
The AirTAC Airtac MFC Cushioned Stainless Steel Mini Cylinder MFC20X300CM is a genuine double acting + cushion JIS-standard round-body mini air cylinder with a Ø20mm bore and 300mm 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 JIS-standard round-body mini cylinder integrates a needle-set variable air cushion at both ends to absorb high-speed end-of-stroke shock. The SUS304 stainless barrel and riveted aluminium covers resist mild corrosion and washdown environments. For the same 20 mm bore and 300 mm stroke, the riveted rolling-packed body is physically shorter than a standard ISO 6432 cylinder, saving valuable mounting length.
Equipped with a CM round-end rear cover, the unit drives an 8 mm rod via a 1/8" port. It yields a safe working load of about 94 N (roughly 60% of the 0.5 MPa push rating) and lifts around 8 kg vertically with a 2:1 safety margin. Note that this specific SKU lacks a magnet, so it cannot host CMSG, DMSG or EMSG sensors without switching to an -S variant.
| Model | Airtac MFC Cushioned Stainless Steel Mini Cylinder MFC20X300CM |
|---|---|
| Series | MFC JIS mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 300 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. |
| ×300 | 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 at 0.5 MPa to push small cartons off a high-speed belt, relying on the variable air cushion to stop the 300 mm travel without harsh impacts.
Maintains steady tension on packaging film webs where the 8 kg vertical lift capacity and smooth needle-adjusted end deceleration prevent web tearing.
Indexes light plastic components into a machining station, using the compact JIS body to save space while the air cushion protects fragile parts at cycle end.
When sizing this 20 mm bore actuator, step down if speeds are low and space is tight, or step up to the MFC25 which provides 245.3 N of push force at 0.5 MPa if your payload exceeds the 94 N safe working load. The adjustable air cushion is essential for this 300 mm stroke when operating at high speeds or moving heavy masses, as it decelerates the piston smoothly to protect the mechanics.
Because this is a plain double-acting cylinder, it will not hold a load if air pressure drops or the valve is centred, the piston will drift. Fit an external rod lock or pilot-operated check valve for suspended loads. Furthermore, since this configuration ships without a magnet, position sensing is impossible; choose the -S option to enable CMSG, DMSG or EMSG switches.
Quick checklist
This 20 mm bore cylinder features a 1/8" port and an 8 mm rod. 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.
No, this specific SKU does not include a magnet, so CMSG, DMSG or EMSG switches will not function. You must select the -S variant for position sensing. The cylinder features a SUS304 stainless barrel and a variable air cushion, but the cushion only decelerates the load near stroke end and does not act as a lock.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
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