Airtac ACEJ125 Adjustable Compact Cylinder ACEJ125X225-100S
The AirTAC Airtac ACEJ125 Adjustable Compact Cylinder ACEJ125X225-100S is a genuine double acting, adjustable stroke ISO 21287 compact air cylinder with a Ø125mm bore and 225mm 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
- Stroke225 mm
- Port size1/4"
- Acting typeDouble acting, adjustable stroke
- 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 ACEJ125 Adjustable Compact Cylinder ACEJ125X225-100S
The ACEJ125X225-100S is a double acting ISO 21287 compact cylinder with an adjustable extend stroke: an external stop screw trims the 225 mm stroke by up to 100 mm on site, giving a usable range of 125-225 mm without swapping the cylinder. At 0.5 MPa the 125 mm bore delivers 6135.9 N push and 5890.5 N pull, the heaviest force class in the ACEJ range, with a fixed TPU bumper at each end absorbing end-of-stroke shock.
The short ISO 21287 body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so this 6-tonne-class thruster still fits heavy presses and gantries where a full-length profile body will not. As a rule of thumb, plan for about 3680 N (roughly 375 kg) of real work at 0.5 MPa, and expect it to lift about 313 kg vertically with a 2:1 margin. The -S code on this model means the magnet is fitted, so CMSE / DMSE reed or solid-state switches can be mounted in the body slots for end-of-stroke signalling.
Airtac ACEJ125 Adjustable Compact Cylinder ACEJ125X225-100S Technical Specifications
| Model | Airtac ACEJ125 Adjustable Compact Cylinder ACEJ125X225-100S |
|---|---|
| Series | ACEJ compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø125 mm |
| Stroke | 225 mm |
| Acting type | Double acting, adjustable stroke |
| 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 | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 6136 N | 5890 N |
| 0.7 MPa | 8590 N | 8247 N |
| Max (@1.0 MPa) | 1251 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac ACEJ125 Adjustable Compact Cylinder ACEJ125X225-100S
| ACEJ | ISO 21287 compact cylinder (adjustable-stroke). |
|---|---|
| 125 | Bore size in mm. |
| ×225 | Stroke length in mm. |
| -100 | 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 (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 ACEJ125 Adjustable Compact Cylinder ACEJ125X225-100S Is Used
Heavy stamping and forming presses
With 6135.9 N push at 0.5 MPa and 8590.3 N at 0.7 MPa, the 125 mm bore drives punching and coining heads on compact press frames, and the 100 mm window lets one cylinder serve several die heights between 125 and 225 mm.
Pallet clamp and lift fixtures
A pull force of 5890.5 N at 0.5 MPa grips heavy pallets or castings in automated cells, while the short ISO 21287 body keeps the fixture inside tight guarding that a full-length profile cylinder would overflow.
Vertical lift-and-lower gantries
Running at 30-500 mm/s, the cylinder hoists loads of roughly 313 kg vertically with a 2:1 margin on its 0.5 MPa push rating, and the fitted -S magnet feeds CMSE or DMSE switch signals to the PLC at both trim positions.
Is the Airtac ACEJ125 Adjustable Compact Cylinder ACEJ125X225-100S the Right Cylinder?
Size this bore when your tooling needs more than the 3927 N push of a 100 mm bore at 0.5 MPa; if your load is lighter, the ACEJ100X225-100S gives 3927 N push and 3769.9 N pull at the same stroke and window. Remember the stop screw only shortens the extend stroke and is a mechanical end stop, not a mid-stroke lock - on air loss the piston still drifts, so add a separate holding valve for suspended loads. Mount with FA flange or LB foot brackets on the ISO 21287 face, add I or Y rod knuckles for swivelling tooling, and keep the -S magnet in mind if CMSE / DMSE switch feedback is planned later.
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 ACEJ125 Adjustable Compact Cylinder ACEJ125X225-100S FAQ
At 0.5 MPa it pushes 6135.9 N and pulls 5890.5 N; at 0.7 MPa those rise to 8590.3 N push and 8246.7 N pull, with a theoretical maximum of 1251.4 kgf at 1.0 MPa. The -100 code is a 100 mm adjustment window: an external stop screw shortens the 225 mm extend stroke by up to 100 mm, so the working range is 125-225 mm. It shortens the stroke only - it never extends past 225 mm - and it is a mechanical end stop, not a load-holding brake. Operating pressure is 0.15-1.0 MPa (22-145 psi), proof pressure 1.5 MPa (215 psi), speed 30-500 mm/s, and the 1/4" port suits the 125 mm bore.
It is an ISO 21287 compact cylinder with a hard-anodized aluminium body and S45C hard-chrome-plated 25 mm rod, about 50% shorter in mounting length than an ISO 15552 profile cylinder of the same bore. A fixed TPU bumper sits at both ends to soften end-of-stroke impact; it only decelerates and never locks or holds a load. FA flange and LB foot mounts bolt to the standard ISO 21287 face, with I and Y rod knuckles available. The magnet is the optional -S feature, which this model carries, enabling CMSE / DMSE reed or solid-state switches in the body slots; air should be filtered to 40 um and ambient temperature kept between -20 and +70 C.
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