
The AirTAC Airtac MI8~12 Stainless Steel Mini Cylinder MI8X25CA is a genuine double acting round-body mini air cylinder with a Ø8mm bore and 25mm stroke, M5×0.8 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 25.1 N of push force at 0.5 MPa, this double-acting stainless-steel mini cylinder handles tiny actuation jobs with reliability. The Ø8 mm bore uses an M5x0.8 air port and an M4x0.7 male rod thread, rolling smoothly at 30-800 mm/s. Its stainless barrel and rod naturally shrug off mild moisture, giving it a real edge over painted alternatives in damp or washdown-prone environments.
Built with a compact riveted round body, it features fixed TPU bumper pads to decelerate the stroke end without adjustable cushioning. The CA rear pivot cover allows direct clevis mounting. For practical sizing, plan for roughly 15 N of usable work at 0.5 MPa, which means it can safely lift a 1.3 kg part vertically against gravity.
| Model | Airtac MI8~12 Stainless Steel Mini Cylinder MI8X25CA |
|---|---|
| Series | MI ISO 6432 mini cylinder |
| Bore size | Ø8 mm |
| Stroke | 25 mm |
| Acting type | Double acting |
| Port size | M5×0.8 |
| Rod thread | M4×0.7 |
| 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 150 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 | 25 N | 19 N |
| 0.7 MPa | 35 N | 26 N |
| Max (@1.0 MPa) | 5 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). |
|---|---|
| 8 | Bore size in mm. |
| ×25 | 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.
Drives small pivoting clamps in electronics assembly fixtures, utilizing the 25.1 N push force to secure delicate PCBs without crushing components.
Taps the plunger of a pneumatic fluid dispenser in a laboratory environment, where the stainless body resists chemical moisture and the CA clevis allows angled mounting.
Pushes lightweight plastic moulded parts out of a sub-gram ejection chute, easily handling the 1.3 kg safe vertical lift margin to clear the tooling.
When sizing this actuator, the 25.1 N push force at 0.5 MPa places it at the absolute bottom of the MI range, meaning there is no smaller bore available if your load drops below 15 N of real work. If you need substantially more force, stepping up to the Ø10 bore provides 39.3 N of push at the same pressure. Because this specific SKU lacks the -S magnet, it cannot accept CMSG, DMSG, or EMSG position switches; you must select an -S variant if your application requires electronic stroke confirmation.
The CA back cover provides a pivot mount ideal for articulating mechanisms, complementing standard LB foot and FA flange options. Remember that venting the air supply causes the piston to drift, as the TPU bumpers only soften end-of-stroke impacts and do not function as a locking brake. To suspend a load safely during an air loss event, install an external pilot check valve.
Quick checklist
This double-acting cylinder has an M5x0.8 port and generates 25.1 N push / 18.8 N pull at 0.5 MPa, and 35.2 N push / 26.4 N pull at 0.7 MPa. Its theoretical maximum force is 5.1 kgf at 1.0 MPa.
No, this specific SKU does not include a magnet and cannot accept CMSG, DMSG, or EMSG switches. You must purchase the -S variant of the MI series to enable magnetic position sensing.
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