Airtac MFCJ Adjustable Mini Cylinder MFCJ25X125-100
The AirTAC Airtac MFCJ Adjustable Mini Cylinder MFCJ25X125-100 is a genuine double acting, adjustable stroke + cushion JIS-standard round-body mini air cylinder with a Ø25mm bore and 125mm 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
- Stroke125 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 MFCJ25X125-100
Dial in the extend travel right at the machine with the AirTAC MFCJ25X125-100, a JIS-standard round-body mini cylinder that cuts up to 100 mm off its 125 mm stroke on-site. The riveted SUS304 stainless barrel and aluminium covers form a compact body that is physically shorter than a comparable ISO 6432 unit, saving valuable mounting length while resisting mild washdown corrosion. A needle variable air cushion at both ends absorbs high-speed end-of-stroke shock for quiet operation.
Driven by a 12 mm rod with a 1/8" port, this double-acting bore 25 unit delivers 245.3 N of push force at 0.5 MPa. That translates to a safe working load of roughly 147 N, lifting about 12.5 kg vertically with a 2:1 margin. This specific SKU lacks the -S magnet, so it cannot accept CMSG, DMSG or EMSG position switches.
Airtac MFCJ Adjustable Mini Cylinder MFCJ25X125-100 Technical Specifications
| Model | Airtac MFCJ Adjustable Mini Cylinder MFCJ25X125-100 |
|---|---|
| Series | MFCJ JIS mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 125 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 MFCJ25X125-100
| MFCJ | JIS-standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 25 | Bore size in mm. |
| ×125 | 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 MFCJ25X125-100 Is Used
High-Speed Forming Press
Tune the 25 to 125 mm extend window on the fly to trial-fit parts, relying on the variable air cushion to soak up shock from rapid 245.3 N push strokes.
Package Divert Arm
Shorten the extend end by up to 100 mm during product changeovers, using the needle cushion to quietly stop the 12.5 kg diverter mechanism at high speed.
Lab Test Fixture
Dial in exact 147 N safe working load contact positions without swapping cylinders, letting the adjustable stroke handle multiple sample heights.
Is the Airtac MFCJ Adjustable Mini Cylinder MFCJ25X125-100 the Right Cylinder?
When sizing this series, compare the real thrust figures: the bore 25 yields 245.3 N push at 0.5 MPa, sitting neatly between the 157 N of an MFCJ20 and the 402.2 N of an MFCJ32. Choose the 25 mm bore when your changeover requires precise extend tuning within the 25 to 125 mm usable window alongside high-speed cushioning. Mounting options include LB foot, FA flange and TC trunnion, but note there is no SDB or back-cover mount on this adjustable build.
Remember that the external adjuster and the variable air cushion only manage the end position and deceleration; they do not lock the piston. If your load must hold position during an air loss event, fit an external rod lock or pilot-operated check valve. Because this code has no -S magnet, you must select a magnetised variant if you need electronic sensing.
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 MFCJ25X125-100 FAQ
This double-acting bore 25 cylinder uses a 1/8" port and delivers 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.
This specific SKU lacks the -S magnet, so it cannot accept CMSG, DMSG or EMSG switches. The external adjuster shortens the extend stroke by up to 100 mm (usable range 25-125 mm), while the needle variable air cushion decelerates the piston near the ends without acting as a lock.
Authorized Export Seller
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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