Airtac MFCJ Adjustable Mini Cylinder MFCJ25X300-30
The AirTAC Airtac MFCJ Adjustable Mini Cylinder MFCJ25X300-30 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 MFCJ25X300-30
Tune both the extend end-point and end-of-stroke shock precisely with this JIS-standard round-body mini cylinder. The external adjuster shortens the 300 mm extend stroke by up to 30 mm on-site, while the variable needle air cushion at both ends soaks up high-speed impact. It features a SUS304 stainless barrel and riveted aluminium covers, offering a shorter mounting length than an ISO 6432 cylinder for the same bore.
Delivering 245.3 N push force at 0.5 MPa, this double-acting actuator uses a 1/8" port and a Ø10 mm rod. It yields a safe working load of roughly 147 N, lifting about 12.5 kg vertically with a 2:1 margin. Note this SKU lacks the -S magnet, so it cannot accept CMSG, DMSG or EMSG sensors.
Airtac MFCJ Adjustable Mini Cylinder MFCJ25X300-30 Technical Specifications
| Model | Airtac MFCJ Adjustable Mini Cylinder MFCJ25X300-30 |
|---|---|
| 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 MFCJ25X300-30
| 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 MFCJ25X300-30 Is Used
Adjustable Forming Press
Dial in the exact 270-300 mm extend position for stamping light sheet metal, using the needle cushion to prevent bounce at high speed.
Transfer Diverters
Fine-tune the stroke gate during product changeovers, absorbing the end-of-travel shock to keep packages moving smoothly.
Vertical Lift Stops
Act as an adjustable physical stop for light 12.5 kg material trays, tweaking the extend length on-site without swapping cylinders.
Is the Airtac MFCJ Adjustable Mini Cylinder MFCJ25X300-30 the Right Cylinder?
When sizing this series, compare the real thrust figures: the MFCJ20 bore provides 157 N of push at 0.5 MPa, this MFCJ25 hits 245.3 N, and the larger MFCJ32 delivers 402.2 N. Choose this 25 mm bore when your changeover requires mid-range force alongside a 30 mm stroke adjustment window for trial fits. The variable air cushion is essential for shock-sensitive setups running at speeds up to 800 mm/s.
Mounting options include LB foot, FA flange and TC trunnion (no SDB). Because this exact SKU has no -S magnet, position sensing is impossible without switching to the magnet variant. Finally, the air cushion and adjuster only decelerate the piston; they do not hold the load on air loss. For vertical loads, 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 MFCJ Adjustable Mini Cylinder MFCJ25X300-30 FAQ
This 25 mm bore cylinder uses a 1/8" port and a Ø10 mm rod. It delivers 245.3 N push and 206.1 N pull at 0.5 MPa, or 343.4 N push and 288.5 N pull at 0.7 MPa. The theoretical max force is 50 kgf at 1.0 MPa. The 300 mm base stroke can be shortened by up to 30 mm via the external adjuster.
No, this specific SKU does not include a magnet, so it cannot accept CMSG, DMSG or EMSG switches. You must select the -S variant for position sensing. The variable air cushion and stroke adjuster only control motion and end position; they do not lock or hold the load.
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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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