
The AirTAC Airtac MFC Cushioned Stainless Steel Mini Cylinder MFC20X25SCM is a genuine double acting + cushion JIS-standard round-body mini air cylinder with a Ø20mm bore and 25mm 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.
Delivering 157 N of push force at 0.5 MPa, this double-acting 20 mm bore mini cylinder relies on a needle-set variable air cushion at both ends to soak up high-speed end-of-stroke shock. The riveted SUS304 stainless barrel and aluminium covers resist mild corrosion and washdown, while the JIS-standard round-body design is noticeably shorter than an ISO 6432 cylinder for the same 25 mm stroke, saving valuable mounting length.
For practical sizing, it yields a safe working load of roughly 94 N, meaning it lifts about 8 kg vertically with a 2:1 safety margin. The -S suffix indicates a built-in piston magnet ready for CMSG, DMSG or EMSG switches, and the CM round-end back cover suits compact pivot arrangements. Air connects via a 1/8" port.
| Model | Airtac MFC Cushioned Stainless Steel Mini Cylinder MFC20X25SCM |
|---|---|
| Series | MFC JIS mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 25 mm |
| Acting type | Double acting + cushion |
| Port size | 1/8" |
| Rod thread | M8×1.25 |
| 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 | 157 N | 132 N |
| 0.7 MPa | 220 N | 185 N |
| Max (@1.0 MPa) | 32 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
| MFC | JIS-standard round-body mini cylinder (double-acting, variable cushion). |
|---|---|
| 20 | Bore size in mm. |
| ×25 | 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.
Shoots small plastic mouldings out of a press at high speed, relying on the variable air cushion to prevent end-of-stroke slamming.
Pushes lightweight cartons on a conveyor; the 8 kg vertical lift capacity handles small goods without bouncing them off the line.
Fits into tight transfer stations where the short JIS body length saves space, while the -S magnet tracks the 25 mm stroke position.
If your payload exceeds the 94 N safe working load, step up to the MFC25, which provides 245.3 N of push force at 0.5 MPa; since 20 mm is the smallest available bore, there is no smaller MFC option. The variable air cushion is essential when cycling at high speeds or moving sensitive masses, as it decelerates the piston near the stroke end to protect the load.
Remember that the air cushion only decelerates and never acts as a lock or brake; the piston will drift if air pressure drops or the valve is centred. To hold a vertical load securely, fit an external rod lock or a pilot-operated check valve. The -S magnet enables position sensing, and you can mount the unit using LB foot, FA flange, SDB pivot or TC trunnion hardware.
Quick checklist
This 20 mm bore, 25 mm stroke double-acting cylinder uses a 1/8" air port and an M8x1.25 male rod thread. It generates 157 N push and 131.9 N pull at 0.5 MPa, or 219.8 N push and 184.7 N pull at 0.7 MPa, with a theoretical maximum of 32 kgf at 1.0 MPa.
The -S suffix means it has a built-in magnet for CMSG, DMSG or EMSG sensors. The variable air cushion only decelerates the piston near the stroke end; it does not lock or hold position on air loss, so you need an external rod lock or pilot check valve for vertical loads.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
Standard models are processed and dispatched in 3-5 business days.
Most inquiries answered within 7-8 hours.
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.