Airtac ACEJ125 Adjustable Compact Cylinder ACEJ125X110-50S
The AirTAC Airtac ACEJ125 Adjustable Compact Cylinder ACEJ125X110-50S is a genuine double acting, adjustable stroke ISO 21287 compact air cylinder with a Ø125mm bore and 110mm 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
- Stroke110 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 ACEJ125X110-50S
The ACEJ125X110-50S is a double acting ISO 21287 compact cylinder with an adjustable extend stroke. Its 125 mm bore delivers 6135.9 N push and 5890.5 N pull at 0.5 MPa, rising to 8590.3 N at 0.7 MPa, with a theoretical peak of 1251.4 kgf at 1.0 MPa. An external stop screw trims the 110 mm stroke by up to 50 mm on site, giving a usable extend range of 60-110 mm without changing the cylinder.
The short ISO 21287 body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so this heavy-thrust size still fits deep presses, clamp fixtures and gantry frames where a full-length profile cylinder will not. A rule of thumb for real work: plan on roughly 3680 N of usable push at 0.5 MPa, which is about 375 kg of vertical lift with a 2:1 margin. The -S magnet is fitted, so CMSE / DMSE reed or solid-state switches can be mounted anywhere along the body slots.
Airtac ACEJ125 Adjustable Compact Cylinder ACEJ125X110-50S Technical Specifications
| Model | Airtac ACEJ125 Adjustable Compact Cylinder ACEJ125X110-50S |
|---|---|
| Series | ACEJ compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø125 mm |
| Stroke | 110 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 ACEJ125X110-50S
| ACEJ | ISO 21287 compact cylinder (adjustable-stroke). |
|---|---|
| 125 | Bore size in mm. |
| ×110 | Stroke length in mm. |
| -50 | 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 ACEJ125X110-50S Is Used
Heavy clamp fixtures
Trimming the 110 mm stroke down to 60 mm lets one cylinder serve several die or weld fixtures needing over 3600 N of clamping force at 0.5 MPa.
Press and forming stations
The 1251.4 kgf theoretical rating at 1.0 MPa suits short-stake pressing, riveting and swaging heads on compact machine frames.
Gantry lift-and-lower modules
With the -S magnet fitted, CMSE or DMSE switches flag extend and retract positions while the short body keeps the Z-axis envelope tight.
Is the Airtac ACEJ125 Adjustable Compact Cylinder ACEJ125X110-50S the Right Cylinder?
At 6135.9 N push at 0.5 MPa this is the second-largest bore in the ACEJ range; step down to the 100 mm bore (3927.0 N) for lighter clamp loads or up to nothing larger, since 125 mm is near the top of the ISO 21287 series. The stop screw shortens the extend stroke only within the 50 mm window - it is a mechanical end stop, not a mid-stroke lock, so the rod will still drift if air is lost. FA flange or LB foot mounts and I/Y rod knuckles bolt to the standard ISO 21287 face; PT ports are standard and a G thread can be ordered.
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 ACEJ125X110-50S FAQ
At 0.5 MPa it pushes 6135.9 N and pulls 5890.5 N; at 0.7 MPa it pushes 8590.3 N and pulls 8246.7 N, with a theoretical maximum of 1251.4 kgf at 1.0 MPa. The -50 code is a 50 mm adjustment window: an external stop screw shortens the 110 mm extend stroke to any value from 60 to 110 mm. It is a mechanical end stop only, not a load-holding brake. Operating range is 0.15-1.0 MPa (22-145 psi) at 30-500 mm/s.
This is an ISO 21287 compact cylinder whose hard-anodized aluminium body saves about 50% of the mounting length of an ISO 15552 profile cylinder, with a fixed TPU bumper at each end absorbing end-of-stroke energy. The -S magnet is fitted on this model, so CMSE / DMSE reed or solid-state switches mount in the body slots. FA flange, LB foot and FTC brackets plus I/Y rod knuckles attach to the standard ISO 21287 face; the rod end is female M16x2.0 and the port is 1/4" PT.
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