
The AirTAC Airtac MI25~40 Stainless Steel Mini Cylinder MI25X370SCM is a genuine double acting round-body mini air cylinder with a Ø25mm bore and 370mm stroke, 1/8" air ports and a stainless-steel barrel and rod for mildly corrosive environments. Its ISO 6432 mounting interface makes it a compact drop-in for standard mini-cylinder fixtures.
Delivering 245.3 N of push force at 0.5 MPa, this double-acting stainless-steel round-body mini cylinder handles substantial work within a compact footprint. The 25 mm bore pairs a 10 mm piston rod with a 1/8" port and M10x1.25 male rod thread. Because the stroke runs 370 mm, plan for roughly 147 N of actual work at 0.5 MPa to maintain a safe margin. This translates to lifting about 12.5 kg vertically, letting you match the actuator directly to real part weights.
The rolled stainless barrel and rod shrug off mild corrosion, giving a distinct advantage over painted alternatives in damp or washdown settings. An integrated piston magnet (-S) supports CMSG, DMSG, and EMSG position switches. Fixed TPU bumper pads absorb stroke-end impact, while the CM round rear cover completes the build. It also conforms to ISO 6432 mounting dimensions, dropping smoothly into standard mini-cylinder brackets and clevises.
| Model | Airtac MI25~40 Stainless Steel Mini Cylinder MI25X370SCM |
|---|---|
| Series | MI ISO 6432 mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 370 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.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 245 N | 206 N |
| 0.7 MPa | 344 N | 289 N |
| Max (@1.0 MPa) | 50 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
| MI | ISO 6432 round-body mini cylinder (double-acting). |
|---|---|
| 25 | Bore size in mm. |
| ×370 | 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.
Flips heavy diverter gates on packaging lines, utilizing the 245.3 N push force to redirect loaded pallets reliably at 0.5 MPa.
Raises test tube racks vertically in climate-controlled chambers, where the stainless build resists humidity and the 370 mm stroke provides ample lift.
Extends mechanical arms to stack plastic totes, lifting components safely under the 12.5 kg vertical working margin.
When sizing this 25 mm bore actuator, compare it against its neighbours: a 20 mm bore yields 157.0 N of push at 0.5 MPa, whereas stepping up to a 32 mm bore provides 402.2 N. The 370 mm stroke is well within the 500 mm maximum standard stroke, but at this length you must account for rod bending under side loads—rigid guidance is essential to prevent premature seal wear. Note that venting air or centering the valve causes the piston to drift; the TPU pads only decelerate the end of travel and will not lock the load. Use an external rod lock or pilot check valve if you need strict position holding. The CM back cover orientation and the -S magnet ensure compatibility with your chosen CMSG, DMSG, or EMSG sensors.
Quick checklist
At 0.5 MPa it provides 245.3 N push and 206.1 N pull. At 0.7 MPa it yields 343.4 N push and 288.5 N pull. The theoretical maximum force is 50 kgf at 1.0 MPa. The air port is 1/8" and the male rod thread is M10x1.25.
Yes, the -S suffix indicates a built-in piston magnet designed for CMSG, DMSG, and EMSG reed or electronic switches. For impact absorption, it relies on fixed TPU bumper pads that decelerate the piston near the stroke end; it does not feature an adjustable air cushion.
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