This model is discontinued
AirTAC has phased out the ACP series. You can still order this code here: we ship the current replacement ACED25X55SB, 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 ACPD25X55SB
The AirTAC ACPD Double Rod Compact Cylinder ACPD25X55SB 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 ACED25X55SB (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 → ACED25X55SB
- 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 ACPD25X55SB
This is a double acting, double-rod compact cylinder: a piston rod exits both covers of the hard-anodized aluminium body, so the 25 mm bore delivers the same 206.2 N at 0.5 MPa (288.6 N at 0.7 MPa) on every stroke, because both sides work on the rod-side area. The 55 mm stroke runs at 30-500 mm/s on air filtered to 40 um, within a 0.15-1.0 MPa (22-145 psi) operating band and a 1.5 MPa (215 psi) proof rating. The male rod thread (B code) bolts straight to I/Y knuckles.
The short ISO 21287-class body saves about 50% of the mounting length of an ISO 15552 profile cylinder, which is why it suits tight jigs and gantries. The through-rod resists rotation and side load and gives a symmetric mount, while the back-end rod can carry a sensor flag; fixed TPU bumpers pad both ends. Note: this model is discontinued - the current direct is ACED25X55, so confirm ISO 21287 mounting dimensions before swapping. The -S magnet on this unit accepts CMSE / DMSE switches.
Airtac ACPD Double Rod Compact Cylinder ACPD25X55SB Technical Specifications
| Model | Airtac ACPD Double Rod Compact Cylinder ACPD25X55SB |
|---|---|
| Series | ACPD DIN compact cylinder (discontinued) |
| Replacement | ACED25X55SB |
| 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 ACED25X55SB (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 ACPD25X55SB
| 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 ACPD25X55SB Is Used
Bidirectional ejection on assembly fixtures
The through-rod pushes finished housings off a fixture from either side at 206.2 N, so one cylinder replaces two single-rod units in a tight cell.
Position-flagged slide in a packaging machine
The -S magnet lets CMSE or DMSE switches report extend and retract on the 55 mm stroke of a carton pusher running at 300 mm/s.
Symmetric clamp on a CNC gantry jig
Equal 288.6 N force at 0.7 MPa in both directions centers aluminium extrusions between two rod ends, with the short body fitting under the guard.
Replacing the Airtac ACPD Double Rod Compact Cylinder ACPD25X55SB with the ACED25X55SB
At 206.2 N per side at 0.5 MPa, the 25 mm bore sits mid-range: 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. The 55 mm stroke is well inside the 150 mm standard limit for this bore, so no made-to-order build is needed. Because a plain double-rod cylinder drifts when air is lost, add a rod lock or pilot check if the load must be held. This unit already carries the optional -S magnet and the male rod thread; LB foot or FA/FB flange mounts bolt to the same face. Order ACED25X55 as the current-production replacement.
Replacement checklist
- ✓ Current-production ACE → ACED25X55SB
- ✓ 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 ACPD25X55SB FAQ
Output is equal both ways because the rod-side area works on each stroke: 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, temperature -20 to +70 C.
The hard-anodized aluminium body is an ISO 21287-class short build that saves about 50% of the mounting length of an ISO 15552 profile cylinder, with FA/FB flange, LB foot and CA/CB clevis options on the same face. Each end carries a fixed TPU bumper that only decelerates the piston; it is not adjustable and never holds a load. The ACPD25X55SB is discontinued - ACED25X55 is the current direct, so confirm the ISO 21287 mounting dimensions before ordering.
Related AirTAC ACE Cylinders
Request a Quote for the ACED25X55SB
Send us the quantity and destination. We confirm price, stock and lead time on the ACED25X55SB replacement — usually within 7-8 hours.