Airtac MFC Cushioned Stainless Steel Mini Cylinder MFC20X120SU
The AirTAC Airtac MFC Cushioned Stainless Steel Mini Cylinder MFC20X120SU is a genuine double acting + cushion JIS-standard round-body mini air cylinder with a Ø20mm bore and 120mm 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.
- BoreØ20 mm
- Stroke120 mm
- Port size1/8"
- Acting typeDouble acting + cushion
- Rod threadM8×1.25
- CushionVariable air cushion, both ends
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac MFC Cushioned Stainless Steel Mini Cylinder MFC20X120SU
Delivering 157 N of push force at 0.5 MPa, this double-acting 20 mm bore mini cylinder relies on a needle-set variable air cushion at both ends to soak up high-speed end-of-stroke shock. The riveted SUS304 stainless barrel and aluminium covers resist mild corrosion and washdown. Because it carries the -S suffix, a built-in piston magnet enables CMSG, DMSG and EMSG switches for position sensing, while the U flat-end rear cover suits direct mounting.
For the same 20 mm bore and 120 mm stroke, the JIS-standard round body is physically shorter than an ISO 6432 cylinder, saving valuable machine space without conforming to that standard. Operating on a 1/8" port at speeds from 30 to 800 mm/s, it provides a computed safe working load of roughly 94 N, lifting about 8 kg vertically with a 2:1 safety margin.
Airtac MFC Cushioned Stainless Steel Mini Cylinder MFC20X120SU Technical Specifications
| Model | Airtac MFC Cushioned Stainless Steel Mini Cylinder MFC20X120SU |
|---|---|
| Series | MFC JIS mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 120 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.
Theoretical Output Force (Ø20mm)
| 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.
Model Code: Airtac MFC Cushioned Stainless Steel Mini Cylinder MFC20X120SU
| MFC | JIS-standard round-body mini cylinder (double-acting, variable cushion). |
|---|---|
| 20 | Bore size in mm. |
| ×120 | 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.
Where the Airtac MFC Cushioned Stainless Steel Mini Cylinder MFC20X120SU Is Used
Light-Part Ejection
Uses the 157 N push force to eject small moulded components rapidly, relying on the variable air cushion to prevent bounce at the 120 mm stroke end.
Package Diverting
Diverts lightweight cartons on a line where the U flat-end cover mounts flush and the adjustable cushion absorbs the repetitive high-speed impact.
Small-Part Clamping
Clamps delicate assemblies securely during machining, with the needle-set cushion slowing the rod to avoid crushing the workpiece.
Is the Airtac MFC Cushioned Stainless Steel Mini Cylinder MFC20X120SU the Right Cylinder?
If 157 N of push at 0.5 MPa is insufficient, step up to the MFC25 which yields 245.3 N; there is no smaller MFC bore. The variable air cushion is essential when cycling heavy loads at high velocity, as it decelerates the piston near stroke end to protect the workpiece. Remember that the cushion only decelerates and never acts as a lock or brake; if you must prevent drift on air loss, fit an external rod lock or pilot check valve. Mounting options include LB foot, FA flange, SDB pivot and TC trunnion, and the -S magnet on this SKU allows seamless sensor integration.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT / G / NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Back cover (CA/U/CM) & mount (LB/FA/SDB/TC)
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Avoid side load on the piston rod.
- check Do not dismantle the riveted front/back covers.
- check Use correct back cover (CA/U/CM) & mount (LB/FA/SDB/TC).
- check Installation by qualified personnel per AirTAC docs.
Airtac MFC Cushioned Stainless Steel Mini Cylinder MFC20X120SU FAQ
This 20 mm bore cylinder features a 1/8" port and an 8 mm rod with an M8x1.25 male 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, the variable air cushion only decelerates the piston near the stroke end and does not function as a brake or lock. If you need to hold a vertical load against gravity during air loss, you must install an external rod lock or a pilot-operated check valve.
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Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
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