Airtac MF32-40 Stainless Steel Mini Cylinder MF40X230SU
The AirTAC Airtac MF32-40 Stainless Steel Mini Cylinder MF40X230SU is a genuine double acting JIS-standard round-body mini air cylinder with a Ø40mm bore and 230mm 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
- Stroke230 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 MF40X230SU
Delivering 628.3 N of push force at 0.5 MPa, this double-acting AirTAC MF40X230SU mini cylinder handles heavy-duty positioning tasks within a compact footprint. Because the JIS-standard round body is physically shorter than a comparable ISO 6432 unit for the same 40 mm bore and 230 mm stroke, it saves valuable mounting length in tight machinery. The SUS304 stainless steel barrel and riveted aluminium covers resist mild corrosion and washdown, while the piston's two-way seal retains an oil film for extended operational life.
Equipped with a built-in piston magnet (-S), this unit supports CMSG, DMSG, and EMSG reed or electronic switches for precise end-of-stroke detection. It features a 1/4" air port and a male M14x1.5 rod thread. For practical actuation, plan for roughly 377 N of usable work at 0.5 MPa, which translates to safely lifting about 32 kg vertically with a 2:1 safety margin. Fixed TPU bumper pads and a front-cover anti-impact pad soften the stroke-end impact, while the flat-end U back cover suits direct rear mounting.
Airtac MF32-40 Stainless Steel Mini Cylinder MF40X230SU Technical Specifications
| Model | Airtac MF32-40 Stainless Steel Mini Cylinder MF40X230SU |
|---|---|
| Series | MF JIS mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 230 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 MF40X230SU
| MF | JIS-standard round-body mini cylinder (double-acting). |
|---|---|
| 40 | Bore size in mm. |
| ×230 | 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 MF40X230SU Is Used
Pallet Diverting Gate
Actuates a heavy routing flap on a packaging line, using the 628.3 N push force to redirect loaded pallets reliably at high speeds.
Press Die Ejection
Pushes finished stamped components out of a tight press bed, where the shorter JIS body saves critical mounting length and the U flat-end cover mounts flush to the machine frame.
Vertical Carton Lift
Raises 30 kg cardboard cartons between conveyor tiers, relying on the built-in -S magnet and EMSG sensors to confirm the full 230 mm extension.
Is the Airtac MF32-40 Stainless Steel Mini Cylinder MF40X230SU the Right Cylinder?
When sizing this 40 mm bore actuator, verify your force requirements carefully. If your application demands less energy, stepping down to the MF32 series provides 402.2 N of push force at 0.5 MPa; however, 40 mm is the largest available bore in the MF family, so higher loads require parallel cylinders or a different series. The 230 mm stroke is well within the 500 mm standard limit, but at this length you must account for side-loading and rod-bending forces to prevent premature seal wear.
Position holding is a critical consideration: a standard double-acting cylinder drifts when air is lost or the valve is centered, as the fixed TPU bumpers only decelerate the stroke end and act as neither a lock nor a brake. To suspend a vertical load safely during an air failure, integrate an external rod lock or a pilot-operated check valve into your pneumatic circuit.
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 MF40X230SU FAQ
At 0.5 MPa, the push force is 628.3 N and the pull force is 527.8 N. At 0.7 MPa, push is 879.6 N and pull is 738.9 N. The theoretical maximum force is 128.1 kgf at 1.0 MPa. This 40 mm bore cylinder uses a 1/4" air port and an M14x1.5 male rod thread.
No, the piston will drift if air is lost or the valve is centered. The fixed TPU bumper pads only decelerate the rod near the stroke end and do not function as a locking brake. For vertical loads, you must 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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