Airtac MFCJ Adjustable Mini Cylinder MFCJ25X80-40
The AirTAC Airtac MFCJ Adjustable Mini Cylinder MFCJ25X80-40 is a genuine double acting, adjustable stroke + cushion JIS-standard round-body mini air cylinder with a Ø25mm bore and 80mm 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
- Stroke80 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 MFCJ25X80-40
Tune both travel and end-of-stroke shock precisely with this AirTAC adjustable-stroke, variable-cushion mini cylinder. The external adjuster shortens the extend stroke by up to 40 mm on site, while the needle air cushion at both ends soaks up high-speed impact. It features a JIS-standard round-body build with a SUS304 stainless barrel and riveted aluminium covers, delivering a shorter mounting length than an ISO 6432 cylinder for the same 25 mm bore and 80 mm stroke. The 1/8" air port and M10x1.25 male rod thread simplify integration.
Delivering 245.3 N push force at 0.5 MPa, this double-acting actuator provides a safe working load of roughly 147 N. It lifts about 12.5 kg vertically with a 2:1 margin. Note this specific SKU lacks the -S magnet, so it cannot accept CMSG, DMSG, or EMSG sensors. The cushion only decelerates the piston near the ends and does not act as a brake; for position holding on air loss, install an external rod lock or pilot check valve.
Airtac MFCJ Adjustable Mini Cylinder MFCJ25X80-40 Technical Specifications
| Model | Airtac MFCJ Adjustable Mini Cylinder MFCJ25X80-40 |
|---|---|
| Series | MFCJ JIS mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 80 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 MFCJ25X80-40
| MFCJ | JIS-standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 25 | Bore size in mm. |
| ×80 | 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 MFCJ25X80-40 Is Used
High-Speed Component Pressing
Dial in the exact 40-80 mm extend distance for pressing small bearings, letting the variable air cushion absorb the 245.3 N impact smoothly during rapid cycling.
Transfer Line Diverters
Fine-tune the actuator stroke on site to handle varying package sizes on a conveyor, using the adjustable end position to prevent harsh mechanical stops at high speed.
Carton Flap Folding
Adjust the extend window to match different carton depths, relying on the needle cushion to bring the 12.5 kg vertical lift motion to a quiet, shock-free stop.
Is the Airtac MFCJ Adjustable Mini Cylinder MFCJ25X80-40 the Right Cylinder?
Choose between the MFCJ20 (157 N push @0.5 MPa) for lighter duties, this MFCJ25 (245.3 N push @0.5 MPa) for mid-range tasks, or the MFCJ32 (402.2 N push @0.5 MPa) when you need heavier thrust. This 25 mm bore is ideal for high-speed changeovers where the exact extend endpoint and shock absorption both need on-site tuning. Mount using LB foot, FA flange, or TC trunnion brackets (no SDB or back-cover mount exists on this adjustable build).
If you require position feedback, select the -S magnet variant to enable CMSG, DMSG, or EMSG switches. Remember that the air cushion only decelerates the load near the stroke end; it will not hold the piston if air pressure drops. For suspended loads that must resist drift, add an external rod lock or pilot-operated check valve to the system.
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 MFCJ25X80-40 FAQ
This 25 mm bore cylinder has a 1/8" air 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 maximum force is 50 kgf at 1.0 MPa.
No, this specific SKU does not include the -S magnet, so it cannot accept CMSG, DMSG, or EMSG switches. You must choose the -S variant if you require position sensing.
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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.
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Most inquiries answered within 7-8 hours.
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