
The AirTAC Airtac MFC Cushioned Stainless Steel Mini Cylinder MFC20X150SU is a genuine double acting + cushion JIS-standard round-body mini air cylinder with a Ø20mm bore and 150mm 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.
Dial in end-of-stroke deceleration with the AirTAC MFC20X150SU, a JIS-standard round-body mini cylinder built for high-speed actuation. An adjustable needle valve at both ends soaks up kinetic energy, protecting your payload and cutting noise far better than a fixed rubber bumper. The SUS304 stainless barrel and riveted aluminium covers resist mild corrosion and washdown, while the U-style flat-end rear cover keeps the overall footprint tight.
At its core is a 20mm bore and 150mm stroke driven by an 8mm rod, pushing 157N and pulling 131.9N at 0.5MPa. For a practical vertical lift with a 2:1 safety margin, expect it to handle about 8kg. Because the -S suffix equips the piston with a magnet, you can mount CMSG, DMSG, or EMSG switches for position sensing. The 1/8" port feeds the double-acting chambers, and for the same bore and stroke, this riveted body is notably shorter than an ISO 6432 cylinder.
| Model | Airtac MFC Cushioned Stainless Steel Mini Cylinder MFC20X150SU |
|---|---|
| Series | MFC JIS mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 150 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. |
| ×150 | 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.
Cushions the 150mm stroke ejection of small plastic parts at high cycle rates, preventing the 8mm rod from slamming and marking the components.
Provides a smooth 157N push to fold light packaging flaps without tearing the cardboard, absorbing the shock at the end of the 150mm travel.
Handles the rapid diverting of small items on a conveyor, using the adjustable end-cushioning to stop the 8kg payload gently without bouncing.
If 157N of push at 0.5MPa is too much for a delicate assembly step, you lack a smaller MFC option and must rely on a pressure regulator. If your load demands more thrust, step up to the MFC25, which delivers 245.3N at 0.5MPa. Choose this variable air cushion model specifically when cycling at high speeds or moving masses that would slam harshly into the end caps.
Remember that the cushion needle only decelerates the piston near the stroke end; it does not function as a brake. If air pressure drops or the valve is centred, the rod will drift, so fit an external rod lock or pilot check valve to suspend loads safely. The U back cover suits flush mounting, and the integrated magnet is ready for your sensors.
Quick checklist
This 20mm bore cylinder uses a 1/8" port and an M8x1.25 male rod thread. It generates 157N push and 131.9N pull at 0.5MPa, 219.8N push and 184.7N pull at 0.7MPa, with a theoretical maximum of 32kgf at 1.0MPa.
No, the variable air cushion only decelerates the piston near the end of its stroke and acts purely as a shock absorber, never a lock. If air drops, the rod drifts, so you must install an external rod lock or pilot check valve to hold a suspended load safely.
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