
The AirTAC Airtac MF32-40 Stainless Steel Mini Cylinder MF32X500U is a genuine double acting JIS-standard round-body mini air cylinder with a Ø32mm bore and 500mm 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.
Delivering 402.2 N of push force at 0.5 MPa, this double-acting 32 mm bore mini cylinder manages an extended 500 mm reach. Because the JIS-standard round-body design is physically shorter than a comparable ISO 6432 unit for the same stroke, it saves valuable mounting length in tight machinery. The SUS304 stainless barrel and riveted aluminium covers resist mild corrosion, while the internal two-way seal retains an oil film for long service life.
With a 1/4 inch port and an M10x1.25 male rod thread, the unit integrates easily into existing pneumatic setups. Planning for about 241 N of actual work at 0.5 MPa leaves a safe operational margin, which translates to lifting roughly 20.5 kg vertically with a 2:1 safety factor. The stroke end is softened by fixed TPU bumper pads and a front-cover anti-impact pad, though these decelerate rather than lock the load. Note that this specific SKU lacks a magnet, so it cannot support CMSG, DMSG, or EMSG sensors without switching to an -S variant.
| Model | Airtac MF32-40 Stainless Steel Mini Cylinder MF32X500U |
|---|---|
| Series | MF JIS mini cylinder |
| Bore size | Ø32 mm |
| Stroke | 500 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. |
| ×500 | 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.
Uses the 402.2 N thrust to push heavy cardboard cartons from a main packaging conveyor to a secondary taping station.
Lifts approximately 20.5 kg of metal hardware between floor levels using the 500 mm stroke, guided by external rails.
Deploys the full half-meter extension to draw a pressing blanket across wide textile machinery before clamping.
When sizing this 32 mm bore, the smaller MF25 provides 245.3 N at 0.5 MPa, whereas stepping up to the MF40 yields 628.3 N. If your application loses air supply or centres the valve, the piston will drift, as the fixed bumpers only soften the end of travel rather than holding the load. To maintain vertical position, incorporate an external rod lock or a pilot-operated check valve. The U-style flat-end back cover suits direct rear mounting. Because 500 mm is a substantial extension for a 12 mm rod, ensure the front mounting is rigid to prevent rod bending under side loads.
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 unit uses a 1/4 inch air port.
No, this specific SKU does not include the internal magnet required for switches. To use CMSG, DMSG, or EMSG sensors, you must select the -S magnet variant. The JIS-standard SUS304 stainless round-body is also shorter than an ISO 6432 cylinder, which helps save space on long 500 mm strokes.
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