Airtac MFJ Adjustable Mini Cylinder MFJ25X200-40
The AirTAC Airtac MFJ Adjustable Mini Cylinder MFJ25X200-40 is a genuine double acting, adjustable stroke JIS-standard round-body mini air cylinder with a Ø25mm bore and 200mm 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
- Stroke200 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 MFJ25X200-40
Fine-tune your extend end position on-site with the AirTAC MFJ25X200-40, a JIS-standard round-body mini cylinder built with a SUS304 stainless barrel and riveted aluminium covers. An external adjuster lets you shorten the extend stroke by up to 40 mm, giving a usable range of 160-200 mm without buying a new cylinder or adding external stops. The retract stroke remains full length.
This double-acting 25 mm bore unit delivers 245.3 N push and 206.1 N pull at 0.5 MPa, making it suitable for moderate load moves. It features fixed TPU bumper pads for end-deceleration, a 1/8" port, and a 10 mm rod with an M10x1.25 male thread. This SKU lacks the -S magnet, so it cannot accept CMSG/DMSG/EMSG sensors. For a similar bore and stroke, the riveted body is shorter than an ISO 6432 cylinder, saving valuable mounting length.
Airtac MFJ Adjustable Mini Cylinder MFJ25X200-40 Technical Specifications
| Model | Airtac MFJ Adjustable Mini Cylinder MFJ25X200-40 |
|---|---|
| Series | MFJ JIS mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 200 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 MFJ25X200-40
| MFJ | JIS-standard round-body mini cylinder (adjustable-stroke). |
|---|---|
| 25 | Bore size in mm. |
| ×200 | 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 MFJ25X200-40 Is Used
Changeover Stations
Dial in the extend position during format changes by adjusting up to 40 mm on the 200 mm base stroke, perfect for moderate 245 N push force tasks.
Trial Fit Rigs
Use the 160-200 mm usable window to test end positions before finalising a design, avoiding the need to swap cylinders for every iteration.
Variable Position Stops
Replace external mechanical stops with the built-in adjuster for moderate load positioning, leveraging the compact JIS body to save space.
Is the Airtac MFJ Adjustable Mini Cylinder MFJ25X200-40 the Right Cylinder?
Choose the MFJ25X200-40 when you need moderate force and on-site adjustability. It delivers 245.3 N push at 0.5 MPa, sitting between the MFJ20 at 157 N and the MFJ32 at 402.2 N. The 40 mm adjuster window is ideal for trial fits and line changeovers where the exact extend position is not final. The fixed TPU bumpers decelerate the stroke end but do not lock the load; the piston will drift on air loss, so add an external rod lock or pilot check valve for holding. Mount via LB foot, FA flange, or TC trunnion (no SDB). Because this non-S SKU has no magnet, switch to an -S variant if you need position sensing.
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 MFJ25X200-40 FAQ
This 25 mm bore cylinder has a 1/8" port and a 10 mm rod with an M10x1.25 thread. At 0.5 MPa it pushes 245.3 N and pulls 206.1 N. At 0.7 MPa it pushes 343.4 N and pulls 288.5 N. The theoretical max force is 50 kgf at 1.0 MPa.
The external adjuster shortens the extend stroke by up to 40 mm (usable extend 160-200 mm); it does not add stroke. Fixed TPU bumper pads decelerate the stroke end but do not act as a lock. The piston drifts on air loss, so use an external rod lock for holding. This non-S SKU cannot take sensors.
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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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