Airtac MFCJ Adjustable Mini Cylinder MFCJ25X50-30
The AirTAC Airtac MFCJ Adjustable Mini Cylinder MFCJ25X50-30 is a genuine double acting, adjustable stroke + cushion JIS-standard round-body mini air cylinder with a Ø25mm bore and 50mm 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
- Stroke50 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 MFCJ25X50-30
Tune both travel and end-of-stroke shock on the spot with this 25 mm bore, 50 mm stroke adjustable cylinder. The external adjuster lets you shorten the extend stroke by up to 30 mm, while the needle-set variable air cushion at both ends soaks up high-speed impact for smooth operation.
Built as a JIS-standard round-body mini with a SUS304 stainless barrel and riveted aluminium covers, the body is shorter than an ISO 6432 cylinder for the same stroke, saving valuable mounting length. Delivering 245.3 N push force at 0.5 MPa via a 1/8" port, it yields a safe working load of about 147 N. Note this SKU lacks a magnet (-S) and cannot take a position sensor.
Airtac MFCJ Adjustable Mini Cylinder MFCJ25X50-30 Technical Specifications
| Model | Airtac MFCJ Adjustable Mini Cylinder MFCJ25X50-30 |
|---|---|
| Series | MFCJ JIS mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 50 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 MFCJ25X50-30
| MFCJ | JIS-standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 25 | Bore size in mm. |
| ×50 | 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 MFCJ25X50-30 Is Used
High-Speed Probe Contact
Dial in the exact 20-50 mm extend reach for electrical test probes while the variable air cushion protects the 245.3 N impact at rapid cycle speeds.
Transfer Diverter Timing
Fine-tune the actuator's end position by 30 mm on the fly to match varying package sizes without swapping the cylinder or re-engineering the mount.
Light Carton Sealing
Lift boxes up to 12.5 kg safely with a 2:1 margin, relying on the adjustable needle cushion to prevent harsh slams during fast sealing strokes.
Is the Airtac MFCJ Adjustable Mini Cylinder MFCJ25X50-30 the Right Cylinder?
When sizing this series, compare the real thrust: the 25 mm bore gives 245.3 N push at 0.5 MPa, sitting neatly between the 20 mm bore at 157 N and the 32 mm bore at 402.2 N. Choose the 25 mm when you need roughly 147 N of safe working load or to lift about 12.5 kg vertically with a 2:1 margin. The 30 mm adjustable window and twin air cushions excel in high-speed changeovers where exact end positions and deceleration need fine-tuning.
Mounting options include LB foot, FA flange, and TC trunnion (no SDB). Because this specific SKU has no -S magnet, it cannot host CMSG, DMSG, or EMSG sensors. Remember that the air cushion only decelerates the piston near stroke end—it is not a lock; for holding a load on air loss, specify 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 MFCJ25X50-30 FAQ
This 25 mm bore cylinder features a 1/8" port and a Ø10 mm rod. At 0.5 MPa it provides 245.3 N push and 206.1 N pull force. At 0.7 MPa it provides 343.4 N push and 288.5 N pull. The theoretical maximum force is 50 kgf at 1.0 MPa.
This specific SKU lacks a magnet, so it cannot accept CMSG, DMSG, or EMSG switches (you need the -S variant for sensing). The 30 mm external adjuster only shortens the extend end position—it is not a mid-stroke lock. The variable air cushion decelerates the piston but does not hold the load; use an external rod lock for that.
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1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
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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