Airtac MFCJ Adjustable Mini Cylinder MFCJ25X300-50
The AirTAC Airtac MFCJ Adjustable Mini Cylinder MFCJ25X300-50 is a genuine double acting, adjustable stroke + cushion JIS-standard round-body mini air cylinder with a Ø25mm bore and 300mm 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
- Stroke300 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 MFCJ25X300-50
Tune extend travel on-site with the AirTAC MFCJ25X300-50, a JIS-standard round-body mini cylinder featuring a 50 mm adjustable window and variable air cushioning at both ends. This double-acting actuator uses a SUS304 stainless barrel with riveted aluminium covers, yielding a shorter mounting envelope than an ISO 6432 unit for the same 300 mm stroke. Equipped with a 1/8" port and an M10x1.25 male rod thread, it delivers 245.3 N push force at 0.5 MPa.
The integrated needle cushion soaks up high-speed end-of-stroke shock, while the external adjuster shortens the extend end by up to 50 mm (usable range 250-300 mm) without acting as a mid-stroke lock. With a safe working load around 147 N, it lifts about 12.5 kg vertically with a 2:1 margin. Note this SKU lacks the -S magnet, so it cannot accept CMSG/DMSG/EMSG sensors.
Airtac MFCJ Adjustable Mini Cylinder MFCJ25X300-50 Technical Specifications
| Model | Airtac MFCJ Adjustable Mini Cylinder MFCJ25X300-50 |
|---|---|
| Series | MFCJ JIS mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 300 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 MFCJ25X300-50
| MFCJ | JIS-standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 25 | Bore size in mm. |
| ×300 | 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 MFCJ25X300-50 Is Used
Sorter Diverter Tuning
Dial in the 250-300 mm extend reach on a high-speed parcel diverter using the 50 mm adjuster, while the variable air cushion silently absorbs the shock of rapid routing changes.
Carton Flap Folding
Provides 245.3 N of push force to fold heavy cardboard flaps, allowing on-site stroke tweaks during packaging size changeovers without swapping the entire cylinder.
Light Press Assembly
Delivers a safe working load of roughly 147 N for pressing small bearings, using the needle cushion to guarantee smooth, non-jarring deceleration at the end of the 300 mm stroke.
Is the Airtac MFCJ Adjustable Mini Cylinder MFCJ25X300-50 the Right Cylinder?
Weigh this 25 mm bore against the MFCJ20 (157 N push @0.5 MPa) if your payload is very light, or step up to the MFCJ32 (402.2 N push @0.5 MPa) for heavier tooling. The MFCJ25X300-50 hits a solid middle ground at 245.3 N, making it ideal for high-speed changeovers where you must dial in both the exact extend position and the end-of-stroke deceleration. Mount via LB foot, FA flange, or TC trunnion (no SDB or back-cover option exists on this adjustable build).
Remember that the air cushion only decelerates the piston near the end of travel; it is not a brake. If the machine loses air, the piston will drift, so fit an external rod lock or pilot check valve to hold suspended loads safely. Because this specific SKU has no magnet, you cannot mount position sensors unless you switch to the -S variant.
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 MFCJ25X300-50 FAQ
This 25 mm bore cylinder features a 1/8" port and an M10x1.25 male rod thread. It generates a push force of 245.3 N and a pull force of 206.1 N at 0.5 MPa. At 0.7 MPa, push increases to 343.4 N and pull to 288.5 N. The theoretical maximum force is 50 kgf at 1.0 MPa.
No. This SKU lacks the -S magnet, meaning it cannot accept CMSG, DMSG, or EMSG magnetic switches. Additionally, the external adjuster only shortens the extend end position by up to 50 mm; it does not lock the piston mid-stroke. The variable air cushion solely decelerates the piston near the stroke ends.
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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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