This model is discontinued
AirTAC has phased out the ACP series. You can still order this code here: we ship the current replacement ACE12X25FB, 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 ACP12X25FB is a double acting DIN-standard tight/compact air cylinder with a Ø12mm bore and 25mm stroke, M5×0.8 air ports and a hard-anodized aluminium body. This model is discontinued — the current-production replacement is the ACE12X25FB (ISO 21287 ACE), in the same bore, stroke and force class.
The ACP12X25FB is a double acting DIN-standard compact cylinder with a 12 mm bore and 25 mm stroke, delivering 56.5 N of push force and 42.4 N of pull at 0.5 MPa (79.2 N / 59.4 N at 0.7 MPa). Its short ISO 21287-class body saves roughly 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into tight fixtures where a full-length body cannot. The hard-anodized aluminium body carries an S45C hard-chrome rod with a fixed TPU bumper at each end.
This model has no magnet fitted; the optional -S code adds one for CMSE / DMSE switches. The ACP family is discontinued - the current-production direct is the ACE12X25, so confirm ISO 21287 mounting dimensions before swapping.
| Model | Airtac ACP Compact Cylinder ACP12X25FB |
|---|---|
| Series | ACP DIN compact cylinder (discontinued) |
| Replacement | ACE12X25FB |
| Bore size | Ø12 mm |
| Stroke | 25 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 ACE12X25FB (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 | 57 N | 42 N |
| 0.7 MPa | 79 N | 59 N |
| Max (@1.0 MPa) | 12 kgf | |
The ACE12X25FB 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). |
|---|---|
| 12 | Bore size in mm. |
| ×25 | 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 56.5 N push at 0.5 MPa is enough to hold small aluminium or plastic workpieces in drilling and milling jigs, and the 25 mm stroke clears part loading quickly.
With the optional -S magnet and CMSE / DMSE switches, the short body works as a compact part-present actuator inside electronics assembly fixtures.
A 34 N usable force at 0.5 MPa nudges small cartons or blister packs off a conveyor lane where a larger bore would be oversized.
At 56.5 N push at 0.5 MPa this 12 mm bore suits light clamping and small part ejection; step down is not available (12 mm is the smallest bore), while the 16 mm bore gives 100.5 N at 0.5 MPa if you need more force. The FB flange mounts the body face-on, and the female M3x0.5 rod thread accepts I/Y knuckles. Note that the piston drifts when air is lost - add a rod lock or pilot check valve for a held load. Order the ACE12X25 for current production.
Replacement checklist
Push is 56.5 N and pull is 42.4 N at 0.5 MPa; at 0.7 MPa it reaches 79.2 N push and 59.4 N pull, with a theoretical maximum of 11.5 kgf at 1.0 MPa. It is double acting, runs on air filtered to 40 um at 0.15-1.0 MPa (22-145 psi), proof pressure 1.5 MPa (215 psi), temperature -20 to +70 C, speed 30-500 mm/s, with a 6 mm rod, M3x0.5 female rod thread and M5x0.8 ports.
Order the ACE12X25, the current ISO 21287 successor made by swapping the P for an E. It matches the same 12 mm bore, 25 mm stroke and force class, but because the ACP was DIN-standard you should confirm the ISO 21287 mounting dimensions against your FB flange drilling before swapping.
Send us the quantity and destination. We confirm price, stock and lead time on the ACE12X25FB replacement — usually within 7-8 hours.