
The AirTAC Airtac MFCJ Adjustable Mini Cylinder MFCJ25X150-100S 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.
Dial in exact extend lengths on-site with the AirTAC MFCJ25X150-100S, a JIS-standard round-body mini cylinder featuring a 100 mm adjustable stroke window. The external adjuster shortens the extend end from its 150 mm nominal maximum down to 50 mm, while the retract stroke remains full length. As a double-acting actuator with a 1/8" port and Ø10 mm rod, it delivers 245.3 N of push force at 0.5 MPa.
This variable air cushion model soaks up high-speed end-of-stroke shock at both ends for smooth, quiet operation between 30-800 mm/s. The riveted SUS304 stainless barrel and aluminium covers resist mild corrosion and washdown, while the JIS-standard body is physically shorter than an ISO 6432 cylinder of the same bore and stroke. The -S suffix indicates a built-in piston magnet for CMSG, DMSG, or EMSG switches. For sizing context, this bore 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 MFCJ25X150-100S |
|---|---|
| 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.
Fine-tune the extend stroke within the 100 mm window during automated tooling changeovers, using the variable air cushion to absorb high-speed impacts without shaking the fixture.
Sort lightweight goods on a 25 mm bore line where 245.3 N of push force is sufficient, adjusting the reach on-site to match varying lane widths.
Lift or stop items up to 12.5 kg vertically with a 2:1 safety margin, relying on the needle cushion to bring the load to a smooth stop at the top of the 150 mm stroke.
When sizing this adjustable series, compare the real thrust figures: the MFCJ25 provides 245.3 N push at 0.5 MPa, sitting between the smaller MFCJ20 at 157 N and the larger MFCJ32 at 402.2 N. Choose the 25 mm bore when your changeover requires fine-tuning the extend position within that 100 mm window without swapping the entire cylinder.
Mount this actuator using LB foot, FA flange, or TC trunnion brackets—there is no SDB mount or back-cover option on this adjustable build. Because the -S magnet is present, you can fit CMSG, DMSG, or EMSG sensors directly. Note that the air cushion only decelerates the piston near the stroke end; it does not lock or hold the load. If your application must prevent drift on air loss, install an external rod lock or pilot-operated check valve.
Quick checklist
This 25 mm bore cylinder features a 1/8" air port and a Ø10 mm piston rod. It generates 245.3 N push and 206.1 N pull at 0.5 MPa, 343.4 N push and 288.5 N pull at 0.7 MPa, with a theoretical maximum of 50 kgf at 1.0 MPa.
The external adjuster shortens the extend stroke by up to 100 mm on-site (usable range 50-150 mm), while the retract remains full length. The -S suffix means it has a built-in magnet for CMSG, DMSG, or EMSG switches. The variable air cushion at both ends only decelerates the piston; it does not hold the load.
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