
The AirTAC Airtac MI25~40 Stainless Steel Mini Cylinder MI32X80SU is a genuine double acting round-body mini air cylinder with a Ø32mm bore and 80mm 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 double-acting round-body mini cylinder handles demanding 80 mm stroke tasks. The stainless-steel barrel and piston rod provide reliable mild corrosion resistance, outperforming painted alternatives in damp or washdown environments. A built-in piston magnet allows seamless integration with CMSG, DMSG, or EMSG switches for position sensing.
The riveted construction remains compact while housing a 1/8" port and a 90-degree U back cover for flexible routing. Fixed TPU bumper pads absorb stroke-end impact to protect your mechanism. For real-world sizing, plan for roughly 241 N of actual work at 0.5 MPa, which translates to safely lifting about 20.5 kg vertically with a 2:1 margin.
| Model | Airtac MI25~40 Stainless Steel Mini Cylinder MI32X80SU |
|---|---|
| Series | MI mini cylinder |
| Bore size | Ø32 mm |
| Stroke | 80 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. |
| ×80 | 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, using the 402.2 N thrust to push parcels firmly onto secondary sorting lanes.
Secures aluminium extrusions during machining operations, taking advantage of the 80 mm travel and 345.6 N pull force to hold parts steady.
Functions as a robust end-of-line stop for inbound pallets, relying on the stainless build to endure humid dock environments.
When sizing this 32 mm bore, compare it against the 25 mm option (245.3 N push @0.5 MPa) for lighter duties, or step up to the 40 mm bore (628.3 N push @0.5 MPa) if your payload exceeds the 241 N safe working threshold. The 80 mm stroke is well within the 500 mm maximum, keeping the rod stable without significant bending concerns.
Remember that venting the air supply causes the piston to drift, as the fixed TPU bumpers only decelerate the end of travel rather than locking the rod. To prevent a suspended load from dropping, incorporate an external rod lock or a pilot-operated check valve into your pneumatic circuit.
Quick checklist
This 32 mm bore cylinder features a 1/8" port and a 12 mm rod. 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.
Yes, the -S suffix indicates a built-in magnet compatible with CMSG, DMSG, and EMSG switches. The U back cover provides a 90-degree port and mounting orientation, simplifying hose routing in tight machinery spaces.
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