This model is discontinued
AirTAC has phased out the ACP series. You can still order this code here: we ship the current replacement ACED25X55S, 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.
Airtac ACPD Double Rod Compact Cylinder ACPD25X55S
The AirTAC ACPD Double Rod Compact Cylinder ACPD25X55S is a double acting, double rod DIN-standard tight/compact air cylinder with a Ø25mm bore and 55mm stroke, M5×0.8 air ports and a hard-anodized aluminium body. This model is discontinued — the current-production replacement is the ACED25X55S (ISO 21287 ACE), in the same bore, stroke and force class.
- BoreØ25 mm
- Stroke55 mm
- Port sizeM5×0.8
- Acting typeDouble acting, double rod
- Rod threadM6×1.0
- StatusDiscontinued → ACED25X55S
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac ACPD Double Rod Compact Cylinder ACPD25X55S
A double acting, double-rod compact cylinder built to the DIN-standard ACP layout, the ACPD25X55S pushes a 25 mm piston through a 55 mm stroke with a rod leaving both covers. Because each side sees the rod-side area, output is equal in both directions: 206.2 N at 0.5 MPa and 288.6 N at 0.7 MPa. The through-rod resists rotation and side load, and the rear rod makes a handy sensor-flag carrier. The body is hard-anodized aluminium with an S45C hard-chrome rod, running at 0.15-1.0 MPa (22-145 psi) and 30-500 mm/s.
The short ISO 21287-class body saves roughly 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into tight pick-and-place gantries and fixture plates. The S in the model code means the optional -S magnet is fitted, so CMSE or DMSE reed and solid-state switches can be mounted directly. Note this model is discontinued; the current-production direct is the ACED25X55 - confirm the ISO 21287 mounting dimensions before swapping.
Airtac ACPD Double Rod Compact Cylinder ACPD25X55S Technical Specifications
| Model | Airtac ACPD Double Rod Compact Cylinder ACPD25X55S |
|---|---|
| Series | ACPD DIN compact cylinder (discontinued) |
| Replacement | ACED25X55S |
| Bore size | Ø25 mm |
| Stroke | 55 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 ACED25X55S (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.
Theoretical Output Force (Ø25mm)
| 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).
Model Code: Airtac ACPD Double Rod Compact Cylinder ACPD25X55S
| ACPD | DIN compact cylinder (double-rod, discontinued). |
|---|---|
| 25 | Bore size in mm. |
| ×55 | 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).
Where the Airtac ACPD Double Rod Compact Cylinder ACPD25X55S Is Used
Fixture clamping on CNC pallets
The 206.2 N through-rod clamps aluminum housings from both sides on a machining pallet, with the rear rod carrying a CMSE switch to confirm full clamp.
Push-pull sorting gates
Equal force both ways makes the double rod ideal for diverting cartons on a packaging line gate at 55 mm travel, no direction bias to tune out.
Position-flagged test rigs
With the -S magnet fitted, DMSE switches on the barrel give end-of-stroke signals for a leak-test fixture cycling at 30-500 mm/s.
Replacing the Airtac ACPD Double Rod Compact Cylinder ACPD25X55S with the ACED25X55S
At 55 mm stroke this sits well inside the 150 mm standard range for the 25 mm bore. If 206.2 N at 0.5 MPa is more than the job needs, the ACPD20X55S delivers 117.8 N in the same footprint class; if the load is heavier, step up to the ACPD32X55S at 345.6 N. Remember the piston drifts if air is lost - add a rod lock or pilot check where a held load matters. FA/FB flange and LB foot mountings bolt straight on, and the ACED25X55 is the current ISO 21287 replacement to order going forward.
Replacement checklist
- ✓ Current-production ACE → ACED25X55S
- ✓ Same bore / stroke / force class
- ✓ Confirm ISO 21287 mounting dimensions
- ✓ Port/thread type (PT / G)
- ✓ Add -S for magnet if you need sensors
Airtac ACPD Double Rod Compact Cylinder ACPD25X55S FAQ
As a double-rod cylinder the force is identical in both directions: 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. Stroke is 55 mm on a 25 mm bore with a 10 mm rod, M5x0.8 ports, PT body thread and an M6x1.0 female rod thread. Operating range is 0.15-1.0 MPa (22-145 psi), proof 1.5 MPa (215 psi), speed 30-500 mm/s, temperature -20 to +70 C.
Order the ACED25X55, the current-production ISO 21287 successor made by swapping the P for an E. It matches the same 25 mm bore, 55 mm stroke and force class, and accepts the same FA/FB flange and LB foot mounting family plus CMSE / DMSE switches when the -S magnet is specified. Because the ACP is DIN-standard rather than ISO 21287, confirm the mounting dimensions against the ACE drawing before you swap.
Related AirTAC ACE Cylinders
Request a Quote for the ACED25X55S
Send us the quantity and destination. We confirm price, stock and lead time on the ACED25X55S replacement — usually within 7-8 hours.