Airtac MFC Cushioned Stainless Steel Mini Cylinder MFC40X15SU
The AirTAC Airtac MFC Cushioned Stainless Steel Mini Cylinder MFC40X15SU is a genuine double acting + cushion JIS-standard round-body mini air cylinder with a Ø40mm bore and 15mm 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
- Stroke15 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 MFC40X15SU
Delivering 628.3 N of push force at 0.5 MPa, this double-acting stainless steel mini cylinder handles heavy loads in tight spaces. The riveted SUS304 barrel and aluminium covers resist mild corrosion and washdown environments. For the same bore and stroke, the JIS-standard body is noticeably shorter than an ISO 6432 cylinder, saving valuable mounting length.
A defining feature is the variable air cushion at both ends, allowing you to turn a needle to soak up high-speed end-of-stroke shock, protecting the payload and cutting noise. The built-in magnet (-S) supports CMSG, DMSG and EMSG switches, while the U flat-end back cover simplifies direct rear mounting. With a 1/4" port and a short 15 mm stroke, it provides a safe working load of about 377 N, lifting roughly 32 kg vertically with a 2:1 margin.
Airtac MFC Cushioned Stainless Steel Mini Cylinder MFC40X15SU Technical Specifications
| Model | Airtac MFC Cushioned Stainless Steel Mini Cylinder MFC40X15SU |
|---|---|
| Series | MFC JIS mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 15 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 MFC40X15SU
| MFC | JIS-standard round-body mini cylinder (double-acting, variable cushion). |
|---|---|
| 40 | Bore size in mm. |
| ×15 | 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 MFC40X15SU Is Used
Short-Stroke Clamping
Ideal for securely gripping heavy metal castings in machining fixtures, using the 628.3 N push force across a rapid 15 mm travel.
High-Speed Diverting
Snaps product lanes across packaging lines at speed, relying on the adjustable air cushion to silently absorb the shock at the 15 mm stroke end.
Compact Pressing
Applies steady downward pressure for component seating or light stamping tasks where the shorter-than-ISO-6432 body length prevents interference.
Is the Airtac MFC Cushioned Stainless Steel Mini Cylinder MFC40X15SU the Right Cylinder?
When sizing this 40 mm bore, step down to the MFC32 if your application only requires 402.2 N of push force at 0.5 MPa, as no larger MFC bore exists for loads exceeding the 628.3 N provided here. The adjustable air cushion is essential for high-speed or heavy moving loads, letting you dial in deceleration to prevent end-stroke impact. Remember that the cushion only decelerates the piston near stroke end and does not act as a lock; if you need to hold a vertical load on air loss, add an external rod lock or pilot-operated check valve. This U-cover variant with an -S magnet pairs seamlessly with CMSG, DMSG or EMSG sensors for position feedback.
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 MFC40X15SU FAQ
This 40 mm bore cylinder features a 1/4" 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, with a theoretical maximum force 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. If air pressure is lost, the piston will drift, so you must fit an external rod lock or pilot check valve to hold a vertical load safely.
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