
The AirTAC Airtac ACED Double-acting Compact Cylinder ACED12X25S is a genuine double acting, double rod ISO 21287 compact air cylinder with a Ø12mm bore and 25mm stroke, M5×0.8 air ports and a hard-anodized aluminium body. Its short compact envelope saves about 50% of the mounting length of an ISO 15552 profile cylinder.
A double acting compact cylinder built to ISO 21287, the ACED12X25S has a piston rod leaving both covers, so the 12 mm bore delivers an identical 42.4 N in each direction at 0.5 MPa (59.4 N at 0.7 MPa). The through-rod resists rotation and light side load, and the rear rod can carry a sensor flag. This -S model carries the optional magnet, so CMSE or DMSE reed and solid-state switches can be clipped onto the body slot for end-of-stroke detection.
The hard-anodized aluminium body with a hard-chrome-plated S45C rod runs at 0.15-1.0 MPa (22-145 psi) and 30-500 mm/s, with a fixed TPU bumper at each end. The short body saves about 50% of the mounting length of an ISO 15552 profile cylinder, which is why it suits slim pick-and-place heads and compact test fixtures. As a rule of thumb, plan on roughly 25 N of usable push, which lifts about 2.2 kg vertically with a 2:1 margin.
| Model | Airtac ACED Double-acting Compact Cylinder ACED12X25S |
|---|---|
| Series | ACED compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø12 mm |
| Stroke | 25 mm |
| Acting type | Double acting, double rod |
| 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 TPU bumper (both ends) |
| Max standard stroke | Up to 50 mm |
Specifications follow the official AirTAC ACE-series (ISO 21287) datasheet. Body: hard-anodized aluminium alloy; piston rod: S45C carbon steel with hard-chrome plating. Rod type: female thread (blank) or male thread (B). Thread options: PT (blank) / G. A built-in magnet is OPTIONAL — add the -S code to fit CMSE / DMSE position sensors.
| Pressure | Force (both ways) |
|---|---|
| 0.5 MPa | 42 N |
| 0.7 MPa | 59 N |
| Max (@1.0 MPa) | 9 kgf |
Double-rod: a rod exits both covers, so output force is equal in both directions (rod-side area used).
| ACED | ISO 21287 compact cylinder (double-rod). |
|---|---|
| 12 | Bore size in mm. |
| ×25 | Stroke length in mm. |
| S | Optional built-in magnet for CMSE / DMSE sensors (omit for no magnet). |
| B | Rod type: B = male thread; blank = female thread. |
ACE-family variants: ACE (double acting), ASE / ATE (single acting push / pull), ACED (double rod), ACEJ (adjustable stroke), TACE / TACED (non-rotating twin-guide yoke). Mounting accessories: FA / FB flange, LB foot, CA / CB clevis, CR, SDB pivot, FTC; plus I and Y knuckles. Thread PT (blank) / G.
Ejects finished watch or connector pins weighing under 50 g from a mold or nest, with the rear rod returning a position flag for the PLC via a DMSE switch.
The 25 mm stroke advances microscope slides or vial trays one station at a time; the through-rod keeps the carrier square without an anti-rotation guide.
Confirms a small door or guard is fully closed on packaging machines; the fitted magnet feeds a CMSE switch signal at each end of travel.
At 42.4 N per direction, this bore covers light clamping, part presence checks and small vertical lifts around 2 kg. Step down is not available in this series, so if the load is under about 15 N a smaller actuator type may suit better; step up to the ACED16X25S gives 75.4 N at 0.5 MPa for heavier tooling. Remember the piston drifts if air is lost, so add a rod lock or pilot check valve for a held load. The female M3x0.5 rod thread takes standard rod knuckles (I or Y), and FA/FB flange or LB foot brackets bolt to the ISO 21287 face.
Quick checklist
Because a rod exits both covers, force is equal in both directions: 42.4 N at 0.5 MPa and 59.4 N at 0.7 MPa, with a maximum of 8.6 kgf at 1.0 MPa. In practice, budget about 25 N of usable work, enough to lift roughly 2.2 kg vertically with a 2:1 margin.
The ISO 21287 short body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it fits tight gantries and jigs. The S in the model code means the magnet is fitted, so CMSE or DMSE switches can be mounted on the body slots; without the -S code there is no magnet. A fixed TPU bumper at each end absorbs end-of-stroke shock.
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