Airtac MFC Cushioned Stainless Steel Mini Cylinder MFC40X20U
The AirTAC Airtac MFC Cushioned Stainless Steel Mini Cylinder MFC40X20U 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 MFC40X20U
Delivering 628.3 N of push force at 0.5 MPa, the AirTAC MFC40X20U is a JIS-standard round-body mini cylinder built for heavy-duty compact actuation. The riveted aluminium covers and SUS304 stainless barrel resist mild corrosion and washdown, while the U-type flat-end rear cover enables direct flush mounting. For the same 40 mm bore and 20 mm stroke, this double-acting body is notably shorter than an ISO 6432 cylinder, saving valuable machine footprint.
A variable air cushion at both ends lets you dial in the needle valve to absorb end-of-stroke shock at high cycling speeds, protecting the load and reducing noise. This specific SKU lacks the -S magnet, so it cannot accept CMSG, DMSG, or EMSG sensors. Based on the 0.5 MPa push rating, it handles a safe working load of about 377 N, lifting roughly 32 kg vertically with a 2:1 safety margin.
Airtac MFC Cushioned Stainless Steel Mini Cylinder MFC40X20U Technical Specifications
| Model | Airtac MFC Cushioned Stainless Steel Mini Cylinder MFC40X20U |
|---|---|
| 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 MFC40X20U
| 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 MFC40X20U Is Used
Short-Stroke Clamping
Ideal for securely gripping heavy metal castings, using the 628.3 N push force to hold parts firmly during machining without exceeding a 20 mm travel.
High-Speed Diverting
Rapidly pushes products across packaging lines at up to 800 mm/s, relying on the adjustable air cushion to silently absorb the impact at the stroke end.
Compact Pressing
Performs light-duty pressing or seating tasks in tight spaces, where the U-type flat-end rear cover mounts flush and the short JIS body saves length.
Is the Airtac MFC Cushioned Stainless Steel Mini Cylinder MFC40X20U the Right Cylinder?
When sizing this 40 mm bore, step down to the MFC32 if your load requires less than 402.2 N at 0.5 MPa, as no larger MFC bore exists for heavier demands. The adjustable air cushion is essential when driving the maximum 128.1 kgf theoretical load at high speeds, preventing harsh impacts across the 20 mm travel. Keep in mind the cushion only decelerates the piston near the stroke end; it is not a brake, so fit an external rod lock or pilot check valve if you need to hold a vertical load on air loss.
This model features a 1/4 inch port and an M14x1.5 male rod thread. Because this base configuration omits the -S magnet, it cannot support magnetic switches; choose an -S variant if you require CMSG, DMSG, or EMSG position sensing. You can mount it 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 MFC40X20U FAQ
This 40 mm bore double-acting cylinder pushes 628.3 N and pulls 527.8 N at 0.5 MPa. At 0.7 MPa it pushes 879.6 N and pulls 738.9 N, with a theoretical maximum of 128.1 kgf at 1.0 MPa. It uses a 1/4 inch air port and operates between 30 and 800 mm/s.
No, this specific SKU does not include the -S magnet, meaning it cannot support CMSG, DMSG, or EMSG switches. You would need the -S variant for position sensing. The SUS304 stainless build resists mild corrosion, and the variable air cushion at both ends helps decelerate loads, though it will not hold a load on air loss.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Request a Quote for Airtac MFC Cushioned Stainless Steel Mini Cylinder MFC40X20U
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.