Airtac MFCJ Adjustable Mini Cylinder MFCJ25X250-10S
The AirTAC Airtac MFCJ Adjustable Mini Cylinder MFCJ25X250-10S is a genuine double acting, adjustable stroke + cushion JIS-standard round-body mini air cylinder with a Ø25mm bore and 250mm 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
- Stroke250 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 MFCJ25X250-10S
Dial in exact end positions and absorb high-speed shock with the AirTAC MFCJ25X250-10S. This JIS-standard round-body mini cylinder features a 10mm adjustable extend window, letting you fine-tune the 250mm stroke on-site for precise changeovers. A needle variable air cushion at both ends soaks up end-of-stroke impact, ensuring smooth deceleration without relying on harsh bumpers.
Built with a SUS304 stainless barrel and riveted aluminium covers, it resists mild corrosion and washdowns while maintaining a shorter mounting length than an ISO 6432 unit. The Ø25mm bore uses a 1/8" port and M10x1.25 male rod thread, delivering 245.3N push force at 0.5MPa. With the built-in -S magnet, you can mount CMSG/DMSG/EMSG switches for position sensing. It yields a safe working load of roughly 147N, lifting about 12.5kg vertically with a 2:1 margin.
Airtac MFCJ Adjustable Mini Cylinder MFCJ25X250-10S Technical Specifications
| Model | Airtac MFCJ Adjustable Mini Cylinder MFCJ25X250-10S |
|---|---|
| Series | MFCJ JIS mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 250 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 MFCJ25X250-10S
| MFCJ | JIS-standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 25 | Bore size in mm. |
| ×250 | 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 MFCJ25X250-10S Is Used
High-Speed Component Pressing
Tune the 10mm extend window to dial in exact contact depth on delicate assemblies, relying on the variable air cushion to absorb the 245.3N impact at high speed.
Adjustable Transfer Diverter
Fine-tune the actuation reach on the fly during product changeovers, using the needle cushion to softly stop the 250mm stroke without jarring the conveyor line.
Variable Stroke Carton Stopper
Shift the extend end position to accommodate different carton sizes while the SUS304 stainless body handles intermittent washdowns in packaging environments.
Is the Airtac MFCJ Adjustable Mini Cylinder MFCJ25X250-10S the Right Cylinder?
When sizing this adjustable family, compare the real thrust: the MFCJ20 provides 157N at 0.5MPa, this MFCJ25 hits 245.3N, and the MFCJ32 delivers 402.2N. Choose the 25mm bore when your changeover needs moderate push force plus on-site stroke tuning. The 10mm adjuster only shortens the extend end (usable range 240-250mm); retract remains full. The variable air cushion decelerates the piston near stroke end but does not lock the load. If gravity or air loss causes drift, add an external rod lock or pilot check valve. Mount via LB foot, FA flange, or TC trunnion (no SDB), and use the -S magnet for CMSG/DMSG/EMSG sensors.
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 MFCJ25X250-10S FAQ
This double-acting cylinder uses a 1/8" port and M10x1.25 male rod thread. It generates 245.3N push and 206.1N pull at 0.5MPa, 343.4N push and 288.5N pull at 0.7MPa, with a theoretical max of 50kgf at 1.0MPa. Operating pressure is 0.15-1.0MPa and speed is 30-800mm/s.
The external adjuster shortens the extend stroke by up to 10mm (usable range 240-250mm); retract remains full. The variable air cushion at both ends uses a needle valve to decelerate the piston smoothly at high speed. This cushion only absorbs shock and is not a brake. The -S magnet allows CMSG/DMSG/EMSG switch mounting.
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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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