, force is equal in both directions: 117.8 N at 0.5 MPa and 164.9 N at 0.7 MPa on the rod-side area, with a maximum 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, air filtered to 40 um, temperature -20 to +70 C.
No - the ACPD family is discontinued. The current direct is ACED20X45 (swap the P for an E), which matches the same 20 mm bore, 45 mm stroke and force class in the ISO 21287 short-body format. Confirm the ISO 21287 mounting dimensions against your fixture before swapping, since the ACP was built to the older DIN-standard pattern.
Send us the quantity and destination. We confirm price, stock and lead time on the ACED20X45B replacement — usually within 7-8 hours.