Airtac MFC Cushioned Stainless Steel Mini Cylinder MFC40X70SU
The AirTAC Airtac MFC Cushioned Stainless Steel Mini Cylinder MFC40X70SU is a genuine double acting + cushion JIS-standard round-body mini air cylinder with a Ø40mm bore and 70mm 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
- Stroke70 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 MFC40X70SU
Delivering 628.3 N of push force at 0.5 MPa, this double-acting mini cylinder handles heavy loads within a compact JIS-standard footprint. The MFC40X70SU features a 40 mm bore, a 70 mm stroke, and a 1/4" port. For the same bore and stroke, its riveted SUS304 stainless steel and aluminium body is shorter than an ISO 6432 cylinder, saving valuable mounting length.
A variable air cushion at both ends lets you turn a needle to soak up high-speed end-of-stroke shock, protecting the equipment and cutting noise. The built-in magnet (-S) supports CMSG, DMSG, and EMSG switches, while the flat U back cover suits tight rear-clearance installations. Based on the 0.5 MPa push rating, it lifts about 32 kg vertically with a 2:1 safety margin.
Airtac MFC Cushioned Stainless Steel Mini Cylinder MFC40X70SU Technical Specifications
| Model | Airtac MFC Cushioned Stainless Steel Mini Cylinder MFC40X70SU |
|---|---|
| Series | MFC JIS mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 70 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 MFC40X70SU
| MFC | JIS-standard round-body mini cylinder (double-acting, variable cushion). |
|---|---|
| 40 | Bore size in mm. |
| ×70 | 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 MFC40X70SU Is Used
Heavy Package Diversion
Uses the 628.3 N push force to deflect heavy cartons on a high-speed sorting line, relying on the variable air cushion to silently absorb the stroke impact.
Press Ejection
Ejects dense stamped parts from a machine bed, where the compact JIS body saves space and the adjustable cushion protects the tooling from shock.
Pallet Stopper
Halts loaded pallets on a roller conveyor; the 40 mm bore provides the stopping power, while the U flat-end cover fits flush against the frame.
Is the Airtac MFC Cushioned Stainless Steel Mini Cylinder MFC40X70SU the Right Cylinder?
When sizing this 40 mm bore model, step down to the MFC32 if your load requires only 402.2 N 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 masses, preventing harsh impacts at the stroke ends. Note 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 a pilot-operated check valve. Mounting options include LB foot, FA flange, SDB pivot, and 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 MFC40X70SU FAQ
This 40 mm bore cylinder features a 1/4" port and a 16 mm rod. It generates 628.3 N push and 527.8 N pull at 0.5 MPa, 879.6 N push and 738.9 N pull at 0.7 MPa, with a theoretical maximum of 128.1 kgf at 1.0 MPa.
No, the variable air cushion only decelerates the piston near the stroke end and acts purely as a shock absorber, never as a brake. To prevent drifting on air loss, you must fit an external rod lock or pilot check valve. The -S magnet enables CMSG, DMSG, and EMSG sensors for position tracking.
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 MFC40X70SU
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.