
The AirTAC Airtac MI25~40 Stainless Steel Mini Cylinder MI32X125UTC is a genuine double acting round-body mini air cylinder with a Ø32mm bore and 125mm stroke, 1/4" air ports and a stainless-steel barrel and rod for mildly corrosive environments.
Delivering 402.2 N of push force at 0.5 MPa, this double-acting round-body mini cylinder handles heavier automation tasks with ease. The stainless-steel barrel and piston rod resist mild corrosion, making it highly suitable for damp environments or washdown areas where painted steel alternatives fail. Riveted construction keeps the body compact, while fixed TPU bumper pads absorb impact energy at the stroke extremes.
Equipped with a 1/4" port and a 12 mm rod, it operates smoothly between 30 and 800 mm/s. Because this specific SKU lacks the -S magnet suffix, it cannot accept CMSG, DMSG, or EMSG magnetic switches. For position feedback, you would need to specify the -S variant. Plan for a safe working load of roughly 241 N, which allows a comfortable margin over the rated output.
| Model | Airtac MI25~40 Stainless Steel Mini Cylinder MI32X125UTC |
|---|---|
| Series | MI 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 MI/MIC (ISO 6432) datasheet. Barrel & rod: stainless steel (round-body, riveted construction). Thread options: PT (blank) / G. Note: the Ø32 bore is a larger, non-ISO-6432 size.
| 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.
| MI | 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. |
MI-family variants: MI / MIC (double acting ±cushion), MSI / MTI (single acting push / pull), MID / MICD (double rod ±cushion), MIJ / MICJ (adjustable stroke ±cushion). Back covers CA / U / R / CM. Mounting LB / FA / SDB / TC.
Actuates heavy diverting gates on packaging lines, using its 402.2 N thrust to push dense cartons onto secondary conveyors without stalling.
Maintains consistent tension on textile machinery, where the stainless construction withstands humid manufacturing environments and fibre dust.
Functions as a robust pneumatic stopper arm for pallet routing, utilising the TC trunnion mount to accommodate slight angular misalignments.
When sizing this 32 mm bore, compare it against its neighbours: a 25 mm bore provides 245.3 N of push at 0.5 MPa, while stepping up to a 40 mm bore yields 628.3 N. This model includes a U-type 90-degree rear cover and a TC trunnion mount, offering versatile pivot integration for your mechanical layout. The 125 mm stroke is well within the 500 mm maximum standard, keeping the assembly balanced.
Remember that a standard double-acting cylinder drifts when air pressure is lost or the valve is centred. The TPU bumpers only soften the end-of-stroke impact; they do not function as a braking mechanism. If your application requires the load to remain stationary during an air failure, install an external rod lock or a pilot-operated check valve.
Quick checklist
This 32 mm bore cylinder features a 1/4" port and a 12 mm piston rod. It generates 402.2 N push and 345.6 N pull at 0.5 MPa, or 563 N push and 483.8 N pull at 0.7 MPa. The theoretical maximum force is 82 kgf at 1.0 MPa.
No, because this specific SKU does not include the -S magnet suffix, it cannot accept CMSG, DMSG, or EMSG magnetic switches. You must select an -S variant if you require position sensing. It features a U-type 90-degree back cover and a TC trunnion for mounting.
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