
The AirTAC Airtac MF32-40 Stainless Steel Mini Cylinder MF32X50SU is a genuine double acting JIS-standard round-body mini air cylinder with a Ø32mm bore and 50mm 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 cylinder handles substantial work in a compact footprint. Because the JIS-standard round body is physically shorter than a comparable ISO 6432 unit for the same 50 mm stroke, it fits tighter machinery frames. The SUS304 stainless steel barrel and riveted aluminium covers resist mild corrosion, while the piston's two-way seal retains an oil film for long service life.
The built-in piston magnet (-S) supports CMSG, DMSG, and EMSG switches for position sensing, and the flat-end U back cover mounts flush against bulkheads. Fixed TPU bumper pads soften stroke-end impact. For reliable actuation, 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 MF32X50SU |
|---|---|
| Series | MF JIS mini cylinder |
| Bore size | Ø32 mm |
| Stroke | 50 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. |
| ×50 | 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.
Holds aluminium housings securely during CNC milling operations using the 402.2 N push force at 0.5 MPa.
Extends 50 mm to push medium-weight cardboard cartons off a main sorting line into secondary packing lanes.
Acts as a pneumatic stop for incoming pallets on a roller conveyor, using the flat-end U cover to absorb rear impact.
When sizing this 32 mm bore, stepping down to the MF25 yields 245.3 N at 0.5 MPa, whereas moving up to the MF40 provides 628.3 N. If your process drops air pressure or the valve centres, this cylinder cannot hold its load and the piston will drift; the bumpers only decelerate the end of travel. Secure a suspended load using an external rod lock or a pilot-operated check valve. The 1/4" port and M10x1.25 male rod thread match standard pneumatic manifolds. With a 50 mm stroke, side-load stress on the 12 mm rod is minimal, but ensure front mounting alignment to prevent binding.
Quick checklist
At 0.5 MPa it pushes with 402.2 N and pulls with 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 cylinder uses a 1/4" air port and an M10x1.25 male rod thread.
Yes, the -S suffix indicates a built-in magnet compatible with CMSG, DMSG, and EMSG switches. Structurally, the JIS-standard SUS304 stainless round body with riveted covers is shorter than an ISO 6432 cylinder of the same bore and stroke, saving mounting length. It uses fixed TPU bumper pads rather than an adjustable air cushion.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
Standard models are processed and dispatched in 3-5 business days.
Most inquiries answered within 7-8 hours.
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.