Airtac MF32-40 Stainless Steel Mini Cylinder MF32X140SU
The AirTAC Airtac MF32-40 Stainless Steel Mini Cylinder MF32X140SU is a genuine double acting JIS-standard round-body mini air cylinder with a Ø32mm bore and 140mm 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.
- BoreØ32 mm
- Stroke140 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM10×1.25
- 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 MF32X140SU
Delivering 402.2 N of push force at 0.5 MPa, this double-acting 32 mm bore mini cylinder is built around a SUS304 stainless barrel with riveted aluminium covers. The riveted rolling-packed structure shrinks the overall body length compared to an ISO 6432 unit of the same bore and stroke, giving you a tangible packaging advantage in tight machinery. A 1/4 inch port supplies the air, driving a 12 mm rod with an M10x1.25 male thread.
Because the piston relies on a heterogeneous two-way seal that retains an oil film, internal friction stays low over long cycles. Fixed TPU bumper pads and a front-cover anti-impact pad absorb the shock at stroke extremes, though they decelerate rather than act as a lock. Plan for roughly 241 N of actual work at 0.5 MPa to maintain a safe margin, which translates to lifting about 20.5 kg vertically. The -S suffix equips the piston with a magnet for position sensing.
Airtac MF32-40 Stainless Steel Mini Cylinder MF32X140SU Technical Specifications
| Model | Airtac MF32-40 Stainless Steel Mini Cylinder MF32X140SU |
|---|---|
| Series | MF JIS mini cylinder |
| Bore size | Ø32 mm |
| Stroke | 140 mm |
| Acting type | Double acting |
| Port size | 1/4" |
| Rod thread | M10×1.25 |
| 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 (Ø32mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 402 N | 346 N |
| 0.7 MPa | 563 N | 484 N |
| Max (@1.0 MPa) | 82 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 MF32X140SU
| MF | JIS-standard round-body mini cylinder (double-acting). |
|---|---|
| 32 | Bore size in mm. |
| ×140 | 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 MF32X140SU Is Used
Carton Diverter Arm
Swings a routing gate on a packaging line, using the 402.2 N push force to snap 20.5 kg loads smoothly onto an adjacent belt.
Press Pin Insertion
Drives a 12 mm rod down to seat dowel pins in an aluminium jig, relying on the compact JIS body to fit between tight tooling plates.
Pallet Stop Gate
Acts as a pneumatic stop for incoming pallets on a roller conveyor, using the fixed TPU bumper pads to absorb the impact of arriving goods.
Is the Airtac MF32-40 Stainless Steel Mini Cylinder MF32X140SU the Right Cylinder?
When sizing this 32 mm bore, the adjacent MF25 yields 245.3 N at 0.5 MPa, while stepping up to the MF40 provides 628.3 N—choose this model when the 25 mm falls short but you want a smaller footprint than the 40 mm. The U flat-end back cover suits direct rear mounting, and you can pair the internal magnet with CMSG, DMSG or EMSG switches for end-of-stroke confirmation. If your mechanism must hold a vertical load mid-stroke during an air loss event, remember this cylinder will drift; add an external rod lock or a pilot-operated check valve for secure positioning. At a 140 mm stroke, keep the side-load minimal to avoid rod bending and premature seal wear.
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 MF32X140SU FAQ
This 32 mm bore double-acting cylinder uses a 1/4 inch port. It generates 402.2 N push and 345.6 N pull at 0.5 MPa, increasing to 563 N push and 483.8 N pull at 0.7 MPa. The theoretical maximum force is 82 kgf at 1.0 MPa.
It does not conform to ISO 6432, but its JIS-standard round body is physically shorter than an ISO 6432 cylinder for the same stroke, saving mounting length. The U flat-end back cover allows direct mounting. It cannot hold a load if air is lost; you need an external rod lock or pilot check valve for that.
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Covers non-human-caused product damage.
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