
The AirTAC Airtac MFC Cushioned Stainless Steel Mini Cylinder MFC20X115SU is a genuine double acting + cushion JIS-standard round-body mini air cylinder with a Ø20mm bore and 115mm 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, the AirTAC MFC20X115SU is a JIS-standard round-body mini cylinder built for double-acting operation. Its riveted aluminium covers and SUS304 stainless barrel resist mild corrosion and washdown environments. For the same bore and stroke, this compact body is noticeably shorter than an ISO 6432 cylinder, saving valuable mounting length.
A variable air cushion at both ends lets you turn a needle to soak up high-speed end-of-stroke shock, protecting the load and cutting noise. The built-in -S piston magnet supports CMSG, DMSG and EMSG switches for position sensing, while the U flat-end rear cover simplifies direct mounting. Derived from its 0.5 MPa push rating, the safe working load is about 94 N, meaning it lifts roughly 8 kg vertically with a 2:1 margin.
| Model | Airtac MFC Cushioned Stainless Steel Mini Cylinder MFC20X115SU |
|---|---|
| Series | MFC JIS mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 115 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. |
| ×115 | 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.
Routes small parcels at high speed on a belt line, using the variable air cushion to stop the 115 mm stroke gently without jarring the mechanism.
Applies up to 94 N of safe working force to seat delicate electronics or clips, where the SUS304 barrel withstands factory humidity.
Folds light cardboard flaps on a packaging line, relying on the U flat-end cover for flush rear mounting against machine frames.
When sizing this 20 mm bore, step down if force is lacking or move up to the MFC25, which provides 245.3 N of push at 0.5 MPa for heavier demands. The adjustable cushion is essential when cycling at high speeds or moving sensitive masses, as it decelerates the piston smoothly. Note that this cylinder does not hold position on air loss; the piston drifts, so add an external rod lock or pilot check valve for suspended loads. It uses a 1/8" port, features a male M8x1.25 rod thread, and accepts reed or electronic sensors via the -S magnet.
Quick checklist
This 20 mm bore double-acting cylinder uses a 1/8" port and an M8x1.25 male rod thread. It generates 157 N push and 131.9 N pull at 0.5 MPa, 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 indicates a built-in piston magnet for CMSG, DMSG or EMSG switches. The variable air cushion only decelerates the piston near stroke end and acts as neither a brake nor a lock; the cylinder drifts on air loss, so use a pilot check valve for vertical holding.
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