Airtac ACEJ125 Adjustable Compact Cylinder ACEJ125X225-30S
The AirTAC Airtac ACEJ125 Adjustable Compact Cylinder ACEJ125X225-30S 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 ACEJ125X225-30S
A double acting ISO 21287 compact cylinder, the ACEJ125X225-30S pairs a 125 mm bore with a 225 mm stroke that an external stop screw trims by up to 30 mm, giving a usable extend range of 195-225 mm. At 0.5 MPa it pushes 6135.9 N and pulls 5890.5 N, and the short body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so heavy clamping fits into frames where a full-length body will not. The hard-anodized aluminium body carries a hard-chrome plated S45C rod with a female M16x2.0 thread.
Plan real work at roughly 3680 N (about 375 kg) rather than the full 0.5 MPa rating, and expect about 313 kg of vertical lift with a 2:1 margin. This model carries the optional -S magnet, so CMSE / DMSE switches can be mounted for end-of-stroke sensing, and FA flange or LB foot mounts bolt straight to the ISO 21287 face. Air supply is 0.15-1.0 MPa (22-145 psi), speed 30-500 mm/s, with a fixed TPU bumper at both ends.
Airtac ACEJ125 Adjustable Compact Cylinder ACEJ125X225-30S Technical Specifications
| Model | Airtac ACEJ125 Adjustable Compact Cylinder ACEJ125X225-30S |
|---|---|
| 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 ACEJ125X225-30S
| ACEJ | ISO 21287 compact cylinder (adjustable-stroke). |
|---|---|
| 125 | Bore size in mm. |
| ×225 | Stroke length in mm. |
| -30 | 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 ACEJ125X225-30S Is Used
Heavy press-fit station
A 6135.9 N push at 0.5 MPa seats bearings or bushings into aluminium housings on an automotive assembly line, with the 30 mm window letting the stroke be trimmed to the part height without shims.
Pallet clamp actuator
Clamps palletized loads on a warehouse transfer cart; the 225 mm stroke clears tall loads and the -S magnet feeds CMSE switch signals to the PLC for clamp-confirmed interlocks.
Foundry ladle positioning
Positions a small pouring ladle where about 313 kg can be lifted vertically with a 2:1 margin, and the compact body fits the tight furnace-side gantry that rules out a longer profile cylinder.
Is the Airtac ACEJ125 Adjustable Compact Cylinder ACEJ125X225-30S the Right Cylinder?
At this force class the 125 mm bore delivers 6135.9 N push at 0.5 MPa; step down to a 100 mm bore (3927.0 N) if the load is lighter, or note that 125 mm is the largest bore in the ACEJ range. The 225 mm stroke sits inside the 300 mm maximum standard stroke for this bore, so no made-to-order length is needed. Choose the female M16x2.0 rod thread as ordered here, or the B code for a male thread, and add FA or LB mounting to suit the fixture. The -S magnet on this model enables CMSE / DMSE switch positioning; remember the stop screw only trims the extend stroke and does not hold a load if air is lost.
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 ACEJ125X225-30S FAQ
At 0.5 MPa it pushes 6135.9 N and pulls 5890.5 N; at 0.7 MPa push rises to 8590.3 N and pull to 8246.7 N. Theoretical maximum force is 1251.4 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, speed 30-500 mm/s, and the extend stroke can be trimmed anywhere within the 30 mm window (195-225 mm).
An external stop screw shortens the extend stroke on site by up to 30 mm, so the 225 mm stroke can be set anywhere from 195 to 225 mm; it is a mechanical end stop, not a mid-stroke lock, so the piston still drifts on air loss. A fixed TPU bumper at each end absorbs end-of-stroke energy. Because this model carries the optional -S magnet, CMSE / DMSE reed or solid-state switches mount in the body slots for position sensing.
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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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