Airtac MFCJ Adjustable Mini Cylinder MFCJ25X300-10
The AirTAC Airtac MFCJ Adjustable Mini Cylinder MFCJ25X300-10 is a genuine double acting, adjustable stroke + cushion JIS-standard round-body mini air cylinder with a Ø25mm bore and 300mm 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
- Stroke300 mm
- Port size1/8"
- Acting typeDouble acting, adjustable stroke + cushion
- Rod threadM10×1.25
- CushionVariable air cushion, both ends
- 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 MFCJ Adjustable Mini Cylinder MFCJ25X300-10
Tune your extend stroke precisely on-site with the AirTAC MFCJ25X300-10, a JIS-standard round-body mini cylinder. It features a 10 mm adjustable window, allowing you to shorten the extend end from 300 mm down to 290 mm, while the retract stroke remains full. A variable air cushion at both ends soaks up high-speed end-of-stroke shock for smooth deceleration.
Built with a SUS304 stainless steel barrel and riveted aluminium covers, this double-acting actuator resists mild corrosion and washdown. It delivers 245.3 N push force at 0.5 MPa via a 1/8" port, yielding a safe working load of about 147 N or roughly 12.5 kg vertical lift with a 2:1 margin. Note this SKU lacks the -S magnet, so it cannot accept CMSG/DMSG/EMSG sensors.
Airtac MFCJ Adjustable Mini Cylinder MFCJ25X300-10 Technical Specifications
| Model | Airtac MFCJ Adjustable Mini Cylinder MFCJ25X300-10 |
|---|---|
| Series | MFCJ JIS mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 300 mm |
| Acting type | Double acting, adjustable stroke + cushion |
| 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 | Variable air cushion, both ends |
| 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 MFCJ Adjustable Mini Cylinder MFCJ25X300-10
| MFCJ | JIS-standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 25 | Bore size in mm. |
| ×300 | 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 MFCJ Adjustable Mini Cylinder MFCJ25X300-10 Is Used
High-Speed Diverting
Dial in the 290-300 mm extend position to deflect light packages on a conveyor, relying on the variable air cushion to absorb the impact of rapid 245.3 N strokes.
Trial Fit Clamping
Use the 10 mm stroke adjuster to perfect the clamping reach during machine changeovers, fine-tuning the end position without remounting the cylinder.
Carton Forming Stops
Set precise end-stops for carton folding arms where high cycle speeds demand needle-adjustable air cushions to prevent mechanical shock over long 300 mm travels.
Is the Airtac MFCJ Adjustable Mini Cylinder MFCJ25X300-10 the Right Cylinder?
When sizing this series, compare the real 0.5 MPa push forces: this 25 mm bore gives 245.3 N, sitting neatly between the smaller MFCJ20 at 157 N and the larger MFCJ32 at 402.2 N. Choose the 25 mm bore when your changeover requires moderate force plus on-site stroke tuning and high-speed shock absorption. The external adjuster sets the end position but does not lock the piston mid-stroke.
For mounting, select LB foot, FA flange, or TC trunnion brackets (no SDB or back-cover mount exists on this adjustable build). Because this specific SKU has no -S magnet, position sensing is impossible here; add the -S option for CMSG/DMSG/EMSG switches. Remember the air cushion only decelerates near stroke end—it is not a brake, so install 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 MFCJ Adjustable Mini Cylinder MFCJ25X300-10 FAQ
This 25 mm bore double-acting cylinder uses a 1/8" port and delivers 245.3 N push / 206.1 N pull at 0.5 MPa, and 343.4 N push / 288.5 N pull at 0.7 MPa. The theoretical max force is 50 kgf at 1.0 MPa. The base stroke is 300 mm, and the external adjuster shortens the extend end by up to 10 mm (usable extend 290-300 mm).
No, this specific SKU lacks the -S magnet, so it cannot accept CMSG, DMSG, or EMSG switches. The variable air cushion at both ends is needle-settable to decelerate the piston near stroke end for high-speed motion, but it acts only as a shock absorber, not a brake or position lock.
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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