
The AirTAC Airtac MF32-40 Stainless Steel Mini Cylinder MF32X300SCMLB is a genuine double acting JIS-standard round-body mini air cylinder with a Ø32mm bore and 300mm 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 JIS-standard round-body mini cylinder integrates an LB foot mount and a CM round-end rear cover. The SUS304 stainless barrel and riveted aluminium covers resist mild corrosion and washdown environments, while the two-way piston seal retains an oil film for prolonged operational life. Because the MF body is physically shorter than a comparable ISO 6432 cylinder at the same 300 mm stroke, it provides a tangible packaging advantage in tight machinery.
The 32 mm bore operates on a 1/4" port with a 12 mm rod, and the integrated -S magnet enables CMSG, DMSG, or EMSG switches for position sensing. Fixed TPU bumper pads alongside a front-cover anti-impact pad soften stroke-end impacts without offering adjustable cushioning. Plan for roughly 241 N of actual work at 0.5 MPa, which translates to lifting about 20.5 kg vertically with a 2:1 safety margin.
| Model | Airtac MF32-40 Stainless Steel Mini Cylinder MF32X300SCMLB |
|---|---|
| Series | MF JIS mini cylinder |
| Bore size | Ø32 mm |
| Stroke | 300 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. |
| ×300 | 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.
Actuates a routing flap on a packaging conveyor to sort packed cartons into secondary lanes using its 402.2 N push capacity.
Uses the 300 mm stroke to push accumulated totes off a roller bed onto an adjacent palletizing station.
Secures aluminium extrusions in a machining fixture, taking advantage of the short JIS body length to fit within a compact cell.
When sizing this 32 mm bore, stepping down to the MF25 yields 245.3 N of push force at 0.5 MPa, whereas stepping up to the MF40 provides 628.3 N. This model strikes a balance for medium-duty handling. At 300 mm of stroke, minimize side loads to prevent rod bending and premature seal wear. If the air supply drops or the valve is centred, the piston will drift and drop the load, as the TPU pads only decelerate the end of travel rather than locking the rod; install a pilot-operated check valve or external rod lock to hold a suspended weight.
Quick checklist
This 32 mm bore cylinder features a 1/4" port and generates 402.2 N push / 345.6 N pull at 0.5 MPa, and 563 N push / 483.8 N pull at 0.7 MPa. 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 unit for the same stroke, but it does not conform to the ISO standard. It cannot hold a vertical load on air loss; the fixed TPU bumpers only decelerate the stroke end, so a pilot check valve is required for load holding.
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