
The AirTAC Airtac MFCJ Adjustable Mini Cylinder MFCJ25X100-100 is a genuine double acting, adjustable stroke + cushion JIS-standard round-body mini air cylinder with a Ø25mm bore and 100mm 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 the exact extend end-point on-site with the MFCJ25X100-100, which features an external adjuster that shortens the forward stroke by up to 100 mm. This JIS-standard round-body mini cylinder pairs that flexibility with a needle-set variable air cushion at both ends to soak up high-speed shock. Its SUS304 stainless barrel and riveted aluminium covers resist mild corrosion and washdown, while the compact riveted body is shorter than an ISO 6432 cylinder for the same bore and stroke.
Operating on a 1/8" port with a 10 mm male rod thread (M10x1.25), this double-acting unit delivers 245.3 N of push force at 0.5 MPa. That translates to a safe working load of roughly 147 N, letting you lift about 12.5 kg vertically with a 2:1 margin. Note this SKU lacks the -S magnet, so it cannot accept position sensors.
| Model | Airtac MFCJ Adjustable Mini Cylinder MFCJ25X100-100 |
|---|---|
| Series | MFCJ JIS mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 100 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. |
| ×100 | 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.
Tune the extend stroke on a multi-product line to feed delicate probes, using the 245.3 N push force to seat parts without slamming.
Set a precise 0-100 mm extension and dial in the needle air cushion to silently divert light cartons at high cycle rates.
Ideal for trial-fit rigs where the exact end position and end-of-stroke shock both need field adjustment to protect test samples.
When sizing this adjustable family, compare the real thrust: the MFCJ25 hits 245.3 N push at 0.5 MPa, sitting between the MFCJ20 at 157 N and the MFCJ32 at 402.2 N. Choose the 25 mm bore when your changeover or trial-fit fixture needs that mid-range force alongside a tunable 0-100 mm extend window and end-of-stroke cushioning. The needle cushion decelerates the piston near the ends but does not lock or hold the load—if air drops, the rod drifts, so add an external rod lock or pilot check valve for suspended loads.
Mounting options include LB foot, FA flange, and TC trunnion (no SDB or back-cover mount exists on this build). Because this specific code omits the -S suffix, it cannot host CMSG, DMSG, or EMSG switches; order the magnet-equipped variant if your sequence requires electronic confirmation.
Quick checklist
This 25 mm bore double-acting cylinder uses a 1/8" port. 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.
This specific SKU lacks the -S magnet, so it cannot accept CMSG, DMSG, or EMSG switches. The external adjuster shortens the extend stroke by up to 100 mm on-site, while the variable air cushion at both ends decelerates the piston near the ends—it is not a mid-stroke lock or brake.
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