Airtac MFJ Adjustable Mini Cylinder MFJ25X100-50S
The AirTAC Airtac MFJ Adjustable Mini Cylinder MFJ25X100-50S is a genuine double acting, adjustable stroke JIS-standard round-body mini air cylinder with a Ø25mm bore and 100mm 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
- Stroke100 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 MFJ25X100-50S
Trimming the extend end by up to 50 mm on site, the AirTAC MFJ25X100-50S lets you fine-tune the 100 mm stroke without buying a new unit or adding external stops. This JIS-standard round-body mini cylinder features a SUS304 stainless barrel and riveted aluminium covers, delivering a shorter overall mounting length than an equivalent ISO 6432 build while resisting mild washdown corrosion.
Driven by filtered air through a 1/8" port at 0.15 to 1.0 MPa, the Ø10 mm piston rod provides 245.3 N of push force at 0.5 MPa. With a safe working load around 147 N, it lifts about 12.5 kg vertically using a 2:1 margin. The -S suffix equips the piston with a magnet for CMSG, DMSG, or EMSG switches, and fixed TPU bumpers decelerate the stroke ends.
Airtac MFJ Adjustable Mini Cylinder MFJ25X100-50S Technical Specifications
| Model | Airtac MFJ Adjustable Mini Cylinder MFJ25X100-50S |
|---|---|
| Series | MFJ JIS mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 100 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 MFJ25X100-50S
| MFJ | JIS-standard round-body mini cylinder (adjustable-stroke). |
|---|---|
| 25 | Bore size in mm. |
| ×100 | 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 MFJ25X100-50S Is Used
Changeover Stations
Dial in the exact extend position during format changes using the 50 mm adjuster window, avoiding the need to swap cylinders for different product lengths.
Trial Fit Rigs
Safely test end positions with a 147 N safe working load, tweaking the stroke on the fly until the optimal travel is found before finalizing the design.
Variable Position Stops
Use the 245.3 N push force to press or index parts, relying on the external adjuster rather than physical hard stops to set the precise lower position.
Is the Airtac MFJ Adjustable Mini Cylinder MFJ25X100-50S the Right Cylinder?
When sizing this adjustable series, compare the real thrust: the MFJ20 delivers 157 N at 0.5 MPa, while the MFJ32 jumps to 402.2 N. This 25 mm bore sits comfortably in the middle at 245.3 N push. The 50 mm external adjuster is invaluable for changeover stations or trial fits where the exact extend position is not final.
Mounting options include LB foot, FA flange, and TC trunnion (no SDB). Remember that fixed bumpers only decelerate the end of travel; they do not lock the rod. If you need to hold a load vertically during air loss, install an external rod lock or pilot check valve.
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 MFJ25X100-50S FAQ
This double-acting cylinder uses a 1/8" air port and a Ø10 mm rod with M10x1.25 male threads. 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 maximum of 50 kgf at 1.0 MPa. Operating speed is 30-800 mm/s.
The external adjuster shortens the extend stroke by up to 50 mm on site, giving a usable extend range of 50 to 100 mm; the retract stroke remains full length. The -S suffix denotes a built-in piston magnet for CMSG, DMSG, or EMSG sensors. Fixed TPU bumpers absorb end impacts, but they do not lock the load.
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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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