
The AirTAC Airtac ACED Double-acting Compact Cylinder ACED25X40B is a genuine double acting, double rod ISO 21287 compact air cylinder with a Ø25mm bore and 40mm 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 with a rod leaving both covers, the ACED25X40B pushes with identical force on each stroke because both sides work on the rod-side area: 206.2 N at 0.5 MPa and 288.6 N at 0.7 MPa. The 25 mm bore drives a 10 mm through-rod over a 40 mm stroke, with a fixed TPU bumper at each end and air supply of 0.15-1.0 MPa (22-145 psi).
The ISO 21287 short body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into tight fixtures and guarding. The through-rod resists rotation and lets the rear rod carry a sensor flag, while the male B-code rod thread suits external knuckle joints. For sizing: 0.6 of the 0.5 MPa force gives roughly 124 N of usable work, about 12.6 kg equivalent. If you need position sensing, order the -S variant - this model has no magnet, so CMSE / DMSE switches cannot be fitted.
| Model | Airtac ACED Double-acting Compact Cylinder ACED25X40B |
|---|---|
| Series | ACED compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø25 mm |
| Stroke | 40 mm |
| Acting type | Double acting, double rod |
| Port size | M5×0.8 |
| Rod thread | M6×1.0 |
| 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 150 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 | 206 N |
| 0.7 MPa | 289 N |
| Max (@1.0 MPa) | 42 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). |
|---|---|
| 25 | Bore size in mm. |
| ×40 | 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 206.2 N force in both directions lets a small electronics fixture eject and retract PCB trays at identical speed, with the 40 mm stroke matching shallow drawer slides.
The male B rod thread and rotation-resistant through-rod drive a pivot clamp on a machining fixture, holding about 12.6 kg of effective clamp load at 0.5 MPa.
On a bottling line gate, the rear rod carries a flag plate so a second switch position is available once the -S magnet variant is ordered instead of this non-magnetic model.
At 206.2 N per side at 0.5 MPa, this bore suits clamping and transfer tasks up to roughly 12.6 kg of practical vertical load with a 2:1 margin. Step down to a 20 mm bore (117.8 N) for lighter pick-and-place, or up to 32 mm (345.6 N) when the part weight grows. Note that a plain double-rod cylinder drifts when air is lost - add a rod lock or pilot check for held loads. Mounting brackets FA/FB flange, LB foot and FTC plus I/Y rod knuckles bolt to the ISO 21287 face; the 40 mm stroke sits well inside the 150 mm standard range for this bore.
Quick checklist
Because a rod exits both covers, output is equal each way: 206.2 N at 0.5 MPa and 288.6 N at 0.7 MPa on both strokes, with a peak of 42.0 kgf at 1.0 MPa. Speed range is 30-500 mm/s, pressure 0.15-1.0 MPa (22-145 psi), proof 1.5 MPa (215 psi), and the M5x0.8 port is fixed by the 25 mm bore.
The ISO 21287 build is about 50% shorter in mounting length than an ISO 15552 profile cylinder, with a hard-anodized aluminium body and fixed TPU bumpers at both stroke ends. Switches are not possible on this code: the magnet is the optional -S variant, so order ACED25X40SB if you need CMSE / DMSE sensing.
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