Airtac MFJ Adjustable Mini Cylinder MFJ25X225-50
The AirTAC Airtac MFJ Adjustable Mini Cylinder MFJ25X225-50 is a genuine double acting, adjustable stroke JIS-standard round-body mini air cylinder with a Ø25mm bore and 225mm stroke, 1/8" air ports and a SUS304 stainless-steel barrel for mildly corrosive environments. For the same bore and stroke it is shorter than an ISO 6432 cylinder, saving mounting space.
- BoreØ25 mm
- Stroke225 mm
- Port size1/8"
- Acting typeDouble acting, adjustable stroke
- Rod threadM10×1.25
- CushionFixed TPU bumper pads
- 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 MFJ Adjustable Mini Cylinder MFJ25X225-50
Trimming the extend stroke by up to 50 mm on-site, the AirTAC MFJ25X225-50 sets its usable extend between 175 and 225 mm without requiring external stops. This JIS-standard round-body mini cylinder features a SUS304 stainless barrel and riveted aluminium covers, yielding a shorter overall mounting length than a comparable ISO 6432 unit while resisting mild washdown.
Driven by a 25 mm bore and a 1/8" port, it delivers 245.3 N of push force at 0.5 MPa. Factoring a 60% safety margin yields a safe working load near 147 N, or roughly 12.5 kg of vertical lift. Note this specific SKU lacks the -S magnet, so it cannot host CMSG/DMSG/EMSG switches.
Airtac MFJ Adjustable Mini Cylinder MFJ25X225-50 Technical Specifications
| Model | Airtac MFJ Adjustable Mini Cylinder MFJ25X225-50 |
|---|---|
| Series | MFJ JIS mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 225 mm |
| Acting type | Double acting, adjustable stroke |
| Port size | 1/8" |
| Rod thread | M10×1.25 |
| 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 – 800 mm/s |
| Cushion | Fixed TPU bumper pads |
| Max standard stroke | Up to 500 mm |
Specifications follow the official AirTAC MF/MFC (JIS-standard) datasheet. Barrel: SUS304 stainless steel; covers: aluminum alloy (round-body, riveted rolling-packed construction). Thread options: PT (blank) / G / NPT.
Theoretical Output Force (Ø25mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 245 N | 206 N |
| 0.7 MPa | 344 N | 289 N |
| Max (@1.0 MPa) | 50 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac MFJ Adjustable Mini Cylinder MFJ25X225-50
| MFJ | JIS-standard round-body mini cylinder (adjustable-stroke). |
|---|---|
| 25 | Bore size in mm. |
| ×225 | Stroke length in mm. |
| -S | Optional built-in magnet for CMSG / DMSG / EMSG sensors. |
MF-family variants: MF / MFC (double acting ±cushion), MSF / MTF (single acting push / pull), MFD / MFCD (double rod ±cushion), MFJ / MFCJ (adjustable stroke ±cushion). Back covers CA / U / CM. Mounting LB / FA / SDB / TC.
Where the Airtac MFJ Adjustable Mini Cylinder MFJ25X225-50 Is Used
Changeover Calibration Rig
Dial in the 175-225 mm extend position during product changeovers, using the 50 mm adjuster to set stops for a 12.5 kg vertical lift without swapping hardware.
Prototype Fit Station
Perfect for trial assemblies where the exact reach is unresolved, letting technicians shorten the extend end on the fly within the 147 N safe working load.
Variable Position Stop
Acts as an adjustable mechanical stop in light-duty 25 mm bore setups, trimming the extend stroke by up to 50 mm to accommodate varying part widths.
Is the Airtac MFJ Adjustable Mini Cylinder MFJ25X225-50 the Right Cylinder?
When sizing these adjustable cylinders, compare the bores directly: the MFJ20 provides 157 N of push force at 0.5 MPa, this MFJ25 hits 245.3 N, and the MFJ32 jumps to 402.2 N. The 50 mm adjuster window is ideal for trial fits and line changeovers where the exact end position is unknown. Mount via LB foot, FA flange, or TC trunnion (no SDB). Because the fixed TPU bumper only decelerates the stroke end, fit an external rod lock or pilot check valve if you must hold a load on air loss.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT / G / NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Back cover (CA/U/CM) & mount (LB/FA/SDB/TC)
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Avoid side load on the piston rod.
- check Do not dismantle the riveted front/back covers.
- check Use correct back cover (CA/U/CM) & mount (LB/FA/SDB/TC).
- check Installation by qualified personnel per AirTAC docs.
Airtac MFJ Adjustable Mini Cylinder MFJ25X225-50 FAQ
This 25 mm bore cylinder uses a 1/8" port. It generates 245.3 N push and 206.1 N pull at 0.5 MPa, 343.4 N push and 288.5 N pull at 0.7 MPa, with a theoretical max of 50 kgf at 1.0 MPa.
The external adjuster shortens the extend stroke by up to 50 mm (usable 175-225 mm); it does not add stroke. Fixed TPU bumpers decelerate the end but do not lock. This SKU has no -S magnet, so it cannot take sensors.
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.
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