
The AirTAC Airtac MF32-40 Stainless Steel Mini Cylinder MF32X30SU is a genuine double acting JIS-standard round-body mini air cylinder with a Ø32mm bore and 30mm 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, the AirTAC MF32X30SU is a 32 mm bore double-acting JIS-standard round-body mini cylinder. Because its SUS304 stainless barrel and riveted aluminium covers form a shorter physical envelope than a comparable ISO 6432 unit, it slots neatly into tight machinery where every millimetre of mounting length matters. The integrated piston magnet allows direct mounting of CMSG, DMSG, or EMSG switches for position sensing.
The internal piston relies on a heterogeneous two-way seal that retains an oil film for extended lifespan, while fixed TPU bumper pads and a front-cover anti-impact pad absorb stroke-end shock. Plan for a safe working load of roughly 241 N, which represents about sixty percent of the 0.5 MPa push rating. Alternatively, it can vertically lift around 20.5 kg with a 2:1 safety margin, letting you match real part weights accurately.
| Model | Airtac MF32-40 Stainless Steel Mini Cylinder MF32X30SU |
|---|---|
| Series | MF JIS mini cylinder |
| Bore size | Ø32 mm |
| Stroke | 30 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. |
| ×30 | 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.
Ideal for locking aluminium extrusions in a machining fixture, using the 30 mm stroke to rapidly secure parts against a stop.
Pushes small cardboard cartons off a sorting line with 402.2 N of force, fitting neatly into tight transfer gaps.
Presses bearings into housings on an assembly carousel, relying on the built-in magnet to confirm the insertion depth.
When sizing this 32 mm bore, stepping down to an MF25 yields 245.3 N of push at 0.5 MPa, whereas stepping up to an MF40 provides 628.3 N. The MF32X30SU features a 1/4" port, an M10x1.25 male rod thread, and a flat-end U back cover. The short 30 mm stroke keeps rod bending stress minimal, but ensure your guiding structure handles any lateral loads.
Remember that the fixed TPU bumpers only decelerate the piston near the stroke ends and do not function as a braking mechanism. If your fixture must remain suspended during a loss of air supply or when a valve is centred, the rod will drift, meaning you must incorporate an external pilot-operated check valve or a dedicated rod lock.
Quick checklist
The 32 mm bore uses a 1/4" port and an M10x1.25 male rod thread. 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.
It is a JIS-standard round-body cylinder that is physically shorter than an ISO 6432 model of the same bore and stroke, saving mounting length. It uses fixed TPU bumper pads to decelerate the stroke end rather than an adjustable air cushion, and its SUS304 stainless barrel resists mild corrosion.
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