The AirTAC Airtac MF Mini Cylinders MF32X125SUFA is a genuine double acting JIS-standard round-body mini air cylinder with a Ø32mm bore and 125mm 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.
With 402 N of push force at 0.5 MPa, the MF32X125SUFA sits in the workhorse middle of AirTAC's MF family - a JIS-standard round-body mini cylinder whose SUS304 stainless barrel and riveted aluminium covers make it shorter than an ISO 6432 cylinder of the same bore and stroke, a real saving inside tight fixtures. The 32 mm bore drives a 12 mm rod through a 125 mm stroke, fed by a 1/4" port (PT thread as standard, G or NPT optional), while the piston's two-way oil-retaining seal holds an oil film in service for long seal life.
This SKU carries the -S piston magnet, so CMSG, DMSG or EMSG switches can track position along the stainless barrel, and it pairs a U flat-end back cover with an FA flange for rigid, square-to-bore mounting. Fixed TPU bumper pads plus the front-cover anti-impact pad soften each stroke end - they decelerate, they are not an adjustable cushion. For sizing, plan on roughly 241 N of usable work at 0.5 MPa (about 60% of the rated push), which corresponds to lifting about 20.5 kg vertically with a 2:1 margin.
| Model | Airtac MF Mini Cylinders MF32X125SUFA |
|---|---|
| Series | MF JIS mini cylinder |
| Bore size | Ø32 mm |
| Stroke | 125 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. |
| ×125 | 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.
The 402 N push at 0.5 MPa swings a diverter gate or nudges cartons off a conveyor without hesitation, and the FA flange keeps the cylinder square to the gate pivot through millions of cycles at 30-800 mm/s.
Working at about 241 N of usable clamp force, the 125 mm stroke reaches deep into a jig to press an aluminium bracket against its locators, while the -S magnet and an EMSG switch confirm the clamp is fully home before the spindle starts.
With roughly 20.5 kg of vertical lift capacity at a 2:1 margin, the cylinder raises a 10 kg tray of vials between an indexing table and a filling head; CMSG switches report both end positions to the PLC.
At 402.2 N push and 345.6 N pull (0.5 MPa), this 32 mm bore comfortably covers jobs the MF25 (245.3 N at 0.5 MPa) handles only marginally, yet sits well below the MF40's 628.3 N - step down if your load needs under about 240 N of real work, step up if you want more push at lower supply pressure. The FA flange anchors the cylinder rigidly, the U flat-end rear cover keeps the blind end compact, and the built-in -S magnet accepts CMSG, DMSG or EMSG switches for end-of-stroke confirmation. Bear in mind the rod drifts whenever air is removed or the valve centres - the bumpers only soften the stroke end, so fit an external rod lock or a pilot-operated check valve wherever the load must stay put.
Quick checklist
At 0.5 MPa it pushes with 402.2 N and pulls with 345.6 N; at 0.7 MPa push rises to 563 N and pull to 483.8 N. The theoretical maximum is 82 kgf at 1.0 MPa. Supply clean air filtered to 40 um between 0.15-1.0 MPa (proof pressure 1.5 MPa), with rod speed anywhere in the 30-800 mm/s band and ambient temperature from -20 to +70 C.
Yes - the -S suffix means a piston magnet is built in, so CMSG, DMSG and EMSG switches (reed or electronic) clip straight onto the SUS304 barrel; a non-S MF cannot take a switch at all. The U flat-end back cover keeps the rear face flush and compact, and because the JIS body is shorter than an ISO 6432 cylinder for the same bore and stroke, the whole flange-mounted assembly needs less depth in the fixture.
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