This model is discontinued
AirTAC has phased out the ACP series. You can still order this code here: we ship the current replacement ACE12X125, 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 ACP Compact Cylinder ACP12X125
The AirTAC ACP Compact Cylinder ACP12X125 is a double acting DIN-standard tight/compact air cylinder with a Ø12mm 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 ACE12X125 (ISO 21287 ACE), in the same bore, stroke and force class.
- BoreØ12 mm
- Stroke125 mm
- Port sizeM5×0.8
- Acting typeDouble acting
- Rod threadM3×0.5
- StatusDiscontinued → ACE12X125
- 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 ACP12X125
A double acting compact cylinder in the DIN-standard ACP series, the ACP12X125 pairs a 12 mm bore with a long 125 mm stroke in a short hard-anodized aluminium body. At 0.5 MPa it pushes 56.5 N and pulls 42.4 N, rising to 79.2 N push at 0.7 MPa, with a theoretical ceiling of 11.5 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 slim pick-and-place heads and test fixtures where a full-length body will not fit.
Note that the 125 mm stroke is beyond the 50 mm maximum standard stroke for this bore, so it is a made-to-order build. The rod is 6 mm with a female M3x0.5 thread and the air port is M5x0.8. For positioning feedback, order the optional -S magnet code, which allows CMSE or DMSE switches to be fitted; without -S there is no magnet in the piston. As a rough sizing rule, plan on roughly 33.9 N (about 3.5 kg of force) of usable work at 0.5 MPa rather than the full rating. This model is discontinued; the current-production direct is ACE12X125, so confirm ISO 21287 mounting dimensions before swapping.
Airtac ACP Compact Cylinder ACP12X125 Technical Specifications
| Model | Airtac ACP Compact Cylinder ACP12X125 |
|---|---|
| Series | ACP DIN compact cylinder (discontinued) |
| Replacement | ACE12X125 |
| Bore size | Ø12 mm |
| Stroke | 125 mm |
| Acting type | Double acting |
| Port size | M5×0.8 |
| Rod thread | M3×0.5 |
| 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 50 mm |
Specifications follow the official AirTAC ACP datasheet (now discontinued). The ACE12X125 (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 (Ø12mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 57 N | 42 N |
| 0.7 MPa | 79 N | 59 N |
| Max (@1.0 MPa) | 12 kgf | |
The ACE12X125 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 ACP12X125
| ACP | DIN compact cylinder (double-acting, discontinued). |
|---|---|
| 12 | 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).
Where the Airtac ACP Compact Cylinder ACP12X125 Is Used
Lab sample ejector
The 56.5 N push at 0.5 MPa is enough to eject small vials or slides from a nest, and the long 125 mm stroke clears a full tray row in one move.
Small-parts ejection from a press die
A slim 12 mm body with a 125 mm reach pushes finished micro-components off the die face; the short body fits where an ISO 15552 profile cylinder cannot.
Sensor-checked gating on a test bench
With the optional -S magnet, CMSE or DMSE switches confirm gate open and closed positions on an electronics test fixture running at 30-500 mm/s.
Replacing the Airtac ACP Compact Cylinder ACP12X125 with the ACE12X125
At 12 mm bore you are at the bottom of the range: 56.5 N push at 0.5 MPa. If your load needs more, step up to the 16 mm bore (100.5 N push at 0.5 MPa) or 20 mm bore (157.1 N). For lighter, shorter travel, the 12 mm bore with a 50 mm standard stroke is the stock option. Because the piston drifts when air is lost, add a rod lock or pilot check valve if the load must stay put. Mounting brackets from the ISO 21287 family bolt straight on, and the -S magnet code enables CMSE / DMSE switch sensing. Order ACE12X125 as the current replacement and verify its ISO 21287 dimensions.
Replacement checklist
- ✓ Current-production ACE → ACE12X125
- ✓ 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 ACP12X125 FAQ
Push is 56.5 N and pull is 42.4 N at 0.5 MPa; at 0.7 MPa push rises to 79.2 N and pull to 59.4 N, with a theoretical maximum of 11.5 kgf at 1.0 MPa. It is double acting with a 12 mm bore, 125 mm made-to-order stroke, 6 mm rod with female M3x0.5 thread, M5x0.8 port, operating pressure 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, and fixed TPU bumpers at both ends.
Order ACE12X125, the ISO 21287 successor made by swapping the P for an E. It matches the same 12 mm bore, 125 mm stroke and force class with a short body and a compatible mounting family (FA/FB flange, LB foot, CA/CB clevis). Because the ACP was DIN-standard, confirm the ISO 21287 mounting dimensions against your fixture before swapping.
Request a Quote for the ACE12X125
Send us the quantity and destination. We confirm price, stock and lead time on the ACE12X125 replacement — usually within 7-8 hours.