Airtac ACEJ125 Adjustable Compact Cylinder ACEJ125X225-10S
The AirTAC Airtac ACEJ125 Adjustable Compact Cylinder ACEJ125X225-10S 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 ACEJ125X225-10S
The ACEJ125X225-10S 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 10 mm on site, giving a usable range of 215-225 mm without changing the cylinder. At the 125 mm bore it delivers 6135.9 N push and 5890.5 N pull at 0.5 MPa, rising to 8590.3 N push at 0.7 MPa, with a theoretical peak of 1251.4 kgf at 1.0 MPa. In practice, plan on roughly 3682 N (about 375 kgf) of real work at 0.5 MPa, which corresponds to lifting around 313 kg vertically with a 2:1 margin.
The short ISO 21287 body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so this 225 mm stroke unit still fits presses, gantries and heavy jigs where a full-length body will not. A hard-anodized aluminium body carries an S45C hard-chrome plated 25 mm rod, fixed TPU bumpers absorb end-of-stroke energy, and the fitted -S magnet accepts CMSE / DMSE reed or solid-state switches for end-position sensing. Operating window is 0.15-1.0 MPa (22-145 psi), 30-500 mm/s, -20 to +70 C.
Airtac ACEJ125 Adjustable Compact Cylinder ACEJ125X225-10S Technical Specifications
| Model | Airtac ACEJ125 Adjustable Compact Cylinder ACEJ125X225-10S |
|---|---|
| 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 ACEJ125X225-10S
| ACEJ | ISO 21287 compact cylinder (adjustable-stroke). |
|---|---|
| 125 | Bore size in mm. |
| ×225 | Stroke length in mm. |
| -10 | 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 ACEJ125X225-10S Is Used
Heavy pressing and forming
A 215-225 mm adjustable stroke with 6135.9 N push at 0.5 MPa suits bench-top pressing of bushings, bearings and inserts in automotive and appliance sub-assembly cells.
Pallet and fixture clamping
Clamps heavy weld fixtures or pallets on machining lines; the 10 mm stop screw lets one cylinder serve fixtures of slightly different heights without re-ordering.
Vertical lift-and-lower stations
Lifts parts of roughly 313 kg vertically with a 2:1 margin at 0.5 MPa; CMSE / DMSE switches on the fitted -S magnet confirm top and bottom position to the PLC.
Is the Airtac ACEJ125 Adjustable Compact Cylinder ACEJ125X225-10S the Right Cylinder?
At 6135.9 N push at 0.5 MPa, this bore sits two steps above the 100 mm bore (3927.0 N) when you need the extra thrust for heavy clamping or pressing; if the load is lighter, the 80 mm bore (2513.3 N) costs less and fits tighter. Remember the stop screw is a mechanical end stop only - on air loss the piston drifts, so add a separate valve or lock for load holding. FA flange or LB foot mounting bolts to the ISO 21287 face, and the fitted -S magnet means CMSE / DMSE switches can be added at any time. Female M16x2.0 rod thread, 1/4" PT ports.
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 ACEJ125X225-10S FAQ
Push is 6135.9 N and pull 5890.5 N at 0.5 MPa; at 0.7 MPa push rises to 8590.3 N, and the theoretical maximum is 1251.4 kgf at 1.0 MPa. The -10 code is a 10 mm adjustment window: an external stop screw shortens the 225 mm extend stroke by up to 10 mm, so the working range is 215-225 mm. It is a mechanical end stop, not a mid-stroke lock - on air loss the piston still drifts. Speed range is 30-500 mm/s at 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 a 225 mm stroke unit still fits tight gantries and guards. Fixed TPU bumpers at both ends absorb end-of-stroke energy. This model carries the optional -S magnet, so CMSE / DMSE reed or solid-state switches mount directly in the body slots; without the -S code there is no magnet. FA flange and LB foot brackets bolt straight to the ISO 21287 mounting face.
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