
The AirTAC Airtac ACED Double-acting Compact Cylinder ACED40X25 is a genuine double acting, double rod ISO 21287 compact air cylinder with a Ø40mm bore and 25mm stroke, 1/8" 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 ACED40X25 pushes a 40 mm bore through a 25 mm stroke with a rod leaving BOTH covers, so thrust is identical on every stroke: 571.8 N at 0.5 MPa and 800.5 N at 0.7 MPa either way. The through-rod resists rotation and modest side load, and its rear end doubles as a mounting point for a sensor flag. Air supply is 0.15-1.0 MPa (22-145 psi), speed range 30-500 mm/s, with a fixed TPU bumper at each end to soften the stroke.
The hard-anodized aluminium body with a burnished bore pairs with an S45C hard-chrome rod for long service life, and the short ISO 21287 frame saves roughly 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into tight guarding and fixture plates. At 0.5 MPa plan on about 343 N of real work once you keep a margin, which lifts roughly 29 kg vertically with a 2:1 factor. FA/FB flanges, LB feet and FTC brackets bolt straight to the ISO 21287 face. Need position feedback? Order the -S code to add the optional magnet for CMSE / DMSE switches; without -S no magnet is fitted.
| Model | Airtac ACED Double-acting Compact Cylinder ACED40X25 |
|---|---|
| Series | ACED compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø40 mm |
| Stroke | 25 mm |
| Acting type | Double acting, double rod |
| Port size | 1/8" |
| Rod thread | M8×1.25 |
| 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 200 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 | 572 N |
| 0.7 MPa | 800 N |
| Max (@1.0 MPa) | 117 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). |
|---|---|
| 40 | 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.
The equal 571.8 N thrust in both directions ejects machined aluminium housings off a fixture and returns the tooling at the same force, no spring return needed.
A short-stroke 40 mm double-rod unit presses dowel pins into plastic brackets on an assembly bench, where the 25 mm stroke and compact body fit under a low gantry.
The rear rod carries a flag past a CMSE or DMSE switch (with the optional -S magnet ordered) to confirm slide position on a packaging machine cam station.
At 571.8 N at 0.5 MPa the 40 mm bore sits between the 32 mm (345.6 N) and 50 mm (881.2 N) classes, so step down for lighter clamping or up for heavier presses. The 25 mm stroke is well inside the 200 mm standard limit for this bore. Remember the piston drifts if air is lost, so add a rod lock or pilot check for held loads. Female M8x1.25 rod thread and 1/8" PT ports come standard; choose the -S magnet code only if CMSE / DMSE switching is required.
Quick checklist
Because a rod exits both covers, force is EQUAL both ways: 571.8 N at 0.5 MPa, 800.5 N at 0.7 MPa, and a maximum of 116.6 kgf at 1.0 MPa on the rod-side area. Both strokes of the 40 mm bore, 25 mm stroke cylinder use the same figures.
The ISO 21287 short frame saves about 50% of the mounting length of an ISO 15552 profile cylinder, and FA/FB flanges, LB feet, FTC brackets plus I and Y rod knuckles bolt to the standard face. A fixed TPU bumper at each end absorbs end-of-stroke shock. The magnet is the optional -S code; order it to run CMSE / DMSE switches, otherwise no magnet is installed.
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