This model is discontinued
AirTAC has phased out the ACP series. You can still order this code here: we ship the current replacement ACED25X45SB, 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 ACPD25X45SB is a double acting, double rod DIN-standard tight/compact air cylinder with a Ø25mm 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 ACED25X45SB (ISO 21287 ACE), in the same bore, stroke and force class.
The ACPD25X45SB is a double acting compact cylinder with a double rod: a 10 mm piston rod exits both covers, so the 25 mm bore delivers an equal 206.2 N in each direction at 0.5 MPa (288.6 N at 0.7 MPa), because both strokes work on the rod-side area. This S-coded unit carries the optional -S magnet, so CMSE or DMSE reed and solid-state switches can be clipped on for end-of-stroke sensing, and the B code gives a male rod thread. Note that this model is discontinued; the current-production successor is the ACED25X45.
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 guard-mounted fixtures. The through-rod resists rotation and side load and gives a symmetric mount, and the rear rod can carry a sensor flag. A fixed TPU bumper sits at both ends, speed spans 30-500 mm/s, and the hard-anodized aluminium body pairs with an S45C hard-chrome rod.
| Model | Airtac ACPD Double Rod Compact Cylinder ACPD25X45SB |
|---|---|
| Series | ACPD DIN compact cylinder (discontinued) |
| Replacement | ACED25X45SB |
| Bore size | Ø25 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 150 mm |
Specifications follow the official AirTAC ACP datasheet (now discontinued). The ACED25X45SB (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. |
| ×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 through-rod clamps a machined aluminum bracket from both sides of a drilling fixture with an equal 206.2 N at 0.5 MPa, keeping the part centered without a second cylinder.
With the -S magnet and a DMSE switch on each end, the 45 mm stroke confirms extend and retract of a stopper blade on a small-parts packaging line running at 30-500 mm/s.
The rear rod drives a return flag on a light gantry slide, so one 25 mm bore both pushes and pulls the carriage with matched 288.6 N at 0.7 MPa.
At 45 mm stroke and 206.2 N per side, this bore sits between the 20 mm (117.8 N) and 32 mm (345.6 N) sizes; step up to 32 mm if your fixture needs more margin, or down to 20 mm for lighter tooling. Like any plain double-rod cylinder it will drift if air is lost, so add a rod lock or pilot check for a held load. LB foot and FA/FB flange mounts bolt to the same face, and the ACED25X45 is the direct replacement - confirm ISO 21287 mounting dimensions before swapping, since the ACP is DIN-standard.
Replacement checklist
Because it is a double-rod cylinder, force is equal both ways: 206.2 N at 0.5 MPa and 288.6 N at 0.7 MPa per direction, 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), and speed 30-500 mm/s. The bore is 25 mm with a 10 mm rod and an M5x0.8 port.
The compact aluminium body cuts mounting length by about half compared with an ISO 15552 profile cylinder, so it fits shallow guards and gantries. The fixed TPU pad at each end only decelerates the piston at the ends of travel; it is not adjustable and never holds a load, so use a rod lock or pilot check where position must be kept. This unit is discontinued - the ACED25X45 is the current direct, so verify ISO 21287 mounting dimensions first.
Send us the quantity and destination. We confirm price, stock and lead time on the ACED25X45SB replacement — usually within 7-8 hours.