This model is discontinued
AirTAC has phased out the ACP series. The drop-in replacement is ACE25X125S — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the ACE25X125S in place of this model. 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 ACP Compact Cylinder ACP25X125S
The AirTAC Airtac ACP Compact Cylinder ACP25X125S is a double acting DIN-standard tight/compact air cylinder with a Ø25mm bore and 125mm stroke, M5×0.8 air ports and a hard-anodized aluminium body. This model is discontinued — the current-production replacement is the ACE25X125S (ISO 21287 ACE), in the same bore, stroke and force class.
- BoreØ25 mm
- Stroke125 mm
- Port sizeM5×0.8
- Acting typeDouble acting
- Rod threadM6×1.0
- StatusDiscontinued → ACE25X125S
- 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 ACP Compact Cylinder ACP25X125S
The ACP25X125S is a double acting compact cylinder in the DIN-standard ACP series, now discontinued. This 25 mm bore, 125 mm stroke unit carries the optional -S magnet, so CMSE or DMSE reed and solid-state switches can be fitted for end-of-stroke sensing. At 0.5 MPa it pushes 245.4 N and pulls 206.2 N; at 0.7 MPa those rise to 343.6 N and 288.6 N, with a theoretical maximum of 50.1 kgf at 1.0 MPa.
Its short ISO 21287-class body saves roughly 50% of the mounting length of an ISO 15552 profile cylinder, which is why it fits tight jigs and guarding where a full-length body cannot. For sizing, treat about 0.6 of the push force as usable work at 0.5 MPa - roughly 147 N - which corresponds to lifting about 12 kg vertically, or about 6 kg with a 2:1 margin. The hard-anodized aluminium body and S45C hard-chrome rod run on 0.15-1.0 MPa (22-145 psi) at 30-500 mm/s, with fixed TPU bumpers at both ends. Replacement is the current-production ACE25X125; confirm ISO 21287 mounting dimensions before swapping, since the ACP was built to a DIN standard.
Airtac ACP Compact Cylinder ACP25X125S Technical Specifications
| Model | Airtac ACP Compact Cylinder ACP25X125S |
|---|---|
| Series | ACP DIN compact cylinder (discontinued) |
| Replacement | ACE25X125S |
| Bore size | Ø25 mm |
| Stroke | 125 mm |
| Acting type | Double acting |
| 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 ACE25X125S (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 | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 245 N | 206 N |
| 0.7 MPa | 344 N | 289 N |
| Max (@1.0 MPa) | 50 kgf | |
The ACE25X125S produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac ACP Compact Cylinder ACP25X125S
| ACP | DIN compact cylinder (double-acting, discontinued). |
|---|---|
| 25 | Bore size in mm. |
| ×125 | 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 (adjustable stroke).
Where the Airtac ACP Compact Cylinder ACP25X125S Is Used
Fixture clamping on CNC pallets
With 245.4 N push at 0.5 MPa, the 25 mm bore clamps aluminium or small steel workpieces in machining fixtures; the 125 mm stroke clears part loading and unloading.
Position-verified ejector on assembly lines
Because this unit carries the -S magnet, CMSE or DMSE switches confirm extend and retract on a small-parts ejection station, cutting cycle faults on electronics assembly lines.
Vertical lift in a compact gantry
The short body saves about 50% of the length of an ISO 15552 profile cylinder, so it lifts roughly 12 kg parts inside a low-profile pick-and-place gantry where a longer body will not fit.
Replacing the Airtac ACP Compact Cylinder ACP25X125S with the ACE25X125S
At 245.4 N push at 0.5 MPa, the 25 mm bore suits clamping and positioning loads in the 10-15 kg class; step down to a 20 mm bore (157.1 N) for lighter fixtures or up to a 32 mm bore (402.1 N) when the load grows. Note that a plain cylinder drifts when air is lost - add a rod lock or pilot check valve if the load must stay put. The female M6x1.0 rod thread takes standard I/Y knuckles, and FA/FB flange, LB foot or CA/CB clevis mounts bolt to the same face. This model already includes the -S magnet for CMSE/DMSE switches. Order the ACE25X125 as the current drop-in and verify ISO 21287 mounting dimensions.
Replacement checklist
- ✓ Current-production ACE → ACE25X125S
- ✓ Same bore / stroke / force class
- ✓ Confirm ISO 21287 mounting dimensions
- ✓ Port/thread type (PT / G)
- ✓ Add -S for magnet if you need sensors
Airtac ACP Compact Cylinder ACP25X125S FAQ
At 0.5 MPa it pushes 245.4 N and pulls 206.2 N; at 0.7 MPa, 343.6 N push and 288.6 N pull; theoretical maximum 50.1 kgf at 1.0 MPa. Operating range is 0.15-1.0 MPa (22-145 psi), speed 30-500 mm/s, port M5x0.8, rod 10 mm with female M6x1.0 thread. The ACP family is discontinued; the current-production replacement is the ACE25X125 in the same bore, stroke and force class - confirm ISO 21287 mounting dimensions before swapping.
The short ISO 21287-class body needs about half the mounting length of an ISO 15552 profile cylinder, so it fits shallow jigs, guards and slides. The -S code on this model means the magnet is fitted, so CMSE or DMSE reed or solid-state switches mount directly on the body for stroke sensing. The ends carry fixed TPU bumpers only; they do not hold a load, so add a rod lock or check valve where position must be retained.
Related AirTAC ACE Cylinders
Request a Quote for the ACE25X125S
Send us the quantity and destination. We confirm price, stock and lead time on the ACE25X125S replacement — usually within 7-8 hours.