
The AirTAC Airtac MI16-20 Stainless Steel Mini Cylinder MI20X120SCM is a genuine double acting round-body mini air cylinder with a Ø20mm bore and 120mm 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.
Delivering 157 N of push force at 0.5 MPa, this double-acting stainless-steel round-body mini cylinder handles a 120 mm stroke with ease. The Ø20 mm bore uses a 1/8" port and an M8x1.25 male rod thread. Its riveted stainless barrel and rod resist mild corrosion, outperforming painted alternatives in damp or washdown settings. Fixed TPU bumper pads absorb stroke-end impact, and the built-in magnet supports CMSG, DMSG, and EMSG switches.
For real-world sizing, plan for roughly 94 N of actual work at 0.5 MPa, which safely lifts about 8 kg vertically with a 2:1 margin. The rear CM round end keeps the profile clean for tight spaces. Because it meets ISO 6432 mounting dimensions, this unit drops directly into standard mini-cylinder brackets and clevises without custom hardware.
| Model | Airtac MI16-20 Stainless Steel Mini Cylinder MI20X120SCM |
|---|---|
| Series | MI ISO 6432 mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 120 mm |
| Acting type | Double acting |
| Port size | 1/8" |
| Rod thread | M8×1.25 |
| 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 | 157 N | 132 N |
| 0.7 MPa | 220 N | 185 N |
| Max (@1.0 MPa) | 32 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). |
|---|---|
| 20 | 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 lightweight cardboard cartons on a packaging line using the 157 N push force, with the 120 mm stroke clearing guide rails easily.
Maintains yarn tension in humid textile environments where the stainless steel barrel prevents mild corrosion and rust buildup.
Opens and closes access hoppers on sorting stations, lifting roughly 8 kg lids vertically with a safe 2:1 mechanical margin.
When sizing this 120 mm stroke model, compare it against the smaller Ø16 bore that yields 100.5 N of push at 0.5 MPa, or step up to the Ø25 bore that provides 245.3 N if your payload is heavier. The integrated -S magnet enables position sensing, while the CM round end dictates the rear mounting orientation. For side-load concerns on this 120 mm stroke, ensure proper alignment to avoid rod bending.
Remember that air pressure alone does not secure the piston if supply is lost or the valve is centered; the rod will drift. To prevent movement on a vertical load, install an external rod lock or a pilot-operated check valve. The fixed TPU bumpers only decelerate the stroke end and do not function as a braking mechanism.
Quick checklist
This Ø20 mm bore cylinder features a 1/8" port and an M8x1.25 male rod thread. It generates 157 N push and 131.9 N pull at 0.5 MPa, 219.8 N push and 184.7 N pull at 0.7 MPa, with a theoretical maximum of 32 kgf at 1.0 MPa.
Yes, the -S suffix denotes a built-in piston magnet compatible with CMSG, DMSG, and EMSG reed or electronic switches. For impact absorption, it relies on fixed TPU bumper pads that decelerate the piston at the stroke end; it does not feature an adjustable air cushion.
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