Airtac MFC Cushioned Stainless Steel Mini Cylinder MFC40X20SCA
The AirTAC Airtac MFC Cushioned Stainless Steel Mini Cylinder MFC40X20SCA is a genuine double acting + cushion JIS-standard round-body mini air cylinder with a Ø40mm bore and 20mm stroke, 1/4" 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.
- BoreØ40 mm
- Stroke20 mm
- Port size1/4"
- Acting typeDouble acting + cushion
- Rod threadM14×1.5
- CushionVariable air cushion, both ends
About the Airtac MFC Cushioned Stainless Steel Mini Cylinder MFC40X20SCA
Delivering 628.3 N of push force at 0.5 MPa, this double-acting 40 mm bore mini cylinder tackles heavy loads with precision. The MFC40X20SCA features a variable air cushion at both ends, letting you dial in a needle valve to absorb end-of-stroke shock during high-speed 30-800 mm/s cycles. This riveted SUS304 stainless steel and aluminium round-body design resists mild corrosion and washdown environments.
Thanks to its JIS-standard construction, the overall body is noticeably shorter than an ISO 6432 cylinder for the same 20 mm stroke, saving valuable mounting space. Equipped with a -S piston magnet, it supports CMSG, DMSG and EMSG sensors for position detection. Factoring a 60% safety margin on the 0.5 MPa push force yields a safe working load around 377 N, meaning it can vertically lift about 32 kg with a 2:1 factor.
Airtac MFC Cushioned Stainless Steel Mini Cylinder MFC40X20SCA Technical Specifications
| Model | Airtac MFC Cushioned Stainless Steel Mini Cylinder MFC40X20SCA |
|---|---|
| Series | MFC JIS mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 20 mm |
| Acting type | Double acting + cushion |
| Port size | 1/4" |
| Rod thread | M14×1.5 |
| 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 (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | 739 N |
| Max (@1.0 MPa) | 128 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 MFC40X20SCA
| MFC | JIS-standard round-body mini cylinder (double-acting, variable cushion). |
|---|---|
| 40 | Bore size in mm. |
| ×20 | 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 MFC40X20SCA Is Used
Heavy Stamping Ejector
Ejects dense stamped metal parts from a press bed, using the variable air cushion to silently decelerate the 628.3 N push force before the end of the short 20 mm stroke.
High-Speed Diverter Arm
Swings a heavy diverter gate on a packaging line at speeds up to 800 mm/s, relying on the riveted SUS304 stainless barrel to endure washdown cycles.
Pallet Stopper Block
Halts loaded pallets on a gravity roller conveyor; the adjustable needle bleeds off kinetic energy smoothly instead of slamming the load against a fixed bumper.
Is the Airtac MFC Cushioned Stainless Steel Mini Cylinder MFC40X20SCA the Right Cylinder?
When sizing this 40 mm bore unit, step down to the MFC32 if your application only requires 402.2 N of push force at 0.5 MPa, as 40 mm is the largest available bore in this series. The adjustable air cushion is essential when moving heavy masses at high velocities, preventing damaging impact at the stroke ends. A 1/4" port supplies the air volume needed for the larger bore.
This SKU includes a CA rear pivot cover and a built-in magnet for switch mounting. Remember that the air cushion only decelerates the piston near the stroke end; it does not function as a brake. If your machine loses air pressure, the piston will drift, so fit an external rod lock or pilot-operated check valve for suspended loads.
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 MFC40X20SCA FAQ
This 40 mm bore cylinder has a 1/4" air port and a 16 mm rod with an M14x1.5 male thread. It generates 628.3 N push and 527.8 N pull at 0.5 MPa, increasing to 879.6 N push and 738.9 N pull at 0.7 MPa. The theoretical maximum force is 128.1 kgf at 1.0 MPa.
No, the variable air cushion only decelerates the piston near the end of the stroke and acts purely as a shock absorber, not a brake. If air is lost, the piston will drift downward. You must install an external rod lock or pilot-operated check valve to hold suspended loads safely.
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