Airtac MFCJ Adjustable Mini Cylinder MFCJ25X300-100
The AirTAC Airtac MFCJ Adjustable Mini Cylinder MFCJ25X300-100 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 MFCJ25X300-100
Dial in exact end positions and absorb high-speed shock with this 25 mm bore JIS-standard round-body mini cylinder. The external adjuster trims the extend stroke by up to 100 mm on site, while the needle variable air cushion at both ends softens end-of-stroke impact. A SUS304 stainless barrel with riveted aluminium covers resists mild corrosion and washdown.
Operating at 0.5 MPa, it delivers 245.3 N of push force and 206.1 N of pull force, peaking at a 50 kgf theoretical maximum at 1.0 MPa. The 1/8" air port and M10x1.25 male rod thread simplify integration. This configuration yields a safe working load around 147 N, lifting about 12.5 kg vertically with a 2:1 margin. Note this SKU lacks a magnet and cannot take a sensor; adding the -S variant enables CMSG, DMSG or EMSG switches.
Airtac MFCJ Adjustable Mini Cylinder MFCJ25X300-100 Technical Specifications
| Model | Airtac MFCJ Adjustable Mini Cylinder MFCJ25X300-100 |
|---|---|
| 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 MFCJ25X300-100
| 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 MFCJ25X300-100 Is Used
Adjustable Press Fit
Tune the 100 mm extend window on-site to press light fittings perfectly without over-traveling, using the 245.3 N push force for precise assembly.
High-Speed Diverter
Sort packages at high cycle rates; the variable air cushion absorbs the end-of-stroke shock to prevent premature wear on the 25 mm bore mechanism.
Vertical Lift Stop
Lift loads up to 12.5 kg with a 2:1 safety margin, adjusting the extend endpoint dynamically to match varying package sizes on the line.
Is the Airtac MFCJ Adjustable Mini Cylinder MFCJ25X300-100 the Right Cylinder?
When sizing this series, compare the real thrust outputs: the 20 mm bore yields 157 N of push force at 0.5 MPa, this 25 mm bore provides 245.3 N, and the 32 mm bore jumps to 402.2 N. Choose the 25 mm bore when your payload sits in that middle band. The 100 mm adjustable window is invaluable for changeovers where the exact extend endpoint must be tuned on the machine, and the variable air cushion handles high 30-800 mm/s speeds without slamming.
Mounting options include LB foot, FA flange and TC trunnion (no SDB or back-cover). Because this is a plain cylinder without a magnet, position sensing is unavailable unless you specify the -S version. Remember that the air cushion only decelerates the piston near the stroke end—it is not a brake. If the load must hold position on air loss, 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 MFCJ25X300-100 FAQ
This double-acting cylinder uses a 1/8" air port and an M10x1.25 male rod thread. It generates 245.3 N push and 206.1 N pull at 0.5 MPa, and 343.4 N push and 288.5 N pull at 0.7 MPa. The theoretical maximum force is 50 kgf at 1.0 MPa.
This specific SKU has no magnet and cannot accept a sensor; you must select the -S variant for CMSG, DMSG or EMSG switches. The external adjuster shortens the extend stroke by up to 100 mm on-site, and the variable air cushion decelerates the piston at the ends but does not lock the load.
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1-Year Warranty
Covers non-human-caused product damage.
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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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