Airtac MFJ Adjustable Mini Cylinder MFJ25X100-100S
The AirTAC Airtac MFJ Adjustable Mini Cylinder MFJ25X100-100S 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 MFJ25X100-100S
Dial in your extend position on-site with the AirTAC MFJ25X100-100S, a JIS-standard round-body mini cylinder. An external adjuster lets you shorten the extend stroke by up to 100 mm, removing the need to swap hardware or bolt on external stops during trial fits. The riveted aluminium covers and SUS304 stainless barrel resist mild washdown while keeping the overall body shorter than a comparable ISO 6432 unit.
This double-acting 25 mm bore delivers 245.3 N of push force at 0.5 MPa, making it a solid fit for moderate positioning tasks. It carries the -S option, meaning the built-in piston magnet is ready for CMSG, DMSG, or EMSG switches. The unit relies on fixed TPU bumper pads for end-of-stroke deceleration and uses a 1/8" port.
Airtac MFJ Adjustable Mini Cylinder MFJ25X100-100S Technical Specifications
| Model | Airtac MFJ Adjustable Mini Cylinder MFJ25X100-100S |
|---|---|
| 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 MFJ25X100-100S
| 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 MFJ25X100-100S Is Used
Changeover Rigs
Fine-tune the extend end by up to 100 mm during product line changeovers, letting one cylinder serve multiple fixture lengths without hardware swaps.
Prototyping Fixtures
Ideal for trial assemblies where the exact push position is unknown, using the 245.3 N @0.5 MPa force to test component seating before finalising stops.
Vertical Lift Stops
Lifts about 12.5 kg with a 2:1 safety margin, with the external adjuster preventing over-travel if the load length varies slightly between cycles.
Is the Airtac MFJ Adjustable Mini Cylinder MFJ25X100-100S the Right Cylinder?
When sizing this series, compare the real thrust outputs: the 25 mm bore provides 245.3 N of push force at 0.5 MPa, sitting neatly between the 157 N of an MFJ20 and the 402.2 N of an MFJ32. This makes it ideal for changeover stations where you need a safe working load of roughly 147 N or want to lift about 12.5 kg vertically with a 2:1 margin. The 100 mm adjustable window is perfect for prototyping rigs where the exact end position is not yet finalised.
Mount this cylinder using LB foot, FA flange, or TC trunnion brackets, as there is no SDB or back-cover option on this adjustable build. Remember that the bumper pads only decelerate the stroke end; they do not act as a brake. If your application must hold a load vertically during air loss, add 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 MFJ25X100-100S FAQ
This 25 mm bore cylinder features a 1/8" port and a Ø10 mm rod with an M10x1.25 male thread. 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 ranges from 30-800 mm/s.
The external adjuster shortens the extend stroke by up to 100 mm on-site without changing the base cylinder, and it only sets the end position rather than locking mid-stroke. The -S suffix means a piston magnet is included, allowing you to mount CMSG, DMSG, or EMSG sensors for position detection.
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1-Year Warranty
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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Most inquiries answered within 7-8 hours.
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