
The AirTAC Airtac MI8~12 Stainless Steel Mini Cylinder MI12X120SU is a genuine double acting round-body mini air cylinder with a Ø12mm 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.
Delivering 56.5 N of push force at 0.5 MPa, this double-acting stainless-steel round-body mini cylinder handles precise light-duty actuation. The riveted barrel and Ø6 mm rod shrug off mild corrosion, outlasting painted alternatives in damp production areas. Its 120 mm stroke operates at 30-800 mm/s, relying on fixed TPU bumper pads to soften end-of-travel impacts without offering adjustable cushioning. Because the bore is Ø12, the air port is M5x0.8 and the male rod thread is M6x1.0.
Built to ISO 6432 mounting dimensions, it drops directly into standard mini-cylinder brackets and clevises for easy design integration. The -S suffix indicates a built-in piston magnet, enabling position sensing with CMSG, DMSG or EMSG switches. In practical terms, plan for a safe working load of about 34 N (roughly 60% of the 0.5 MPa rating), which translates to lifting a 2.9 kg part vertically with a 2:1 safety margin.
| Model | Airtac MI8~12 Stainless Steel Mini Cylinder MI12X120SU |
|---|---|
| Series | MI ISO 6432 mini cylinder |
| Bore size | Ø12 mm |
| Stroke | 120 mm |
| Acting type | Double acting |
| Port size | M5×0.8 |
| Rod thread | M6×1.0 |
| 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 250 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 | 57 N | 42 N |
| 0.7 MPa | 79 N | 59 N |
| Max (@1.0 MPa) | 12 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). |
|---|---|
| 12 | 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.
Cycles a lightweight routing blade over 120 mm to separate printed circuit boards, using the 56.5 N push force to cleanly shear connection points.
Swings a small deflector flap on a packaging line, relying on the stainless build to withstand washdown and the U-style 90-degree port for tight manifold clearance.
Pushes tested vials out of a centrifuge carousel, lifting a 2.9 kg tray vertically with a safe 2:1 margin while a DMSG switch confirms ejection.
When sizing this 120 mm stroke model, verify your load against the 56.5 N push and 42.4 N pull figures at 0.5 MPa. If your application requires less force, stepping down to a Ø10 bore provides 39.3 N of push, while upgrading to a Ø16 bore yields 100.5 N for heavier resistance. The U suffix specifies a 90-degree rear cover, orienting the back port for compact inline manifold plumbing on your machine frame. For a 120 mm stroke, ensure your guiding structure prevents side-load rod bending, as long strokes are susceptible to deflection under offset loads. Finally, remember that venting the air causes the piston to drift; these bumpers only decelerate the stroke end rather than locking the rod, so fit an external pilot check valve if you must suspend a load safely.
Quick checklist
This double-acting cylinder uses an M5x0.8 air port. It generates 56.5 N push and 42.4 N pull at 0.5 MPa, increasing to 79.1 N push and 59.4 N pull at 0.7 MPa. The theoretical maximum force is 11.5 kgf at 1.0 MPa.
Yes, the -S suffix means it has a built-in magnet for CMSG, DMSG and EMSG switches. However, it does not hold position if air is lost; the piston drifts, as the fixed TPU bumper pads only decelerate the stroke end rather than acting as a brake.
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