Airtac MF32-40 Stainless Steel Mini Cylinder MF40X300SU
The AirTAC Airtac MF32-40 Stainless Steel Mini Cylinder MF40X300SU is a genuine double acting JIS-standard round-body mini air cylinder with a Ø40mm bore and 300mm 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
- Stroke300 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 MF40X300SU
Delivering 628.3 N of push force at 0.5 MPa, this 40 mm bore double-acting actuator handles heavy-duty positioning tasks. For the same 300 mm stroke, the JIS-standard round-body design is physically shorter than a comparable ISO 6432 cylinder, saving valuable mounting length in tight machinery. The SUS304 stainless steel barrel and riveted aluminium covers resist mild corrosion and washdown environments.
The piston relies on a heterogeneous two-way seal that retains an oil film for prolonged lifespan, while fixed TPU bumper pads and a front-cover anti-impact pad soften stroke-end impacts. Plan for roughly 377 N of actual work at 0.5 MPa, which safely lifts about 32 kg vertically with a 2:1 margin. This specific SKU includes a built-in magnet for position sensing and a flat-end U back cover.
Airtac MF32-40 Stainless Steel Mini Cylinder MF40X300SU Technical Specifications
| Model | Airtac MF32-40 Stainless Steel Mini Cylinder MF40X300SU |
|---|---|
| Series | MF JIS mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 300 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 MF40X300SU
| MF | JIS-standard round-body mini cylinder (double-acting). |
|---|---|
| 40 | Bore size in mm. |
| ×300 | 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 MF40X300SU Is Used
Pallet Diverting Gate
Pushes heavy wooden pallets sideways onto secondary packaging lines using the full 628.3 N thrust at 0.5 MPa.
Press-Fit Pin Insertion
Drives dowel pins into thick aluminium housings on an assembly carousel, relying on the flat-end U cover for flush rear mounting.
Vacuum Lifter Elevation
Raises and lowers a heavy suction cup array to lift roughly 32 kg of sheet steel, using the integrated magnet for stroke confirmation.
Is the Airtac MF32-40 Stainless Steel Mini Cylinder MF40X300SU the Right Cylinder?
When sizing this 40 mm bore, stepping down to the MF32 drops the 0.5 MPa push force to 402.2 N, whereas the MF40 represents the largest standard bore available in the series. Because the 300 mm stroke provides substantial leverage, ensure your mounting arrangement—whether LB foot, FA flange, SDB pivot, or TC trunnion—adequately supports the rod against side loads to prevent premature bending.
Air pressure both extends and retracts the rod, but a standard cylinder drifts if air is lost or the valve is centred. The fixed bumpers only decelerate the stroke end and never act as a holding brake; to suspend a vertical load safely, install an external rod lock or a pilot-operated check valve.
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 MF40X300SU FAQ
The 40 mm bore features a 1/4" port and a 16 mm rod with an M14x1.5 male thread. At 0.5 MPa it pushes 628.3 N and pulls 527.8 N. At 0.7 MPa it pushes 879.6 N and pulls 738.9 N. The theoretical maximum force is 128.1 kgf at 1.0 MPa.
Yes to the sensor: the -S suffix means a magnet is built-in, allowing CMSG, DMSG, or EMSG switches to detect position. Regarding deceleration, it uses fixed TPU bumper pads rather than an adjustable air cushion; for variable cushioning at high speeds, look at the MFC variant.
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Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
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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