
The AirTAC Airtac MFCJ Adjustable Mini Cylinder MFCJ25X150-75S is a genuine double acting, adjustable stroke + cushion JIS-standard round-body mini air cylinder with a Ø25mm bore and 150mm 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.
Trim the extend stroke by up to 75 mm on site while dialling in needle air cushions at both ends for smooth, high-speed motion. This double-acting JIS-standard round-body mini cylinder features a SUS304 stainless barrel and riveted aluminium covers, offering a shorter mounting length than an ISO 6432 unit for the same 25 mm bore and 150 mm stroke.
Fitted with a piston magnet (-S) for CMSG, DMSG or EMSG sensors, it delivers 245.3 N push force at 0.5 MPa via a 1/8" port. The adjustable end position is perfect for changeovers, and the cushion soaks up end-of-stroke shock without acting as a brake. It yields a safe working load of roughly 147 N, lifting about 12.5 kg vertically with a 2:1 margin.
| Model | Airtac MFCJ Adjustable Mini Cylinder MFCJ25X150-75S |
|---|---|
| Series | MFCJ JIS mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 150 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. |
| ×150 | 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.
Dial in the exact 75-150 mm extend position for pressing light fittings, using the needle cushion to absorb the 245.3 N end-of-stroke impact quietly.
Fine-tune the diverting stroke length on the fly during product changeovers, relying on the SUS304 barrel to withstand mild washdown on the line.
Lift items up to 12.5 kg with a 2:1 safety margin, adjusting the extend end to hit precise stopping heights without banging the payload.
When sizing this series, compare the real thrust figures: the 25 mm bore offers 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 bore when you need that mid-range force alongside a 75 mm on-site stroke adjustment window for trial fits or shock-sensitive changeovers.
Mounting uses LB foot, FA flange or TC trunnion brackets (no SDB or back-cover option here). The -S magnet enables position sensing, but remember the air cushion only decelerates near the stroke end—it will not hold a load on air loss. For vertical or suspended loads, add an external rod lock or pilot check valve.
Quick checklist
This 25 mm bore cylinder uses a 1/8" port and delivers 245.3 N push and 206.1 N pull at 0.5 MPa. At 0.7 MPa it provides 343.4 N push and 288.5 N pull, with a theoretical maximum force of 50 kgf at 1.0 MPa.
The external adjuster shortens the extend stroke by up to 75 mm (usable range 75-150 mm), while the variable air cushion at both ends decelerates the piston near the ends for high-speed cycles. The -S suffix means it has a magnet for CMSG/DMSG/EMSG sensors. The cushion is not a brake; for load holding on air loss, install an external rod lock or pilot check valve.
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