
The AirTAC Airtac MFC Cushioned Stainless Steel Mini Cylinder MFC20X70SCM is a genuine double acting + cushion JIS-standard round-body mini air cylinder with a Ø20mm bore and 70mm 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.
Equipped with a needle-set variable air cushion at both ends, the AirTAC MFC20X70SCM tames high-speed end-of-stroke shock to protect your payload. This JIS-standard round-body mini cylinder features a SUS304 stainless barrel and riveted aluminium covers, offering reliable mild corrosion resistance for washdown environments. For the same 20 mm bore and 70 mm stroke, its body is noticeably shorter than an ISO 6432 cylinder, saving valuable mounting length.
Driven by filtered air at 0.15-1.0 MPa, this double-acting actuator generates 157 N of push force and 131.9 N of pull force at 0.5 MPa. The front cover carries a fixed anti-impact pad alongside the adjustable cushion, while the rear uses a CM round-end cover. Because this SKU includes the -S magnet, it is fully ready for CMSG, DMSG, or EMSG position switches. In practical terms, it handles a safe working load of roughly 94 N, meaning it can lift about 8 kg vertically with a 2:1 safety margin.
| Model | Airtac MFC Cushioned Stainless Steel Mini Cylinder MFC20X70SCM |
|---|---|
| Series | MFC JIS mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 70 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. |
| ×70 | 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.
Snaps small cartons off a high-speed belt at up to 800 mm/s, using the adjustable air cushion to halt the 8 kg payload smoothly without crushing the board.
Presses delicate electronic connectors into housings, relying on the 157 N push force and fixed front bumper to seat components without impact damage.
Moves a fluid valve head in a washdown testing cell, where the SUS304 stainless barrel shrugs off mild moisture and the compact body fits tight clearances.
When sizing this 20 mm bore actuator, compare it directly against the next size up: the MFC25 delivers 245.3 N of push force at 0.5 MPa, providing a clear upgrade path if your payload outgrows this cylinder's 157 N capacity. Since 20 mm is the smallest available MFC bore, stepping down requires switching to a different cylinder family entirely. The variable air cushion is essential if you are cycling near the 800 mm/s speed limit or moving heavy masses, letting you dial in the exact deceleration curve to prevent bounce.
Remember that the air cushion only decelerates the piston near the stroke end; it does not function as a brake. If your application must hold a vertical load during a pressure drop or when a valve is centered, the piston will drift, so you must add an external rod lock or a pilot-operated check valve. This model's built-in -S magnet allows seamless mounting of CMSG, DMSG, or EMSG sensors, and its 1/8" port matches standard mini-cylinder pneumatics.
Quick checklist
This double-acting 20 mm bore cylinder has a 1/8" air 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 force of 32 kgf at 1.0 MPa.
No, the variable air cushion and fixed bumper only decelerate the piston near the end of the stroke; they do not act as a lock or brake. The piston will drift on air loss or when a valve is centered, so you should use an external rod lock or pilot check valve for suspended loads.
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