The AirTAC Airtac MF Mini Cylinders MF25X300SCM is a genuine double acting JIS-standard round-body mini air cylinder with a Ø25mm bore and 300mm 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.
Pushing 245.3 N at 0.5 MPa (343.4 N at 0.7 MPa), the MF25X300SCM is a 25 mm bore, 300 mm stroke double-acting mini cylinder built to the JIS round-body format: a SUS304 stainless barrel riveted to aluminium-alloy covers in a rolling-packed construction - no tie-rods, no extruded profile. For the same bore and stroke the body runs shorter than an ISO 6432 cylinder, so it slots into tighter fixtures and saves mounting length. The 1/8" air port (PT as standard, G or NPT(T) on request) and M10x1.25 male rod thread on the 10 mm rod are fixed by the bore.
The piston's heterogeneous two-way seal retains an oil film for long seal life, while fixed TPU bumper pads and a front-cover anti-impact pad soften the stroke ends - they decelerate, they are not an adjustable cushion (that is the MFC variant). The built-in piston magnet works with CMSG, DMSG or EMSG switches for position signalling. In practice, plan on roughly 147 N of usable work at 0.5 MPa (about 60% of the rated push), which corresponds to lifting a part of about 12.5 kg vertically with a 2:1 margin. Note that when air is lost or the valve centres, the rod drifts freely - add an external rod lock or pilot check valve if the load must be held.
| Model | Airtac MF Mini Cylinders MF25X300SCM |
|---|---|
| Series | MF JIS mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 300 mm |
| Acting type | Double acting |
| 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 | Fixed TPU bumper pads |
| 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.
| MF | JIS-standard round-body mini cylinder (double-acting). |
|---|---|
| 25 | Bore size in mm. |
| ×300 | 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.
With 245.3 N of push at 0.5 MPa, the 25 mm bore closes folded carton flaps reliably at conveyor speed, and the short JIS body fits the cramped frame space beside a case packer.
The 300 mm stroke reaches across a pallet strap channel to press the buckle home; the bumper pads soften the strike so the strapper head does not rebound.
Around 147 N of practical working force at 0.5 MPa sweeps off-spec bottles off a washdown-prone beverage conveyor, with the SUS304 barrel resisting splash corrosion and the magnet signalling extend/retract to the PLC.
At 25 mm bore this model sits mid-range: the MF20 delivers about 157 N at 0.5 MPa if your load is lighter, while stepping up to the MF32 raises push force to 402.2 N at 0.5 MPa if you need more headroom. With a 300 mm stroke, keep side loads off the 10 mm rod and guide the payload externally - slender round-body rods bend before they break. The CM round-end back cover on this unit suits pivot arrangements; LB foot, FA flange, SDB pivot-block and TC trunnion mountings are available, and the -S magnet means CMSG/DMSG/EMSG switches can be fitted directly. Remember the cylinder cannot hold position on air loss - specify an external rod lock or pilot-operated check valve for suspended loads.
Quick checklist
At 0.5 MPa it pushes 245.3 N and pulls 206.1 N; at 0.7 MPa push rises to 343.4 N and pull to 288.5 N. The theoretical maximum is 50 kgf at 1.0 MPa. Operating pressure spans 0.15-1.0 MPa (proof 1.5 MPa), speed 30-800 mm/s, temperature -20 to +70 C, with a 1/8" port and M10x1.25 male rod thread on the 10 mm rod.
No - it is built to the JIS round-body standard, which makes the body shorter than an ISO 6432 cylinder of the same bore and stroke, a genuine advantage in tight fixtures. The barrel is SUS304 stainless riveted to aluminium covers, with fixed TPU bumpers (not an adjustable cushion). The -S suffix means a piston magnet is built in, so CMSG, DMSG or EMSG switches can be clipped on for position feedback.
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