Airtac MFJ Adjustable Mini Cylinder MFJ25X250-50
The AirTAC Airtac MFJ Adjustable Mini Cylinder MFJ25X250-50 is a genuine double acting, adjustable stroke JIS-standard round-body mini air cylinder with a Ø25mm bore and 250mm 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
- Stroke250 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 MFJ25X250-50
Trim the extend stroke by up to 50 mm directly at the fixture with the AirTAC MFJ25X250-50, a JIS-standard round-body mini cylinder built for double-acting service. Its external adjuster lets you dial in the end position from 200 to 250 mm without swapping hardware. The SUS304 stainless barrel and riveted aluminium covers form a compact body that is shorter than an ISO 6432 unit for the same envelope, resisting mild washdown.
In the 25 mm bore class, this unit generates 245.3 N of push force and 206.1 N of pull force at 0.5 MPa. That translates to a safe working load of roughly 147 N, or lifting about 12.5 kg vertically with a 2:1 margin. Air connects via a 1/8" port, and fixed TPU bumpers decelerate the stroke ends. Note this SKU lacks a magnet, so it cannot host CMSG/DMSG/EMSG switches.
Airtac MFJ Adjustable Mini Cylinder MFJ25X250-50 Technical Specifications
| Model | Airtac MFJ Adjustable Mini Cylinder MFJ25X250-50 |
|---|---|
| Series | MFJ JIS mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 250 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 MFJ25X250-50
| MFJ | JIS-standard round-body mini cylinder (adjustable-stroke). |
|---|---|
| 25 | Bore size in mm. |
| ×250 | 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 MFJ25X250-50 Is Used
Changeover Stations
Fine-tune the 200 to 250 mm extend position on the fly during product format changes, using the 50 mm adjuster to set precise stops without machining new brackets.
Prototype Fit-Up Rigs
Safely test end-of-stroke contact points for 12.5 kg vertical lifts, relying on the 245.3 N push force to verify reach before finalising the machine design.
Variable Position Stops
Dial in the exact extend length for multi-part clamping on a single fixture, letting the external adjuster absorb dimensional variance up to 50 mm.
Is the Airtac MFJ Adjustable Mini Cylinder MFJ25X250-50 the Right Cylinder?
Choose between the available bores using real 0.5 MPa push figures: the MFJ20 yields 157 N, this MFJ25 provides 245.3 N, and the MFJ32 jumps to 402.2 N. The 50 mm adjustable window here is ideal for trial fits and line changeovers where the exact extend endpoint is not yet finalised. Mounting options include LB foot, FA flange, and TC trunnion (no SDB). Because a plain cylinder drifts on air loss, add an external rod lock or pilot check valve if the load must be held.
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 MFJ25X250-50 FAQ
This 25 mm bore cylinder has a 1/8" port and a 10 mm rod with an M10x1.25 male thread. At 0.5 MPa it pushes with 245.3 N and pulls with 206.1 N. At 0.7 MPa the push is 343.4 N and pull is 288.5 N. The theoretical maximum force is 50 kgf at 1.0 MPa, and speed ranges from 30 to 800 mm/s.
The external adjuster shortens the extend stroke by up to 50 mm on site, giving a usable extend range of 200 to 250 mm; the retract stroke remains full. Fixed TPU bumper pads decelerate the piston near the stroke ends but do not act as a lock. This SKU has no magnet (-S), so it cannot accept CMSG, DMSG, or EMSG 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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