Airtac MFC Cushioned Stainless Steel Mini Cylinder MFC40X20CM
The AirTAC Airtac MFC Cushioned Stainless Steel Mini Cylinder MFC40X20CM 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 MFC40X20CM
Delivering 628.3 N of push force at 0.5 MPa, this double-acting 40 mm bore mini cylinder is built for rapid actuation. The MFC40X20CM features a variable air cushion at both ends, letting you dial in a needle valve to absorb high-speed end-of-stroke shock, protecting your payload and cutting noise. Its JIS-standard round-body construction pairs a SUS304 stainless steel barrel with riveted aluminium covers to resist mild corrosion and washdown environments.
For the same bore and stroke, this riveted design is noticeably shorter than an ISO 6432 cylinder, saving valuable mounting length. It carries a CM round-end rear cover and uses a 1/4" port. Based on the 0.5 MPa push rating, it handles a safe working load of roughly 377 N, meaning it lifts about 32 kg vertically with a 2:1 safety margin. Note this specific SKU lacks a magnet, so it cannot host CMSG, DMSG or EMSG sensors without switching to the -S variant.
Airtac MFC Cushioned Stainless Steel Mini Cylinder MFC40X20CM Technical Specifications
| Model | Airtac MFC Cushioned Stainless Steel Mini Cylinder MFC40X20CM |
|---|---|
| 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 MFC40X20CM
| 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 MFC40X20CM Is Used
Short-Stroke Pressing
Applies the 628.3 N push force to seat small bearings or snap fasteners, using the variable cushion to prevent impact damage on the 20 mm stroke.
High-Speed Diverter
Rapidly routes heavier packages on a line; the needle-set air cushion silently decelerates the 40 mm piston at the stroke ends to reduce mechanical wear.
Vertical Load Lowering
Safely lowers a 32 kg payload with a 2:1 margin, relying on the adjustable cushion to bring the mass to a smooth stop without a harsh jolt.
Is the Airtac MFC Cushioned Stainless Steel Mini Cylinder MFC40X20CM the Right Cylinder?
When sizing this 40 mm bore, step down to the MFC32 if your task only needs 402.2 N of push at 0.5 MPa, as no larger MFC bore exists for heavier demands. The adjustable air cushion is essential when cycling at high speeds or moving substantial mass, preventing harsh impacts at the 20 mm stroke ends. Remember that the cushion only decelerates the piston near the end of travel; it does not function as a lock or brake. If your application must hold a load vertically during air loss, install an external rod lock or pilot-operated check valve.
Mounting flexibility is extensive despite the compact body, supporting LB foot, FA flange, SDB pivot-block and TC trunnion brackets. Because this exact model has no internal magnet, position sensing is impossible here—order the -S version if you require CMSG, DMSG or EMSG 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 MFC40X20CM FAQ
This 40 mm bore cylinder features a 1/4" port and a 16 mm piston 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, this specific SKU does not include an internal magnet, so it cannot accept CMSG, DMSG or EMSG switches. You would need the -S variant for sensing. The SUS304 stainless build resists mild corrosion, and while the variable air cushion decelerates the piston at stroke ends, it is not a brake and will not hold the load if air pressure is lost.
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