Airtac ACED Double-acting Compact Cylinder ACED40X125S
The AirTAC Airtac ACED Double-acting Compact Cylinder ACED40X125S is a genuine double acting, double rod ISO 21287 compact air cylinder with a Ø40mm bore and 125mm 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.
- BoreØ40 mm
- Stroke125 mm
- Port size1/8"
- Acting typeDouble acting, double rod
- Rod threadM8×1.25
- 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 ACED40X125S
A double acting compact cylinder built to ISO 21287, the ACED40X125S pushes a 40 mm bore through a 125 mm stroke with a piston rod leaving BOTH covers. Because each side of the piston sees the rod-side area, output force is identical in both directions: 571.8 N at 0.5 MPa and 800.5 N at 0.7 MPa, either way. The S in the code means the optional -S magnet is fitted, so CMSE or DMSE reed and solid-state switches can be clipped onto the body slots for end-of-stroke signalling straight out of the box.
The short ISO 21287 body saves about 50% of the mounting length of an ISO 15552 profile cylinder, which is why this bore class fits so well inside machine guards, sliding doors and tight gantry frames. A hard-anodized aluminium body with a roller-burnished bore runs against an S45C hard-chrome plated 12 mm rod, while fixed TPU bumpers at both ends absorb end-of-stroke shock. Practical sizing: at 0.5 MPa plan on roughly 340 N of usable work force, and the through-rod will carry about 29 kg vertically with a 2:1 margin - enough for a small pallet clamp or a loaded test fixture.
Airtac ACED Double-acting Compact Cylinder ACED40X125S Technical Specifications
| Model | Airtac ACED Double-acting Compact Cylinder ACED40X125S |
|---|---|
| Series | ACED compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø40 mm |
| Stroke | 125 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.
Theoretical Output Force (Ø40mm)
| 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).
Model Code: Airtac ACED Double-acting Compact Cylinder ACED40X125S
| ACED | ISO 21287 compact cylinder (double-rod). |
|---|---|
| 40 | Bore size in mm. |
| ×125 | 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 ACED40X125S Is Used
Reciprocating gate drive
A rod on each cover lets you bolt the gate linkage to the rear rod while the front rod drives the door, balancing the 571.8 N push and pull across a 125 mm slide inside a guard panel.
Symmetric press fixture
Equal force in both directions makes this bore ideal for a jig that clamps a housing, flips it, and clamps again - about 29 kg of vertical capacity with a 2:1 margin at 0.5 MPa.
Position-monitored elevator stage
With the fitted -S magnet, CMSE or DMSE switches confirm both end positions of a 125 mm lift stage, and the back rod carries a flag plate for an external proximity sensor.
Is the Airtac ACED Double-acting Compact Cylinder ACED40X125S the Right Cylinder?
At 571.8 N per direction, bore 40 sits between bore 32 (345.6 N at 0.5 MPa) and bore 50 (881.2 N at 0.5 MPa) - choose 32 if your clamp force budget is under 350 N, step to 50 when you need nearly double. The 125 mm stroke is well inside the 200 mm maximum standard stroke for this bore, so it ships as a catalogue item. Remember the through-rod does not lock anything: if the load must stay put when air is lost, add a rod lock or pilot check valve. Mounting drops onto the ISO 21287 face with FA/FB flanges, LB feet or FTC brackets, and I/Y rod knuckles suit the 12 mm female M8x1.25 thread.
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 ACED40X125S FAQ
Output is equal both ways because the double-rod piston exposes the rod-side area on each stroke: 571.8 N at 0.5 MPa, 800.5 N at 0.7 MPa, and up to 116.6 kgf at 1.0 MPa. Operating pressure is 0.15-1.0 MPa (22-145 psi), proof pressure 1.5 MPa (215 psi), speed range 30-500 mm/s, port 1/8" PT, rod thread female M8x1.25.
The ISO 21287 short body takes about 50% less mounting length than an ISO 15552 profile cylinder, so it slips into shallow machine frames. The S in ACED40X125S means the optional -S magnet is fitted, so CMSE and DMSE switches mount directly in the body slots; models ordered without -S carry no magnet. Fixed TPU bumpers at both ends soften the stroke ends - they do not hold or brake a load.
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1-Year Warranty
Covers non-human-caused product damage.
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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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