This model is discontinued
AirTAC has phased out the ACP series. You can still order this code here: we ship the current replacement ACED25X55B, 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 ACPD25X55B
The AirTAC ACPD Double Rod Compact Cylinder ACPD25X55B 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 ACED25X55B (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 → ACED25X55B
- 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 ACPD25X55B
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 on every stroke - push and pull are identical because both sides work on the rod-side area. At 0.7 MPa that rises to 288.6 N each way. The 55 mm stroke sits well inside the 150 mm standard range for this bore, and the male rod thread (the B code) bolts straight to I/Y knuckles or your own tooling. AirTAC has discontinued the ACPD family; the current-production direct is the ACED25X55, so confirm ISO 21287 mounting dimensions before you swap.
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 guarded gantries. A fixed TPU bumper pads both ends, speed runs 30-500 mm/s, and the through-rod resists rotation and side load while the rear rod can carry a sensor flag. Note the piston drifts if air is lost - use a rod lock or pilot check to hold a load.
Airtac ACPD Double Rod Compact Cylinder ACPD25X55B Technical Specifications
| Model | Airtac ACPD Double Rod Compact Cylinder ACPD25X55B |
|---|---|
| Series | ACPD DIN compact cylinder (discontinued) |
| Replacement | ACED25X55B |
| 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 ACED25X55B (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 ACPD25X55B
| 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 ACPD25X55B Is Used
Symmetric jig clamping
The male rod thread and equal 206.2 N force both ways let one cylinder clamp a machined housing from either side of a drilling fixture without flipping hardware.
Reciprocating slide drive
A rod on each cover balances a small pick-and-place slide, so the same 288.6 N at 0.7 MPa accelerates the carriage in both directions at up to 500 mm/s.
Rear-rod flag station
The back-end rod can carry a position flag on a packaging machine indexing arm - order the -S magnet version if you want CMSE or DMSE switches on the body.
Replacing the Airtac ACPD Double Rod Compact Cylinder ACPD25X55B with the ACED25X55B
At 206.2 N per direction, this 25 mm bore covers light clamping and transfer tasks; step down to the 20 mm bore (117.8 N) for smaller fixtures or up to the 32 mm bore (345.6 N) when you need more grip. The 55 mm stroke is a standard length for bore 25 (max standard 150 mm). Mounting options include FA/FB flange, LB foot, CA/CB clevis, CR, SDB pivot and FTC brackets on the ISO 21287 face. This unit has no magnet - order the -S code if you want CMSE / DMSE switch positions. Replacement: ACED25X55, same bore, stroke and force class; verify the ISO 21287 hole pattern first.
Replacement checklist
- ✓ Current-production ACE → ACED25X55B
- ✓ 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 ACPD25X55B FAQ
Because it is a double-rod cylinder, force is equal 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. 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 rod is 10 mm with a male thread. For real work at 0.5 MPa, budget about 124 N (roughly 12.6 kg of thrust).
The short ISO 21287-class body saves about 50% of the mounting length of an ISO 15552 profile cylinder, with a fixed TPU bumper at both ends and FA/FB, LB, CA/CB, CR, SDB or FTC mounting. The ACPD family is discontinued; the current direct is the ACED25X55 (same bore, stroke and force class) - confirm the ISO 21287 mounting dimensions before swapping, since the ACP is DIN-standard.
Related AirTAC ACE Cylinders
Request a Quote for the ACED25X55B
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