
The AirTAC Airtac MI25~40 Stainless Steel Mini Cylinder MI32X90SCM is a genuine double acting round-body mini air cylinder with a Ø32mm bore and 90mm 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, this AirTAC MI32X90SCM is a robust double-acting round-body mini cylinder built for demanding automation. The stainless-steel barrel and Ø12 mm piston rod shrug off mild corrosion, making it highly suitable for damp environments or washdown zones where painted steel alternatives quickly degrade. Riveted construction keeps the body compact, while fixed TPU bumper pads absorb the impact at the stroke extremes to protect your tooling.
Equipped with a built-in piston magnet (-S), this unit directly supports CMSG, DMSG, and EMSG electronic or reed switches for precise end-of-stroke detection. The CM round rear cover provides a clean, axial profile for straightforward mounting. For practical sizing, plan for a safe working load of roughly 241 N, which equates to lifting about 20.5 kg vertically with a sensible 2:1 safety margin. Air connects via a 1/8" port, and the unit operates smoothly across a 30-800 mm/s speed range.
| Model | Airtac MI25~40 Stainless Steel Mini Cylinder MI32X90SCM |
|---|---|
| Series | MI mini cylinder |
| Bore size | Ø32 mm |
| Stroke | 90 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. |
| ×90 | 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.
Routes plastic containers on a washdown packaging line, using the 402.2 N thrust to push products cleanly between parallel conveyor belts without stalling.
Regulates fabric tension on a weaving machine, where the stainless-steel rod resists humid operating conditions and the CM cover allows tight axial mounting.
Actuates a heavy-duty deflector gate to separate metal brackets by size, relying on the -S magnet and a DMSG sensor to confirm each 90 mm sorting stroke.
When sizing this 32 mm bore, compare your actual load against its 402.2 N push capacity at 0.5 MPa. If your application requires less force, the smaller Ø25 bore generates 245.3 N; if you need substantially more power, stepping up to the Ø40 bore yields 628.3 N. This 90 mm stroke falls well within the 500 mm maximum standard limit, keeping the rod bending risk low even without a guide. Remember that a standard double-acting cylinder like this relies entirely on continuous air pressure to maintain its position. If air is lost or the directional valve is centred, the piston will drift, as the TPU bumpers only soften the end-of-stroke impact rather than locking the rod. To suspend a load safely during an outage, integrate an external pilot-operated check valve or a dedicated rod lock.
Quick checklist
This 32 mm bore cylinder features 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.
No, the piston will drift if air pressure is lost or the valve is centred. The fixed TPU bumper pads only decelerate the rod near the stroke end; they do not function as a brake. For vertical load holding, you must install an external pilot-operated check valve or a mechanical rod lock.
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