
The AirTAC Airtac MF32-40 Stainless Steel Mini Cylinder MF32X40SUTC is a genuine double acting JIS-standard round-body mini air cylinder with a Ø32mm bore and 40mm 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.
Generating 402.2 N of push force at 0.5 MPa, this double-acting 32 mm bore mini cylinder features a SUS304 stainless steel barrel with riveted aluminium covers. Because the MF body is shorter than an ISO 6432 cylinder for the same 40 mm stroke, it drops right into tighter fixture layouts. The base is double-acting, driving air to both extend and retract the 12 mm rod.
The riveted rolling-packed structure resists mild corrosion and washdown, while the piston's two-way seal retains an oil film for long life. Fixed TPU bumper pads and a front-cover anti-impact pad soften stroke-end impacts without adjustable cushioning. Plan for roughly 241 N of actual work at 0.5 MPa, which means it lifts about 20.5 kg vertically with a 2:1 safety margin. This SKU includes a piston magnet for position sensing and uses a 1/4" port.
| Model | Airtac MF32-40 Stainless Steel Mini Cylinder MF32X40SUTC |
|---|---|
| Series | MF JIS mini cylinder |
| Bore size | Ø32 mm |
| Stroke | 40 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.
| 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.
| MF | JIS-standard round-body mini cylinder (double-acting). |
|---|---|
| 32 | Bore size in mm. |
| ×40 | 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.
Provides 402.2 N of clamping force at 0.5 MPa to secure aluminium housings during CNC machining operations.
Extends 40 mm to push medium-weight cartons off a main conveyor belt into a secondary packing lane.
Acts as a pneumatic stop gate on roller conveyors, halting loaded pallets up to 20.5 kg before the wrap station.
If 245.3 N from the MF25 is too light and 628.3 N from the MF40 is overkill, this 32 mm bore hits the sweet spot at 402.2 N push. It ships with a U flat-end back cover and a TC trunnion mount, giving you a fixed pivot that handles side loads better than a basic thread. The built-in magnet (-S) supports CMSG, DMSG, or EMSG switches for precise end-of-stroke detection.
Air pressure alone will not hold a load if the valve is centred or supply drops; the piston drifts, as the TPU pads only decelerate the stroke end rather than locking it. For vertical or suspended loads, install an external rod lock or a pilot-operated check valve. At a short 40 mm stroke, rod bending is minimal, but keep the TC trunnion aligned to prevent premature seal wear.
Quick checklist
At 0.5 MPa it pushes 402.2 N and pulls 345.6 N. At 0.7 MPa it pushes 563 N and pulls 483.8 N. The theoretical maximum force is 82 kgf at 1.0 MPa. This 32 mm bore model uses a 1/4" air port.
It is a JIS-standard round-body cylinder that is physically shorter than an ISO 6432 cylinder for the same stroke, saving mounting length. It uses fixed TPU bumper pads to decelerate at stroke ends rather than an adjustable air cushion. The included magnet enables CMSG, DMSG, and EMSG sensors.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
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