Airtac MFC Cushioned Stainless Steel Mini Cylinder MFC20X40U
The AirTAC Airtac MFC Cushioned Stainless Steel Mini Cylinder MFC20X40U 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 MFC20X40U
Delivering 157 N of push force at 0.5 MPa, this double-acting mini cylinder relies on a needle-set variable air cushion at both ends to soak up high-speed end-of-stroke shock. The MFC20X40U features a JIS-standard round-body construction with a SUS304 stainless barrel and riveted aluminium covers, yielding a body that is physically shorter than an ISO 6432 cylinder for the same 20 mm bore and 40 mm stroke. A flat-end U back cover equips this specific unit.
The bore-fixed 1/8" port feeds an 8 mm piston rod with an M8x1.25 male thread, cycling at 30-800 mm/s. Based on the 0.5 MPa thrust, expect a safe working load around 94 N, lifting about 8 kg vertically with a 2:1 margin. Note that this SKU lacks the -S magnet, meaning it cannot accept CMSG, DMSG, or EMSG sensors.
Airtac MFC Cushioned Stainless Steel Mini Cylinder MFC20X40U Technical Specifications
| Model | Airtac MFC Cushioned Stainless Steel Mini Cylinder MFC20X40U |
|---|---|
| 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 MFC20X40U
| 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 MFC20X40U Is Used
Light-Part Ejection
Shoots small plastic or aluminium parts out of a machining fixture at speed, using the variable air cushion to halt the 40 mm stroke gently without bouncing the component.
Flap Deflection
Pushes carton flaps clear on a compact packaging line where the 94 N safe working load easily overcomes board resistance, fitting neatly into tight machine envelopes.
Small-Sort Diverter
Extends rapidly to knock lightweight parcels onto a secondary track, relying on the SUS304 stainless barrel to resist moisture in damp logistics environments.
Is the Airtac MFC Cushioned Stainless Steel Mini Cylinder MFC20X40U the Right Cylinder?
If 157 N of push at 0.5 MPa is insufficient, step up to the MFC25, which provides 245.3 N; since 20 mm is the smallest available bore in this series, there is no smaller MFC option to drop down to. Choose this adjustable air cushion model over a fixed bumper when driving heavier loads at high speeds, as the needle allows you to tune the deceleration and protect the workpiece.
Because this is a plain cylinder, the piston will drift and drop if air pressure is lost or the valve is centred—the cushion only decelerates near the stroke end and acts purely as a shock absorber, never a brake. For suspended loads that must hold position, install an external rod lock or a pilot-operated check valve. Furthermore, without the -S magnet option, this unit cannot host position switches.
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 MFC20X40U FAQ
This 20 mm bore cylinder has a 1/8" port and an 8 mm rod. It pushes with 157 N and pulls with 131.9 N at 0.5 MPa. At 0.7 MPa, push is 219.8 N and pull is 184.7 N. The theoretical maximum force is 32 kgf at 1.0 MPa.
No, this specific SKU does not include the -S magnet, so it cannot host CMSG, DMSG, or EMSG switches. You would need the -S variant for sensing. It uses a SUS304 stainless barrel with riveted aluminium covers and a flat-end U back cover.
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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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