Airtac ACED Double-acting Compact Cylinder ACED125X40S
The AirTAC Airtac ACED Double-acting Compact Cylinder ACED125X40S is a genuine double acting, double rod ISO 21287 compact air cylinder with a Ø125mm bore and 40mm stroke, 1/4" 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.
- BoreØ125 mm
- Stroke40 mm
- Port size1/4"
- Acting typeDouble acting, double rod
- Rod threadM16×2.0
- CushionFixed TPU bumper (both ends)
- 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 ACED Double-acting Compact Cylinder ACED125X40S
A double acting compact cylinder built to ISO 21287, the ACED125X40S pushes a 125 mm bore through a 40 mm stroke with a rod leaving BOTH covers, so thrust is identical on the way out and the way back: 5890.5 N at 0.5 MPa and 8246.7 N at 0.7 MPa, equal in each direction because both strokes work on the rod-side area. The through-rod also resists rotation and side load and gives a symmetric mounting face, and the fixed TPU bumper at each end absorbs end-of-stroke shock.
The short ISO 21287 body saves about 50% of the mounting length of an ISO 15552 profile cylinder, which matters when a 40 mm stroke has to sit inside a deep-drawn press fixture or a guarded gantry. The hard-anodized aluminium body carries a hard-chrome plated S45C rod, runs 30-500 mm/s on air filtered to 40 um at 0.15-1.0 MPa (22-145 psi), and this -S model carries the optional magnet, so CMSE / DMSE switches can be clipped on for end-position sensing. With the 5890.5 N rating, planning around 60% of it leaves roughly 3534 N of real work force, and halving the 600 kgf equivalent gives a vertical lift of about 180 kg with a 2:1 margin.
Airtac ACED Double-acting Compact Cylinder ACED125X40S Technical Specifications
| Model | Airtac ACED Double-acting Compact Cylinder ACED125X40S |
|---|---|
| Series | ACED compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø125 mm |
| Stroke | 40 mm |
| Acting type | Double acting, double rod |
| Port size | 1/4" |
| Rod thread | M16×2.0 |
| 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 300 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.
Theoretical Output Force (Ø125mm)
| Pressure | Force (both ways) |
|---|---|
| 0.5 MPa | 5890 N |
| 0.7 MPa | 8247 N |
| Max (@1.0 MPa) | 1201 kgf |
Double-rod: a rod exits both covers, so output force is equal in both directions (rod-side area used).
Model Code: Airtac ACED Double-acting Compact Cylinder ACED125X40S
| ACED | ISO 21287 compact cylinder (double-rod). |
|---|---|
| 125 | 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.
Where the Airtac ACED Double-acting Compact Cylinder ACED125X40S Is Used
Deep-drawn press fixture clamping
The 5890.5 N equal thrust in both directions clamps a heavy automotive stamping die segment and retracts with the same force, and the 40 mm stroke fits the shallow pocket of the fixture plate.
Pallet lift-and-lower post
A through-rod on a food-plant pallet elevator carries the load on the front rod and a guide flag on the rear rod, lifting about 180 kg vertically with a 2:1 margin at 0.5 MPa.
Reciprocating shuttle on a machining line
The double rod resists rotation and side load as it shuttles a gearbox housing between two CNC stations at 30-500 mm/s, with CMSE switches reading both end positions via the fitted magnet.
Is the Airtac ACED Double-acting Compact Cylinder ACED125X40S the Right Cylinder?
At 125 mm bore this is the top of the ACED range: 5890.5 N at 0.5 MPa in both directions. If the job needs less, the ACED100X40S delivers 3769.9 N at the same pressure; if you need more headroom there is no larger ACED bore, so consider parallel units or confirm a larger frame from the datasheet. The 40 mm stroke sits well inside the 300 mm maximum standard stroke for bore 125, so it is a catalogue item, not a made-to-order length.
Rod end is a female M16x2.0 thread and the port is 1/4" PT. Because a plain double-rod cylinder drifts when air is lost, add a rod lock or pilot check valve if the load must stay put. FA/FB flange, LB foot and FTC brackets plus I/Y rod knuckles bolt straight to the ISO 21287 face, and the fitted -S magnet accepts CMSE / DMSE switches.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Short stroke fits the compact body
- ✓ Port/thread type (PT / G)
- ✓ Add -S if you need the magnet for sensors
- ✓ Rod type (female / male B) & mount (FA/LB/CA)
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Compact body: keep the stroke short and avoid side load on the rod.
- check Do not dismantle the threaded front/back covers.
- check Keep speed within the rated range; the TPU bumper absorbs stroke-end energy.
- check Installation by qualified personnel per AirTAC docs.
Airtac ACED Double-acting Compact Cylinder ACED125X40S FAQ
Yes. Because a rod exits both covers, every stroke works on the rod-side area, so output is equal in both directions: 5890.5 N at 0.5 MPa and 8246.7 N at 0.7 MPa, with a maximum of 1201.3 kgf at 1.0 MPa. Operating pressure is 0.15-1.0 MPa (22-145 psi) with a 1.5 MPa (215 psi) proof pressure.
The ISO 21287 short body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it fits tight guards and fixtures, and the fixed TPU bumper at each end absorbs end-of-stroke energy. The S in ACED125X40S means the optional magnet is fitted, so CMSE / DMSE reed or solid-state switches can be mounted in the body slots; without the -S code there is no magnet.
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Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
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