Airtac MFCJ Adjustable Mini Cylinder MFCJ25X225-20
The AirTAC Airtac MFCJ Adjustable Mini Cylinder MFCJ25X225-20 is a genuine double acting, adjustable stroke + cushion JIS-standard round-body mini air cylinder with a Ø25mm bore and 225mm 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
- Stroke225 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 MFCJ25X225-20
Dial in exact end positions and absorb high-speed shock with the AirTAC MFCJ25X225-20 adjustable-stroke mini cylinder. This double-acting JIS-standard round-body actuator features a 20mm external adjuster window, allowing you to shorten the extend stroke on-site from its 225mm maximum down to 205mm, while the retract stroke remains full length. Built with a SUS304 stainless steel barrel and riveted aluminium covers, it resists mild corrosion and washdown environments. For the same bore and stroke, this compact body is notably shorter than an ISO 6432 cylinder, saving valuable mounting length without claiming ISO compliance.
Equipped with a needle-set variable air cushion at both ends, it soaks up end-of-stroke kinetic energy for smooth, quiet operation across its 30-800 mm/s speed range. The 25mm bore delivers 245.3N of push force at 0.5 MPa, yielding a safe working load of about 147N or roughly 12.5kg of vertical lift with a 2:1 margin. It uses a 1/8" port and an M10x1.25 male rod thread. Note this SKU lacks the -S magnet option, meaning it cannot accept CMSG, DMSG, or EMSG magnetic switches.
Airtac MFCJ Adjustable Mini Cylinder MFCJ25X225-20 Technical Specifications
| Model | Airtac MFCJ Adjustable Mini Cylinder MFCJ25X225-20 |
|---|---|
| Series | MFCJ JIS mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 225 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 MFCJ25X225-20
| MFCJ | JIS-standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 25 | Bore size in mm. |
| ×225 | 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 MFCJ25X225-20 Is Used
High-Speed Diverters
Tune the 205-225mm extend stroke on-site to match package sizes precisely, while the variable air cushion absorbs the impact of rapid 245.3N diverting motions.
Trial Fit Assembly
Ideal for changeovers where the exact reach must be dialed in within the 20mm window, preventing hard crashes during sensitive component seating.
Compact Vertical Lifts
Lifts about 12.5kg vertically using a 2:1 safety margin, fitting into tight machine frames thanks to a riveted stainless body shorter than ISO 6432 equivalents.
Is the Airtac MFCJ Adjustable Mini Cylinder MFCJ25X225-20 the Right Cylinder?
When sizing this actuator, compare the real thrust figures: this 25mm bore provides 245.3N push at 0.5 MPa, sitting neatly between the smaller MFCJ20 at 157N and the larger MFCJ32 at 402.2N. Choose the MFCJ25 when your application demands moderate force alongside the flexibility of a 20mm adjustable extend window and variable air cushioning for high-speed changeovers or shock-sensitive trial fits. The cushion only decelerates the piston near the stroke end—it is not a lock or brake.
For mounting, select from LB foot, FA flange, or TC trunnion options; note there is no SDB mount and no back cover on this adjustable build. Because this specific SKU has no magnet, you cannot mount position sensors. If the load must be held vertically on air loss or when the valve is centred, the piston will drift—add an external rod lock or pilot-operated check valve rather than relying on the cushion.
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 MFCJ25X225-20 FAQ
This 25mm bore cylinder uses a 1/8" port and an M10x1.25 male rod thread. It delivers 245.3N push and 206.1N pull at 0.5 MPa, 343.4N push and 288.5N pull at 0.7 MPa, with a theoretical max of 50kgf at 1.0 MPa. The 225mm base stroke is adjustable down by 20mm, and it operates at 30-800 mm/s.
This specific SKU does not have the -S magnet, so it cannot accept CMSG, DMSG, or EMSG switches. It features a variable air cushion at both ends that you needle-set to decelerate the piston smoothly at high speeds, but this cushion acts only as a shock absorber, not a braking lock.
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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.
Fast Reply
Most inquiries answered within 7-8 hours.
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