
The AirTAC Airtac MI25~40 Stainless Steel Mini Cylinder MI32X190SU is a genuine double acting round-body mini air cylinder with a Ø32mm bore and 190mm stroke, 1/8" air ports and a stainless-steel barrel and rod for mildly corrosive environments.
Delivering 402.2 N of push force at 0.5 MPa, the AirTAC MI32X190SU is a robust double-acting round-body mini cylinder built for demanding automation. Its stainless-steel barrel and piston rod provide excellent mild corrosion resistance, making the unit highly suitable for damp environments or washdown zones where painted alternatives fail. The 190 mm stroke operates at speeds between 30 and 800 mm/s, fed by a 1/8" port.
This model features a built-in piston magnet (-S) for direct mounting of CMSG, DMSG or EMSG sensors, alongside a 90-degree U back cover for flexible port and pivot orientation. Fixed TPU bumper pads absorb the stroke-end impact. For practical sizing, plan for a safe working load of roughly 241 N, which equates to lifting about 20.5 kg vertically with a 2:1 safety margin.
| Model | Airtac MI25~40 Stainless Steel Mini Cylinder MI32X190SU |
|---|---|
| Series | MI mini cylinder |
| Bore size | Ø32 mm |
| Stroke | 190 mm |
| Acting type | Double acting |
| Port size | 1/8" |
| 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. |
| ×190 | 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 a heavy routing flap on a logistics conveyor, utilizing the 402.2 N push force to redirect cartons reliably at high cycling speeds.
Opens and closes a large-bore fluid control valve on a bottling line, where the stainless construction withstands daily washdowns and chemical cleaning.
Drives a mechanical ejection lever to clear stamped metal parts from a press bed, using the 190 mm stroke to clear the tooling area completely.
Choosing this Ø32 bore makes sense when the 245.3 N push of a Ø25 unit is insufficient, but the 628.3 N output of a Ø40 frame would be excessive. Because this is a plain double-acting cylinder, the piston will drift if air pressure drops or the valve is centred; the TPU pads only decelerate the end of travel and do not function as a brake. To suspend a load safely mid-stroke, integrate an external rod lock or a pilot-operated check valve.
The 190 mm stroke is well within the 500 mm maximum for this bore, though at full extension the Ø12 rod is susceptible to bending if subjected to heavy lateral loads—ensure proper guiding. The 90-degree U rear cover simplifies mounting in tight spaces, while the integrated magnet allows seamless position tracking.
Quick checklist
This double-acting cylinder uses a 1/8" air port and an M10x1.25 male rod thread. It generates 402.2 N push and 345.6 N pull at 0.5 MPa, increasing to 563 N push and 483.8 N pull at 0.7 MPa. The theoretical maximum force is 82 kgf at 1.0 MPa.
Yes, the -S suffix indicates a built-in piston magnet designed for CMSG, DMSG and EMSG switches. This specific SKU includes a 90-degree U back cover, allowing the cylinder to be pivoted or mounted cleanly in compact spaces.
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