
The AirTAC Airtac MF32-40 Stainless Steel Mini Cylinder MF32X35SU is a genuine double acting JIS-standard round-body mini air cylinder with a Ø32mm bore and 35mm 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 MF32X35SU is a double-acting JIS-standard round-body mini cylinder built for tight spaces. Because its riveted rolling-packed structure is physically shorter than an ISO 6432 cylinder of the same bore and stroke, it shrinks the total mounting envelope without sacrificing power. The SUS304 stainless barrel and aluminium covers resist mild corrosion and washdown, while the piston's two-way seal retains an oil film for extended mechanical life.
Equipped with a built-in piston magnet (-S), this unit supports CMSG, DMSG, and EMSG position switches. The fixed TPU bumper pads and front-cover anti-impact pad soften stroke-end impact by decelerating the piston. For real-world tasks at 0.5 MPa, plan for a safe working load of roughly 241 N, which means it can comfortably lift about 20.5 kg vertically with a 2:1 safety margin. It features a 1/4" air port and a U flat-end back cover.
| Model | Airtac MF32-40 Stainless Steel Mini Cylinder MF32X35SU |
|---|---|
| Series | MF JIS mini cylinder |
| Bore size | Ø32 mm |
| Stroke | 35 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. |
| ×35 | 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.
Drives short-stroke clamping arms in CNC machining fixtures, using its 402.2 N thrust to secure aluminium housings during milling.
Folds carton flaps on compact packaging lines where the shorter JIS body length prevents collision with passing conveyor frames.
Ejects moulded plastic parts from small tooling cavities, relying on the CMSG sensor to confirm retraction before the mould closes.
When sizing this 32 mm bore, compare its 402.2 N push at 0.5 MPa against the adjacent options: step down to an MF25 for 245.3 N, or move up to an MF40 if you need 628.3 N. This specific SKU includes the U flat-end rear cover and a piston magnet for sensing. If your mechanism loses air or the valve centres, the piston will drift; these bumpers only soften the end of stroke and act as neither a brake nor a lock. To suspend a load safely, incorporate an external rod lock or a pilot-operated check valve. For this short 35 mm stroke, side-load stress on the 12 mm rod is minimal, but always verify alignment to prevent seal wear.
Quick checklist
This 32 mm bore double-acting cylinder uses a 1/4" air port. It generates 402.2 N push and 345.6 N pull at 0.5 MPa, 563 N push and 483.8 N pull at 0.7 MPa, with a theoretical maximum force of 82 kgf at 1.0 MPa.
It is a JIS-standard round-body cylinder that is physically shorter than an ISO 6432 unit of the same bore and stroke. It uses fixed TPU bumper pads to decelerate the stroke end rather than an adjustable air cushion, and its U flat-end back cover suits direct mounting.
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