This model is discontinued
AirTAC has phased out the ACP series. You can still order this code here: we ship the current replacement ACED25X50B, 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 ACPD25X50B is a double acting, double rod DIN-standard tight/compact air cylinder with a Ø25mm bore and 50mm stroke, M5×0.8 air ports and a hard-anodized aluminium body. This model is discontinued — the current-production replacement is the ACED25X50B (ISO 21287 ACE), in the same bore, stroke and force class.
A double acting compact cylinder with a rod leaving both covers, the ACPD25X50B pushes and pulls with identical force: 206.2 N at 0.5 MPa and 288.6 N at 0.7 MPa in either direction, because both strokes work on the rod-side area. The 25 mm bore and 50 mm stroke suit short-stroke tooling, and the through-rod resists rotation and side load while the rear rod can carry a sensor flag. Speed range is 30-500 mm/s.
The hard-anodized aluminium body keeps the mounting length roughly 50% shorter than an ISO 15552 profile cylinder, so it slots into tight fixtures and guarding. A fixed TPU bumper sits at each end, and the male rod thread (B code) bolts to standard knuckles. Note this model is discontinued; the current direct is the ISO 21287 ACED25X50, so confirm mounting dimensions before swapping.
| Model | Airtac ACPD Double Rod Compact Cylinder ACPD25X50B |
|---|---|
| Series | ACPD DIN compact cylinder (discontinued) |
| Replacement | ACED25X50B |
| Bore size | Ø25 mm |
| Stroke | 50 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 150 mm |
Specifications follow the official AirTAC ACP datasheet (now discontinued). The ACED25X50B (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 | 206 N |
| 0.7 MPa | 289 N |
| Max (@1.0 MPa) | 42 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). |
|---|---|
| 25 | Bore size in mm. |
| ×50 | 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 clamps a machined housing from both sides of a drilling fixture with equal 206.2 N force, so the jig needs no second cylinder.
One rod face pushes cartons off a conveyor while the rear rod returns a gate, both strokes delivering 288.6 N at 0.7 MPa.
The back-end rod carries a flag past a CMSE or DMSE switch (when the -S magnet is ordered) to confirm stroke on a 50 mm parts-transfer slide.
Step down to the 20 mm bore (117.8 N) for lighter pick-and-place, or up to the 32 mm bore (345.6 N) if the part weight grows. Remember the piston drifts when air is lost, so add a rod lock or pilot check for held loads. LB foot or FA/FB flange mounts fit the standard face, and the optional -S magnet enables CMSE / DMSE switches - this unit has no magnet fitted. Order ACED25X50 as the current-production replacement.
Replacement checklist
Yes - the double-rod design means both strokes use the rod-side area, so force is equal either way: 206.2 N at 0.5 MPa and 288.6 N at 0.7 MPa, with a maximum of 42.0 kgf at 1.0 MPa. Operating pressure is 0.15-1.0 MPa (22-145 psi), proof pressure 1.5 MPa (215 psi), speed 30-500 mm/s, and the port is M5x0.8.
The hard-anodized aluminium body is an ISO 21287-class short build, 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 ACPD25X50B is discontinued; the current direct is ACED25X50 (same bore, stroke and force class) - confirm the ISO 21287 mounting dimensions before swapping.
Send us the quantity and destination. We confirm price, stock and lead time on the ACED25X50B replacement — usually within 7-8 hours.