
The AirTAC Airtac MFC Cushioned Stainless Steel Mini Cylinder MFC20X230SU is a genuine double acting + cushion JIS-standard round-body mini air cylinder with a Ø20mm bore and 230mm 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.
Designed to absorb high-velocity shocks, the AirTAC MFC20X230SU features a needle-adjustable variable air cushion at both ends that outperforms standard bumper mini cylinders. This JIS-standard round-body unit pairs a SUS304 stainless steel barrel with riveted aluminium covers to resist mild corrosion and washdown environments. It is double-acting, carries a 230 mm stroke, and is notably shorter than an ISO 6432 cylinder for the same bore and stroke, saving valuable mounting length.
Operating on a 1/8" port with an 8 mm rod, the 20 mm bore generates 157 N of push force at 0.5 MPa. This 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 equips the piston with a built-in magnet for CMSG, DMSG, or EMSG switches, while the U flat-end rear cover provides flexible mounting options.
| Model | Airtac MFC Cushioned Stainless Steel Mini Cylinder MFC20X230SU |
|---|---|
| Series | MFC JIS mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 230 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. |
| ×230 | 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 157 N push force to deflect light cartons on a high-speed sorting line, relying on the variable air cushion to stop the 230 mm stroke smoothly without jarring the goods.
Pushes delicate plastic mouldings out of a machining fixture, using the U flat-end cover for flush mounting and the needle-set cushion to prevent scuff marks at rapid cycle rates.
Advances empty packaging trays along a guide rail, where the SUS304 stainless barrel shrugs off incidental washdown and the -S magnet tracks position via a DMSG sensor.
For lighter payloads, this 20 mm bore provides 131.9 N pull at 0.5 MPa; if your application demands more thrust, sizing up to the MFC25X230S delivers 245.3 N at the same pressure. The adjustable cushion is essential when cycling at high speeds or moving sensitive loads, as the needle valve lets you dial in the exact deceleration to protect the workpiece. Remember that the cushion only slows the piston near the end of the stroke—it does not function as a brake or lock. If your system loses air, the piston will drift, so you must add an external rod lock or pilot-operated check valve to hold a suspended load safely.
Quick checklist
This 20 mm bore double-acting cylinder uses a 1/8" port and generates 157 N push and 131.9 N pull at 0.5 MPa. At 0.7 MPa it produces 219.8 N push and 184.7 N pull, with a theoretical maximum force of 32 kgf at 1.0 MPa.
Yes, the -S suffix indicates a built-in piston magnet for CMSG, DMSG, or EMSG switches. However, the variable air cushion only decelerates the piston near stroke end and is not a lock; the cylinder cannot hold a load on air loss, so an external rod lock or pilot check valve is required for vertical holding.
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