This model is discontinued
AirTAC has phased out the ACP series. You can still order this code here: we ship the current replacement ACE80X125S, 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 ACP Compact Cylinder ACP80X125S is a double acting DIN-standard tight/compact air cylinder with a Ø80mm bore and 125mm stroke, 1/4" air ports and a hard-anodized aluminium body. This model is discontinued — the current-production replacement is the ACE80X125S (ISO 21287 ACE), in the same bore, stroke and force class.
Double acting on both strokes, the ACP80X125S is AirTAC's DIN-standard compact cylinder with an 80 mm bore and 125 mm stroke, a hard-anodized aluminium body and an S45C hard-chrome 20 mm rod. At 0.5 MPa it pushes 2513.3 N and pulls 2356.2 N, rising to 3518.6 N / 3298.7 N at 0.7 MPa, with a theoretical ceiling of 512.6 kgf at 1.0 MPa. The short ISO 21287-class body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into tight presses, gates and fixtures. The -S code on this model means the magnet is fitted, so CMSE or DMSE reed and solid-state switches can be clipped on for end-of-stroke sensing.
A fixed TPU bumper at each end only softens the stroke ends; it never holds a load, so add a rod lock or pilot check valve where the rod must stay put if air is lost. This model is discontinued: the current-production direct is ACE80X125, same bore, stroke and force class - confirm the ISO 21287 mounting dimensions before swapping.
| Model | Airtac ACP Compact Cylinder ACP80X125S |
|---|---|
| Series | ACP DIN compact cylinder (discontinued) |
| Replacement | ACE80X125S |
| Bore size | Ø80 mm |
| Stroke | 125 mm |
| Acting type | Double acting |
| Port size | 1/4" |
| Rod thread | M12×1.75 |
| 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 300 mm |
Specifications follow the official AirTAC ACP datasheet (now discontinued). The ACE80X125S (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 | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 2513 N | 2356 N |
| 0.7 MPa | 3519 N | 3299 N |
| Max (@1.0 MPa) | 513 kgf | |
The ACE80X125S produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
| ACP | DIN compact cylinder (double-acting, discontinued). |
|---|---|
| 80 | 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 (double rod, adjustable stroke).
The 2513.3 N push at 0.5 MPa crimps terminals and light aluminium fittings; the 125 mm stroke clears loading by hand and the short body fits under a low press head.
Roughly 1508 N of usable clamp force at 0.5 MPa holds steel parts in a milling fixture; the compact body mounts where a full-length profile cylinder would not fit, with LB foot or FA flange plates.
At 80 mm bore this sits near the top of the range: 2513.3 N push at 0.5 MPa versus 981.7 N for a 50 mm bore, while the 100 mm bore steps up to 3927.0 N. If your load needs under about 1500 N of real work, the 63 mm bore (1558.6 N push) may be enough. Stroke 125 mm is well inside the 300 mm maximum standard stroke for this bore, so it is a catalogue item, not made to order. FA/FB flange, LB foot, CA/CB clevis, CR, SDB pivot and FTC brackets bolt to the same face, and the fitted -S magnet pairs with CMSE / DMSE switches. Since ACP is discontinued, order ACE80X125 and verify the ISO 21287 mounting dimensions.
Replacement checklist
Push is 2513.3 N and pull 2356.2 N at 0.5 MPa; at 0.7 MPa push is 3518.6 N and pull 3298.7 N; theoretical maximum is 512.6 kgf at 1.0 MPa. It is a double-acting compact cylinder, 80 mm bore, 125 mm stroke, 20 mm rod with female M12x1.25 thread class per datasheet, 1/4" PT ports, operating pressure 0.15-1.0 MPa (22-145 psi), proof 1.5 MPa (215 psi), speed 30-500 mm/s, temperature -20 to +70 C, air filtered to 40 um, fixed TPU bumpers at both ends. Confirm exact thread and dimensions from the datasheet.
Order ACE80X125, the ISO 21287 successor: swap the P for an E and you get the same 80 mm bore, 125 mm stroke and force class in a current-production short-body cylinder. The ACP is DIN-standard, so before swapping check the ISO 21287 mounting dimensions and the FA/FB, LB, CA/CB, CR, SDB or FTC bracket fit. If you also need end-of-stroke sensing, the -S magnet option on the ACE carries the same CMSE / DMSE switches.
Send us the quantity and destination. We confirm price, stock and lead time on the ACE80X125S replacement — usually within 7-8 hours.