Airtac ACEJ80~100 Adjustable Compact Cylinder ACEJ80X125-40S
The AirTAC ACEJ80~100 Adjustable Compact Cylinder ACEJ80X125-40S is a genuine double acting, double rod, adjustable stroke ISO 21287 compact air cylinder with a Ø80mm 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.
- BoreØ80 mm
- Stroke125 mm
- Port size1/8"
- Acting typeDouble acting, double rod, adjustable stroke
- Rod threadM12×1.75
- 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 ACEJ80~100 Adjustable Compact Cylinder ACEJ80X125-40S
This 80 mm bore ACEJ is a double acting ISO 21287 compact cylinder with an adjustable extend stroke: an external stop screw trims the 125 mm stroke by up to 40 mm on site, giving a usable range of 85-125 mm. At 0.5 MPa it pushes 2513.3 N and pulls 2356.2 N, rising to 3518.6 N at 0.7 MPa. The short body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into presses, guarding and gantries where a full-length body will not fit.
The hard-anodized aluminium body carries a 20 mm S45C hard-chrome rod, a fixed TPU bumper decelerates at both ends, and the fitted -S magnet lets CMSE / DMSE switches report end positions. FA flange, LB foot and I/Y knuckles bolt to the standard ISO 21287 face.
Airtac ACEJ80~100 Adjustable Compact Cylinder ACEJ80X125-40S Technical Specifications
| Model | Airtac ACEJ80~100 Adjustable Compact Cylinder ACEJ80X125-40S |
|---|---|
| Series | ACEJ compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø80 mm |
| Stroke | 125 mm |
| Acting type | Double acting, double rod, adjustable stroke |
| Port size | 1/8" |
| Rod thread | M12×1.75 |
| 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 (Ø80mm)
| Pressure | Force (both ways) |
|---|---|
| 0.5 MPa | 2356 N |
| 0.7 MPa | 3299 N |
| Max (@1.0 MPa) | 481 kgf |
ACEJ is double-rod: the rear rod that carries the stroke adjuster exits the rear cover, so both piston faces lose rod area. The rod-side (annular) area is used for both directions (conservative).
Model Code: Airtac ACEJ80~100 Adjustable Compact Cylinder ACEJ80X125-40S
| ACEJ | ISO 21287 compact cylinder (adjustable-stroke). |
|---|---|
| 80 | Bore size in mm. |
| ×125 | Stroke length in mm. |
| -40 | Adjustable stroke window (mm the extend stroke can be shortened on site). |
| 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 (double rod, 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 ACEJ80~100 Adjustable Compact Cylinder ACEJ80X125-40S Is Used
Clamp fixture on a CNC machining line
Roughly 1508 N of usable clamp force at 0.5 MPa holds steel housings in a milling fixture, with the 85-125 mm adjustable range tuned to each part family.
Short-station press or staking head
Up to 3518.6 N at 0.7 MPa presses bearings or stakes terminals where the compact body fits inside a tight press frame that excludes a full-length profile cylinder.
Is the Airtac ACEJ80~100 Adjustable Compact Cylinder ACEJ80X125-40S the Right Cylinder?
The 40 mm window suits fixtures where the final stroke is tuned after installation - remember the stop screw only shortens the extend stroke and drifts on air loss, so it is not a load-holding lock. The -S magnet is already fitted here; order CMSE or DMSE switches separately. FA flange or LB foot mounting matches standard ISO 21287 fixtures, and the 1/8" port keeps air supply generous at 30-500 mm/s.
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 ACEJ80~100 Adjustable Compact Cylinder ACEJ80X125-40S FAQ
Push is 2513.3 N and pull 2356.2 N at 0.5 MPa; at 0.7 MPa push reaches 3518.6 N, with a theoretical maximum of 512.6 kgf at 1.0 MPa. It runs on air filtered to 40 um at 0.15-1.0 MPa (22-145 psi), proof pressure 1.5 MPa (215 psi), temperature -20 to +70 C, speed 30-500 mm/s, with a 20 mm rod, 1/8" port and female M12x1.75 rod thread.
The -40 code means an external stop screw shortens the 125 mm extend stroke by up to 40 mm, so the working range is 85-125 mm; it is a mechanical end stop, not a mid-stroke lock, so the rod still drifts if air is lost. The S code means the magnet is fitted, so CMSE or DMSE reed or solid-state switches can be mounted in the body slots to signal end positions. The fixed TPU bumper at each end absorbs end-of-stroke energy, and FA flange or LB foot plates bolt to the standard ISO 21287 mounting face.
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