Airtac MFC Cushioned Stainless Steel Mini Cylinder MFC20X40SU
The AirTAC Airtac MFC Cushioned Stainless Steel Mini Cylinder MFC20X40SU is a genuine double acting + cushion JIS-standard round-body mini air cylinder with a Ø20mm bore and 40mm 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
- Stroke40 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 MFC20X40SU
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 riveted aluminium covers and SUS304 stainless barrel resist mild corrosion and washdown environments, while the integrated piston magnet enables position sensing. For the same 20 mm bore and 40 mm stroke, the MFC body is notably shorter than an ISO 6432 cylinder, saving valuable mounting length without conforming to that standard.
Equipped with a U flat-end rear cover and an 8 mm rod, it provides a safe working load of roughly 94 N (about 60% of the 0.5 MPa push force) and lifts approximately 8 kg vertically with a 2:1 margin. The 1/8" air port keeps airflow efficient across the 30-800 mm/s speed range. Because the -S magnet is present, you can directly mount CMSG, DMSG, or EMSG reed and electronic switches for precise end-position detection.
Airtac MFC Cushioned Stainless Steel Mini Cylinder MFC20X40SU Technical Specifications
| Model | Airtac MFC Cushioned Stainless Steel Mini Cylinder MFC20X40SU |
|---|---|
| Series | MFC JIS mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 40 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 MFC20X40SU
| MFC | JIS-standard round-body mini cylinder (double-acting, variable cushion). |
|---|---|
| 20 | Bore size in mm. |
| ×40 | 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 MFC20X40SU Is Used
Small Package Diverting
Uses the 8 kg vertical lift capacity to actuate light diverter arms on packaging lines, relying on the needle-set air cushion to stop the 40 mm stroke smoothly without slamming.
Electronic Component Pick-and-Place
Moves delicate PCBs at high cycle rates where the SUS304 barrel offers washdown resistance and the -S magnet allows CMSG sensors to confirm grip positions.
Compact Part Ejection
Fits into tight machine cells where being shorter than an ISO 6432 cylinder matters, ejecting molded parts weighing up to 94 N safely using the U flat-end cover.
Is the Airtac MFC Cushioned Stainless Steel Mini Cylinder MFC20X40SU the Right Cylinder?
If 94 N of safe working load is insufficient, step up to the MFC25 bore which provides 245.3 N of push force at 0.5 MPa; there is no smaller MFC bore below 20 mm. The variable air cushion is essential when driving heavier masses at high speeds, as it decelerates the piston near the stroke ends to reduce impact noise. Remember that the cushion only slows the piston and is not a brake—this cylinder will drift on air loss or when a valve is centered, so fit an external rod lock or pilot-operated check valve if you need to hold a suspended load. Alongside the U flat-end cover, you can mount the body using LB foot, FA flange, SDB pivot, or TC trunnion brackets.
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 MFC20X40SU FAQ
This 20 mm bore cylinder features a 1/8" air 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.
The -S suffix means it has a built-in piston magnet for CMSG, DMSG, or EMSG sensors. It cannot hold a load on air loss because the air cushion only decelerates the piston near stroke end rather than acting as a lock; use a pilot check valve for vertical holding.
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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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