Airtac MF32-40 Stainless Steel Mini Cylinder MF40X400SCA
The AirTAC Airtac MF32-40 Stainless Steel Mini Cylinder MF40X400SCA is a genuine double acting JIS-standard round-body mini air cylinder with a Ø40mm bore and 400mm 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
- Stroke400 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM14×1.5
- CushionFixed TPU bumper pads
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac MF32-40 Stainless Steel Mini Cylinder MF40X400SCA
Delivering 628.3 N of push force at 0.5 MPa, this double-acting JIS-standard round-body mini cylinder handles long 400 mm strokes with a robust 40 mm bore. The riveted rolling-packed structure joins an SUS304 stainless steel barrel to aluminium covers, resisting mild corrosion and washdown environments. An internal two-way seal retains an oil film for long piston life, while fixed TPU bumper pads and a front-cover anti-impact pad soften stroke-end impacts.
Because the MF body is physically shorter than an ISO 6432 cylinder for the same bore and stroke, it saves valuable mounting length on tight machinery. The built-in magnet (-S) supports CMSG, DMSG, and EMSG position switches. Plan for about 377 N of actual work at 0.5 MPa, which safely lifts roughly 32 kg vertically with a 2:1 margin. Air enters via a 1/4" port, and the CA rear pivot cover accommodates articulated rod-end loads.
Airtac MF32-40 Stainless Steel Mini Cylinder MF40X400SCA Technical Specifications
| Model | Airtac MF32-40 Stainless Steel Mini Cylinder MF40X400SCA |
|---|---|
| Series | MF JIS mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 400 mm |
| Acting type | Double acting |
| 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 | Fixed TPU bumper pads |
| 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 MF32-40 Stainless Steel Mini Cylinder MF40X400SCA
| MF | JIS-standard round-body mini cylinder (double-acting). |
|---|---|
| 40 | Bore size in mm. |
| ×400 | 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 MF32-40 Stainless Steel Mini Cylinder MF40X400SCA Is Used
Pallet Diversion
Uses the CA pivot mount to articulate and push heavy pallets onto a parallel conveyor line, absorbing side-play during the 400 mm stroke.
Vertical Carton Lift
Lifts packaging cartons weighing up to 32 kg between floor levels, relying on the 628.3 N push force at 0.5 MPa for steady elevation.
Washdown Gate Actuation
Opens and closes stainless-steel safety gates in food processing zones, where the SUS304 barrel resists moisture and mild chemical spray.
Is the Airtac MF32-40 Stainless Steel Mini Cylinder MF40X400SCA the Right Cylinder?
When sizing this 40 mm bore, compare it against the smaller MF32, which provides 402.2 N of push at 0.5 MPa. Since 40 mm is the largest available MF bore, exceeding this force requires moving to a different cylinder family. The 16 mm rod and M14x1.5 male thread provide a sturdy interface for a 400 mm extension, though long strokes demand careful alignment to prevent rod bending and premature seal wear.
The -S magnet enables solid-state or reed sensor tracking along the SUS304 barrel. Remember that the fixed TPU bumpers only decelerate the piston near the stroke end; they do not function as a brake. If your application must maintain vertical position during air loss or valve centering, the piston will drift, so add an external pilot check valve or rod lock.
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 MF32-40 Stainless Steel Mini Cylinder MF40X400SCA FAQ
This 40 mm bore cylinder features a 1/4" air port and an M14x1.5 male rod thread. At 0.5 MPa it pushes with 628.3 N and pulls with 527.8 N. At 0.7 MPa the push increases to 879.6 N and the pull to 738.9 N. The theoretical maximum force is 128.1 kgf at 1.0 MPa.
No, the fixed TPU bumper pads only decelerate the piston near the stroke end and act as an impact buffer, not a locking mechanism. If air is lost or the valve is centered, the piston will drift. To hold a vertical load securely, install an external rod lock or a pilot-operated check valve.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
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