
The AirTAC Airtac MI8~12 Stainless Steel Mini Cylinder MI12X170SU is a genuine double acting round-body mini air cylinder with a Ø12mm bore and 170mm 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 mini cylinder handles compact linear motion with ease. The riveted round-body construction pairs a corrosion-resistant barrel and Ø6 mm rod with fixed TPU bumper pads that absorb stroke-end impacts. Because it uses the ISO 6432 mounting interface, it drops directly into standard mini-cylinder brackets and clevises. The built-in piston magnet (-S) supports CMSG, DMSG and EMSG switches for position sensing.
At 0.5 MPa, plan for a safe working load of about 34 N, which means this actuator lifts roughly 2.9 kg vertically with a 2:1 safety margin. The 170 mm stroke falls within the 250 mm maximum standard stroke for this bore, while the M5x0.8 port and U-type 90-degree rear cover keep pneumatic plumbing neatly oriented.
| Model | Airtac MI8~12 Stainless Steel Mini Cylinder MI12X170SU |
|---|---|
| Series | MI ISO 6432 mini cylinder |
| Bore size | Ø12 mm |
| Stroke | 170 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. |
| ×170 | 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.
Actuates fine-pitch probe heads onto PCBs, using the 56.5 N thrust to compress contact pins reliably without damaging the board surface.
Pushes lightweight plastic caps or vials across a conveyor belt, where the 170 mm stroke provides sufficient reach to clear adjacent lanes.
Adjusts the position of a dancer arm on a packaging machine, relying on the stainless build to resist humidity in washdown packaging areas.
When sizing this 12 mm bore actuator, compare its 56.5 N push force at 0.5 MPa against the neighbouring 10 mm bore (39.3 N) for lighter tasks, or step up to the 16 mm bore (100.5 N) if your application needs more thrust. The 170 mm stroke provides ample travel but requires attention to side loading; ensure the rod end is guided to prevent bending over the extended length. This SKU includes the -S magnet for CMSG/DMSG/EMSG sensors. If your mechanism must hold a vertical load when air is removed, add an external rod lock or pilot check valve, as the TPU bumpers only decelerate the stroke end and will not brake or hold the piston.
Quick checklist
The 12 mm bore generates a push force of 56.5 N and a pull force of 42.4 N at 0.5 MPa. At 0.7 MPa, push is 79.1 N and pull is 59.4 N. The theoretical maximum force is 11.5 kgf at 1.0 MPa. The air port size is M5x0.8.
No, it features fixed TPU bumper pads that decelerate the piston at the stroke end, not an adjustable air cushion. It also does not hold position if air pressure is lost; the piston will drift. Use an external rod lock or pilot check valve for load holding.
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