
The AirTAC Airtac MFC Cushioned Stainless Steel Mini Cylinder MFC20X250CM is a genuine double acting + cushion JIS-standard round-body mini air cylinder with a Ø20mm bore and 250mm 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.
Generating 157 N of push force at 0.5 MPa, this double-acting 20 mm bore mini cylinder tackles 250 mm strokes with a needle-set variable air cushion at both ends to soak up high-speed shock. The riveted aluminium covers and SUS304 stainless barrel resist mild corrosion and washdown, while the CM round-end rear cover provides a clean mounting interface. For the same bore and stroke, the JIS-standard body is notably shorter than an ISO 6432 cylinder, saving valuable machine space.
Driven by a two-way oil-retaining seal and a fixed front anti-impact pad, it operates at 30-800 mm/s on a 1/8" port with an M8x1.25 male rod thread. Based on the 0.5 MPa push rating, it handles a safe working load of roughly 94 N and lifts about 8 kg vertically with a 2:1 margin. Note this SKU lacks a magnet, so it cannot accept CMSG, DMSG or EMSG sensors without switching to an -S variant.
| Model | Airtac MFC Cushioned Stainless Steel Mini Cylinder MFC20X250CM |
|---|---|
| Series | MFC JIS mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 250 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. |
| ×250 | 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.
Pushes small packages on a 250 mm stroke at high speed, relying on the adjustable air cushion to stop the 157 N thrust smoothly without slamming.
Moves a guide roll through 250 mm of travel; the SUS304 barrel withstands wipe-down chemicals in packaging environments.
Ejects moulded parts from a tight cell where the shorter-than-ISO-6432 body length prevents interference with adjacent tooling.
If 157 N at 0.5 MPa is insufficient, step up to the MFC25 (245.3 N); if you need less force in a tighter footprint, the 20 mm bore is the smallest available MFC option. The variable air cushion is essential when cycling heavy loads at high speeds, as it decelerates the piston near stroke end to reduce impact noise—though it acts purely as a shock absorber, never as a lock. Because this non-magnetic SKU cannot host a position sensor, you must verify stroke completion mechanically or upgrade to an -S model for CMSG, DMSG or EMSG switches. To prevent drift on air loss, install an external rod lock or pilot-operated check valve.
Quick checklist
This 20 mm bore cylinder has 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.
No, this specific SKU does not include a magnet and cannot accept CMSG, DMSG or EMSG switches. You would need the -S variant for sensing. The cylinder features a variable air cushion at both ends to decelerate loads, but this is not a braking mechanism; use a pilot check valve or rod lock to hold loads.
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