
The AirTAC Airtac MFCJ Adjustable Mini Cylinder MFCJ25X600-100S is a genuine double acting, adjustable stroke + cushion JIS-standard round-body mini air cylinder with a Ø25mm bore and 600mm 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 MFCJ25X600-100S, a JIS-standard round-body mini cylinder built for demanding changeovers. Featuring a SUS304 stainless barrel and riveted aluminium covers, this double-acting actuator uses an external adjuster to shorten the extend stroke by up to 100 mm on-site, while needle variable air cushions at both ends soak up end-of-stroke impact. The 600 mm base length is a non-standard, made-to-order stroke that exceeds the 500 mm standard maximum for this series.
Driven by a 1/8" port and a Ø10 mm rod with an M10x1.25 male thread, it delivers 245.3 N push force at 0.5 MPa, making a safe working load of roughly 147 N ideal for reliable cycling. Because the -S suffix includes a piston magnet, you can mount CMSG, DMSG, or EMSG sensors for position feedback. For the same bore and stroke, this compact JIS body is shorter than an ISO 6432 cylinder, saving valuable mounting length without relying on a tie-rod or extruded profile design.
| Model | Airtac MFCJ Adjustable Mini Cylinder MFCJ25X600-100S |
|---|---|
| Series | MFCJ JIS mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 600 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. |
| ×600 | 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.
Use the 100 mm extend adjuster to fine-tune a 600 mm reach for part inspection stations, leveraging the 245.3 N push force to cycle heavy fixtures.
Soak up end-of-stroke shock on fast sorting gates with variable air cushions, while the built-in magnet triggers DMSG sensors for tracking.
Lift loads up to 12.5 kg with a 2:1 safety margin, adjusting the extend endpoint on-site to match varying package sizes without changing the cylinder.
When sizing this adjustable variant, compare the real force outputs: 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. This makes the MFCJ25X600-100S perfect for applications needing about 147 N of safe working load, or vertical lifts around 12.5 kg with a 2:1 margin. The 100 mm adjustable window is invaluable for trial fits where the exact extend endpoint must be tuned on the machine, while the variable air cushion handles high 30-800 mm/s speeds smoothly.
Mounting options include LB foot, FA flange, and TC trunnion (no SDB or back-cover code is available on this adjustable build). Remember that the cushion only decelerates the piston near the stroke end—it is not a lock or brake. If your application must hold a vertical load on air loss, add an external rod lock or pilot-operated check valve, as the piston will drift otherwise.
Quick checklist
This 25 mm bore 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. Note that the 600 mm stroke is non-standard and made-to-order.
The external adjuster shortens the extend stroke by up to 100 mm on-site, but it does not lock the piston mid-stroke. Variable air cushions at both ends decelerate the piston near the endpoints to absorb high-speed shock. The -S suffix provides a magnet for CMSG/DMSG/EMSG sensors.
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