Airtac MFCJ Adjustable Mini Cylinder MFCJ25X125-75
The AirTAC Airtac MFCJ Adjustable Mini Cylinder MFCJ25X125-75 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 MFCJ25X125-75
Dial in exact extend lengths on-site with the AirTAC MFCJ25X125-75, a JIS-standard round-body mini cylinder featuring a 75 mm adjustable stroke window and variable air cushions at both ends. Built with a SUS304 stainless barrel and riveted aluminium covers, it is shorter than an ISO 6432 unit for the same 25 mm bore and 125 mm stroke, saving valuable machine space while resisting mild washdown corrosion. The 1/8" port and M10x1.25 male rod thread keep pneumatic plumbing compact.
This double-acting actuator delivers 245.3 N of push force at 0.5 MPa, making it a robust mid-range choice for high-speed changeovers where end-of-stroke shock must be tuned out. With a safe working load of roughly 147 N, it can reliably lift about 12.5 kg vertically using a 2:1 safety margin. Note that this specific SKU lacks a magnet and cannot accept position sensors; adding the -S variant enables CMSG, DMSG, or EMSG switches.
Airtac MFCJ Adjustable Mini Cylinder MFCJ25X125-75 Technical Specifications
| Model | Airtac MFCJ Adjustable Mini Cylinder MFCJ25X125-75 |
|---|---|
| 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 MFCJ25X125-75
| 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 MFCJ25X125-75 Is Used
Adjustable Tooling Stops
Fine-tune the extend position by up to 75 mm during machine changeovers, using the 245.3 N thrust to push parts into exact alignment without remachining hard stops.
High-Speed Diverting
Leverage the variable air cushions to silently decelerate the 12.5 kg diverting arm at the end of its 125 mm stroke, preventing impact damage on fast packaging lines.
Lab Test Actuators
Set precise extension lengths for repetitive material testing cycles, relying on the SUS304 stainless barrel to withstand humid or mildly corrosive laboratory environments.
Is the Airtac MFCJ Adjustable Mini Cylinder MFCJ25X125-75 the Right Cylinder?
When sizing this series, compare the real thrust outputs: the MFCJ20 provides 157 N of push force at 0.5 MPa, this MFCJ25 hits 245.3 N, and the larger MFCJ32 delivers 402.2 N. Choose the 25 mm bore when your payload sits in that 12.5 kg vertical lift bracket and you need the 75 mm on-site adjustability to perfect a trial fit without machining new stops. The needle air cushions are essential for absorbing kinetic energy at speeds up to 800 mm/s, but remember they only decelerate the piston near the end caps—they do not function as a brake.
Mounting options include LB foot, FA flange, and TC trunnion styles (with no SDB or back-cover option available on this adjustable build). Because this non-magnet SKU cannot host a sensor, you must rely on external timing or mechanical stops for position confirmation. If a power or air loss occurs, the cylinder will drift; to suspend a load safely, install an external rod lock or a pilot-operated check valve rather than relying on the cushion needle.
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 MFCJ25X125-75 FAQ
This 25 mm bore cylinder features a 1/8" air 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 a magnet, so it cannot accept CMSG, DMSG, or EMSG switches. You would need the -S variant for position sensing. The 75 mm external adjuster only shortens the extend end position and does not lock the piston mid-stroke.
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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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