This model is discontinued
AirTAC has phased out the ACP series. You can still order this code here: we ship the current replacement ACED20X20B, 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 ACPD20X20B is a double acting, double rod DIN-standard tight/compact air cylinder with a Ø20mm bore and 20mm stroke, M5×0.8 air ports and a hard-anodized aluminium body. This model is discontinued — the current-production replacement is the ACED20X20B (ISO 21287 ACE), in the same bore, stroke and force class.
Double acting with a rod leaving both covers, the ACPD20X20B pushes and pulls with the same 117.8 N at 0.5 MPa (164.9 N at 0.7 MPa), because each stroke works on the rod-side area. The 20 mm bore takes a 10 mm through-rod with a male thread on both ends (the B code), and the fixed TPU bumper at each cover decelerates the piston. Speed range is 30-500 mm/s at 0.15-1.0 MPa (22-145 psi).
The short ISO 21287-class body saves roughly 50% of the mounting length of an ISO 15552 profile cylinder, which is why this size suits slim pick-and-place heads and test fixtures. Note that this model is discontinued: the current-production direct is ACED20X20, so confirm ISO 21287 mounting dimensions before swapping.
| Model | Airtac ACPD Double Rod Compact Cylinder ACPD20X20B |
|---|---|
| Series | ACPD DIN compact cylinder (discontinued) |
| Replacement | ACED20X20B |
| Bore size | Ø20 mm |
| Stroke | 20 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 ACED20X20B (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. |
| ×20 | 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 both sides with equal 117.8 N force, ideal for holding an aluminium housing during a CNC drilling op.
The rear rod carries a flag past a proximity sensor on a small assembly station, while the front rod does the 20 mm push.
Equal force in both directions suits a reciprocating wear-test sled cycling a sample at 30-500 mm/s under a 6 kg vertical load.
At 117.8 N both ways, bore 20 sits between bore 16 (75.4 N at 0.5 MPa) and bore 25 (206.2 N at 0.5 MPa), so step up to 25 mm if your part weight exceeds about 12 kg of vertical lift. A plain double-rod cylinder drifts when air is lost, so add a rod lock or pilot check for a held load. Mounting brackets and I/Y knuckles bolt to the ISO 21287 face, and the optional -S magnet enables CMSE / DMSE switches; this code has no magnet. Order ACED20X20 as the current replacement.
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, with a maximum of 24.0 kgf at 1.0 MPa. Operating pressure is 0.15-1.0 MPa (22-145 psi) and speed is 30-500 mm/s.
The hard-anodized aluminium body follows the short ISO 21287-class format, saving about 50% of the mounting length of an ISO 15552 profile cylinder, with FA/FB flange or LB foot mounting and a fixed TPU bumper at each end. The ACPD family is discontinued; ACED20X20 is the current direct, so confirm ISO 21287 mounting dimensions before ordering.
Send us the quantity and destination. We confirm price, stock and lead time on the ACED20X20B replacement — usually within 7-8 hours.