
The AirTAC Airtac MI25~40 Stainless Steel Mini Cylinder MI25X250SCATC is a genuine double acting round-body mini air cylinder with a Ø25mm bore and 250mm 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.
Generating 245.3 N of push force at 0.5 MPa, this double-acting stainless-steel round-body mini cylinder handles a 250 mm stroke with a Ø10 mm piston rod. The riveted barrel and rod shrug off mild corrosion, making it highly suitable for damp production zones where painted steel quickly degrades. Because the bore is Ø25, it conforms to the ISO 6432 mounting interface, dropping directly into standard mini-cylinder brackets and clevises for straightforward design integration.
Equipped with a built-in magnet (-S), the unit supports CMSG, DMSG and EMSG position switches. It breathes through a 1/8" port and relies on fixed TPU bumper pads to absorb end-of-stroke impact. For practical sizing, plan for roughly 147 N of real work at 0.5 MPa, which means it can safely lift about 12.5 kg vertically against gravity.
| Model | Airtac MI25~40 Stainless Steel Mini Cylinder MI25X250SCATC |
|---|---|
| Series | MI ISO 6432 mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 250 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. |
| ×250 | 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.
Swings a sorting gate on a packaging line using the CA rear pivot, relying on the 245.3 N thrust to push heavy cartons reliably at 0.5 MPa.
Uses the 250 mm stroke to index goods onto a pallet, where the TC trunnion accommodates slight misalignment while the stainless body resists humid warehouse air.
Modulates fabric tension in a damp dye house, leveraging the 206.1 N pull force at 0.5 MPa and the -S magnet to confirm stroke position with a DMSG sensor.
When sizing this 25 mm bore, stepping down to a Ø20 unit drops the 0.5 MPa push force to 157 N, while moving up to a Ø32 bore raises it to 402 N. This model includes a CA pivot back cover and a TC trunnion mounting accessory, providing flexible load articulation for the 250 mm travel. The integrated -S magnet allows solid feedback via CMSG, DMSG or EMSG sensors.
At 250 mm of travel, mind the side-load and rod-bending limits to prevent premature seal wear. Remember that venting the air supply causes the piston to drift freely; the TPU bumpers only decelerate the stroke end rather than locking the rod. To suspend a load safely during an air loss event, install an external rod lock or a pilot-operated check valve.
Quick checklist
At 0.5 MPa it provides 245.3 N push and 206.1 N pull. At 0.7 MPa the push is 343.4 N and pull is 288.5 N. The theoretical maximum force is 50 kgf at 1.0 MPa, and the air port size is 1/8".
No, the piston will drift if air is lost or the valve is centered. The fixed TPU bumper pads only decelerate the stroke end and do not act as a brake. To maintain a vertical position, you must fit an external rod lock or a pilot-operated check valve.
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