Airtac MFCJ Adjustable Mini Cylinder MFCJ25X225-40
The AirTAC Airtac MFCJ Adjustable Mini Cylinder MFCJ25X225-40 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 MFCJ25X225-40
Dial in exact end positions on-site with the AirTAC MFCJ25X225-40, a JIS-standard round-body mini cylinder featuring a 40 mm adjustable extend window (usable extend 185-225 mm) and needle-set variable air cushions at both ends. The riveted SUS304 stainless barrel and aluminium covers yield a body notably shorter than an ISO 6432 unit of the same bore and stroke, saving valuable mounting length while resisting mild washdown corrosion.
Driven by a 1/8" port and Ø10 mm rod, this double-acting actuator delivers 245.3 N push and 206.1 N pull at 0.5 MPa. That translates to a safe working load of roughly 147 N, letting you lift about 12.5 kg vertically with a 2:1 safety margin. Note this SKU lacks the -S magnet, so it cannot host CMSG/DMSG/EMSG sensors.
Airtac MFCJ Adjustable Mini Cylinder MFCJ25X225-40 Technical Specifications
| Model | Airtac MFCJ Adjustable Mini Cylinder MFCJ25X225-40 |
|---|---|
| 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 MFCJ25X225-40
| 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 MFCJ25X225-40 Is Used
Adjustable Tooling Stops
Fine-tune the 185-225 mm extend reach on machining fixtures to accommodate part height variations without swapping cylinders.
High-Speed Diverters
Use the variable air cushion to silently absorb end-of-stroke shock when rapidly pushing 12 kg cartons at line speed.
Compact Pallet Stops
Leverage the shorter-than-ISO-6432 body length to fit stopping mechanisms into tight conveyor end-of-line frames.
Is the Airtac MFCJ Adjustable Mini Cylinder MFCJ25X225-40 the Right Cylinder?
When sizing this series, weigh the MFCJ25 against adjacent bores: the MFCJ20 provides 157 N of push force at 0.5 MPa, while the MFCJ32 jumps to 402.2 N. The MFCJ25 hits a practical middle ground at 245.3 N. Choose the adjustable-stroke and variable-cushion combination for high-speed changeovers or shock-sensitive trial fits where both the end point and deceleration need field tuning.
Mounting options include LB foot, FA flange, and TC trunnion (no SDB or back-cover mount). Because this is a non-magnetized SKU, position sensing is unavailable unless you move to an -S variant. Remember that the air cushion only decelerates the piston near stroke end—it is not a lock; for fail-safe load holding, install 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 MFCJ25X225-40 FAQ
This 25 mm bore cylinder uses a 1/8" port and generates 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, with an operating speed range of 30-800 mm/s.
No, this specific SKU does not include the -S magnet option, so CMSG, DMSG, or EMSG switches cannot be mounted. The 40 mm external adjuster shortens the extend stroke mechanically, and the needle air cushions handle deceleration, but neither feature acts as a mid-stroke lock or position hold.
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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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