
The AirTAC Airtac MFCJ Adjustable Mini Cylinder MFCJ25X175-10S is a genuine double acting, adjustable stroke + cushion JIS-standard round-body mini air cylinder with a Ø25mm bore and 175mm 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.
Dial in exact end positions and absorb high-speed shock with the AirTAC MFCJ25X175-10S. This double-acting, JIS-standard round-body mini cylinder features a 10 mm external adjuster that shortens the 175 mm extend stroke on-site, while needle variable air cushions at both ends soak up end-of-stroke impact. The riveted SUS304 stainless barrel and aluminium covers resist mild corrosion and washdown.
Delivering 245.3 N push force at 0.5 MPa (343.4 N at 0.7 MPa) through a 1/8" port, it suits moderate load moves. The built-in -S magnet supports CMSG/DMSG/EMSG sensors. For the same bore and stroke, this compact body is shorter than an ISO 6432 cylinder, saving valuable mounting length without claiming ISO compliance.
| Model | Airtac MFCJ Adjustable Mini Cylinder MFCJ25X175-10S |
|---|---|
| Series | MFCJ JIS mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 175 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.
| 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.
| MFCJ | JIS-standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 25 | Bore size in mm. |
| ×175 | 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.
Trim the 175 mm extend stroke by up to 10 mm on-site to set exact stop positions for parts varying slightly in size, using the needle cushion to halt the 245.3 N thrust smoothly.
Divert lightweight packages at speed; the variable air cushion absorbs the end-of-stroke shock while the magnet confirms actuation for the controller.
Perfect for R&D benches needing iterative stroke tuning and washdown-ready SUS304 construction, lifting roughly 12.5 kg test rigs vertically with a safe 2:1 margin.
When sizing this series, compare the real thrust: the 25 mm bore gives 245.3 N push at 0.5 MPa, sitting neatly between the MFCJ20 at 157 N and the MFCJ32 at 402.2 N. Choose the 25 mm when you need roughly 147 N safe working load (about 60% of the 0.5 MPa push) or to lift around 12.5 kg vertically with a 2:1 margin. The 10 mm adjustable window and variable air cushion are perfect for high-speed changeovers and shock-sensitive trial fits.
Mount using LB foot, FA flange, or TC trunnion brackets (no SDB or back-cover here). The -S magnet enables position sensing with CMSG/DMSG/EMSG switches. Note that the air cushion only decelerates the piston near stroke end—it is not a lock. If you must hold a load on air loss, add an external rod lock or pilot check valve.
Quick checklist
This 25 mm bore cylinder uses a 1/8" 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.
The external adjuster shortens the extend stroke by up to 10 mm (usable range 165-175 mm); retract remains full. Needle variable air cushions at both ends decelerate the piston for smooth stops, but this is not a load-holding lock. The -S suffix means it has a magnet for CMSG/DMSG/EMSG sensors.
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