
The AirTAC Airtac MI8~12 Stainless Steel Mini Cylinder MI8X120SCA is a genuine double acting round-body mini air cylinder with a Ø8mm bore and 120mm 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.
Generating 25.1 N of push force at 0.5 MPa, this double-acting stainless-steel mini cylinder handles precise 120 mm strokes in tight spaces. The Ø8 mm round-body design uses a riveted barrel and rod that shrug off mild corrosion, giving it a real edge over painted alternatives in damp production areas. Its ISO 6432 mounting dimensions let you drop it straight into standard mini-cylinder brackets and clevises.
The built-in piston magnet (-S) supports CMSG, DMSG and EMSG switches for position sensing, while the rear CA pivot cover accommodates articulating loads. Fixed TPU bumper pads absorb stroke-end impacts. Plan for roughly 15 N of actual work at 0.5 MPa, which means it can vertically lift about 1.3 kg with a 2:1 safety margin. Air connects via an M5x0.8 port.
| Model | Airtac MI8~12 Stainless Steel Mini Cylinder MI8X120SCA |
|---|---|
| Series | MI ISO 6432 mini cylinder |
| Bore size | Ø8 mm |
| Stroke | 120 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. |
| ×120 | 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.
Pushes small plastic mouldings out of a tooling cavity using 25.1 N of force, with the CA clevis absorbing slight misalignment during the 120 mm ejection cycle.
The stainless construction survives humid laboratory environments, pivoting a small test-tube guide arm through a 120 mm arc without rusting.
Uses its 1.3 kg vertical lift capacity to raise lightweight electronic components from a feed track, triggering a DMSG sensor via the internal magnet.
As the smallest bore in the MI family, the Ø8 steps up to the Ø12 (56.5 N push @0.5 MPa) if your payload exceeds the 15 N safe working load calculated here. The 120 mm stroke sits well within the 150 mm standard limit for this size, though at full extension the slender Ø4 mm piston rod is vulnerable to side-loading; keep the load guided to prevent rod bending. This SKU includes the -S magnet for sensors and a CA rear clevis for pivot mounting.
Remember that venting the air supply or centering the directional valve will cause the piston to drift; the TPU bumpers only decelerate the end of travel and do not function as a brake. To suspend a load safely mid-stroke, fit an external rod lock or a pilot-operated check valve.
Quick checklist
At 0.5 MPa it provides 25.1 N push and 18.8 N pull. At 0.7 MPa it provides 35.2 N push and 26.4 N pull. The theoretical maximum force is 5.1 kgf at 1.0 MPa. The air port is M5x0.8.
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 lock. For vertical load holding, install an external rod lock or pilot check valve.
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