Airtac ACEJ125 Adjustable Compact Cylinder ACEJ125X75-50
The AirTAC Airtac ACEJ125 Adjustable Compact Cylinder ACEJ125X75-50 is a genuine double acting, adjustable stroke ISO 21287 compact air cylinder with a Ø125mm bore and 75mm 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
- Stroke75 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 ACEJ125X75-50
A double acting AirTAC ACEJ with a 125 mm bore and 75 mm stroke, this ISO 21287 compact cylinder delivers 6135.9 N push and 5890.5 N pull at 0.5 MPa, rising to 8590.3 N at 0.7 MPa. The -50 code gives a 50 mm adjustment window: an external stop screw trims the extend stroke on site anywhere from 25 to 75 mm, so one cylinder covers several die or fixture positions. Running on 0.15-1.0 MPa (22-145 psi) filtered air at 30-500 mm/s, it reaches a theoretical 1251.4 kgf at 1.0 MPa.
The hard-anodized aluminium body pairs with a 25 mm S45C hard-chrome rod and a female M16x2.0 rod thread, with a fixed TPU bumper at both ends. Because the short body saves about 50% of the mounting length of an ISO 15552 profile cylinder, it slots into heavy presses and gantries where space is tight. Plan for roughly 610 N x 0.6 of usable push at 0.5 MPa, which is about 375 kg of vertical lift with a 2:1 margin - enough for lifting steel plates or large castings. FA flange and LB foot mounts bolt to the ISO 21287 face; the magnet is the optional -S code, so order ACEJ125X75-50S if CMSE / DMSE switches are needed.
Airtac ACEJ125 Adjustable Compact Cylinder ACEJ125X75-50 Technical Specifications
| Model | Airtac ACEJ125 Adjustable Compact Cylinder ACEJ125X75-50 |
|---|---|
| Series | ACEJ compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø125 mm |
| Stroke | 75 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 ACEJ125X75-50
| ACEJ | ISO 21287 compact cylinder (adjustable-stroke). |
|---|---|
| 125 | Bore size in mm. |
| ×75 | 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 ACEJ125X75-50 Is Used
Press die positioning
The 50 mm window lets one 6135.9 N cylinder serve multiple die heights on a stamping fixture, trimmed on site without swapping hardware.
Pallet clamp actuation
About 625 kg of vertical lift capability at 0.5 MPa (halved for margin) clamps heavy pallets in warehousing and packaging lines.
Foundry gate control
The 25 mm S45C hard-chrome rod and short ISO 21287 body drive furnace or mold gates inside cramped foundry frames.
Is the Airtac ACEJ125 Adjustable Compact Cylinder ACEJ125X75-50 the Right Cylinder?
At 0.5 MPa this bore pushes 6135.9 N; a 100 mm bore offers 3927.0 N and a 63 mm bore 1558.6 N, so step down if your load is under about 390 kgf. The stop screw only shortens the extend stroke - it is a mechanical end stop, not a mid-stroke lock, so the rod still drifts if air is lost. Choose the female M16x2.0 rod thread (this code) or add B for male thread, pick FA or LB mounting, and add the optional -S magnet if position sensing via CMSE / DMSE switches matters.
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 ACEJ125X75-50 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 and 8246.7 N, with a theoretical maximum of 1251.4 kgf at 1.0 MPa. It is double acting, runs on air filtered to 40 um at 0.15-1.0 MPa (22-145 psi), proof tested to 1.5 MPa (215 psi), operates from -20 to +70 C at 30-500 mm/s, and the -50 stop screw trims the 75 mm extend stroke down to 25 mm.
An external stop screw shortens the extend stroke by up to 50 mm within the ordered window, giving a usable 25-75 mm range; it is an end stop only and never holds a load on air loss. The fixed TPU bumper decelerates at both ends. Sensors need the optional -S magnet code - this model has no magnet, so order ACEJ125X75-50S to enable CMSE / DMSE switches. FA flange and LB foot mounts fit the ISO 21287 face, and the short body saves about 50% of the mounting length of an ISO 15552 profile cylinder.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
Request a Quote for Airtac ACEJ125 Adjustable Compact Cylinder ACEJ125X75-50
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.