
The AirTAC Airtac MFC Cushioned Stainless Steel Mini Cylinder MFC20X30SCM is a genuine double acting + cushion JIS-standard round-body mini air cylinder with a Ø20mm bore and 30mm 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.
Soaking up high-speed end-of-stroke shock via a needle-set variable air cushion at both ends, this JIS-standard round-body mini cylinder protects your payload far better than a fixed bumper. The SUS304 stainless barrel and riveted aluminium covers resist mild corrosion and washdown, while the built-in piston magnet (-S) enables CMSG, DMSG or EMSG switches for position sensing.
Generating 157 N of push force at 0.5 MPa (131.9 N pull), the 20 mm bore yields a safe working load of roughly 94 N, lifting about 8 kg vertically with a 2:1 margin. It uses a 1/8" port and an M8x1.25 male rod thread; for the same 20 mm bore and 30 mm stroke, the riveted body is noticeably shorter than an ISO 6432 cylinder, saving valuable mounting length. The CM round-end back cover rounds out this double-acting actuator.
| Model | Airtac MFC Cushioned Stainless Steel Mini Cylinder MFC20X30SCM |
|---|---|
| Series | MFC JIS mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 30 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. |
| ×30 | 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.
Uses the 8 kg vertical lift capacity to push small plastic components out of a mould, relying on the variable air cushion to prevent bounce at high speed.
Sorts lightweight cartons on a line; the needle-set deceleration absorbs the shock of the 30 mm stroke impact without damaging the packaging.
Presses delicate bearings into housings where 94 N of safe working force is required, using the SUS304 body in a mildly humid plant environment.
If 157 N of push at 0.5 MPa is insufficient, step up to the MFC25 which provides 245.3 N; since 20 mm is the smallest available MFC bore, there is no smaller option. The variable air cushion is essential when cycling at high speeds or moving sensitive masses, allowing you to dial in the exact deceleration to eliminate banging. Note that this cylinder does not hold position on air loss—the piston drifts, and the cushion only decelerates near the stroke end, so add an external rod lock or pilot check valve for suspended loads. Mounting options include LB foot, FA flange, SDB pivot and TC trunnion.
Quick checklist
This double-acting cylinder has a 1/8" port and generates 157 N push / 131.9 N pull at 0.5 MPa, and 219.8 N push / 184.7 N pull at 0.7 MPa. Its theoretical maximum force is 32 kgf at 1.0 MPa.
No, the piston will drift on air loss. The variable air cushion only decelerates the piston near the stroke end and acts purely as a shock absorber, never as a lock or brake. To hold a load vertically, install an external rod lock or pilot-operated check valve.
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