
The AirTAC Airtac MI16-20 Stainless Steel Mini Cylinder MI20X5SCM is a genuine double acting round-body mini air cylinder with a Ø20mm bore and 5mm 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 short-stroke clamping and ejecting with precision. The Ø20 mm bore uses a 1/8" port and an M8x1.25 male rod thread. Its stainless barrel and rod resist mild corrosion, making it highly suitable for damp or washdown environments where painted steel degrades. The riveted construction keeps the body compact, while fixed TPU bumper pads absorb the impact at the stroke ends.
Because the 5 mm stroke is so brief, you can plan for a real working load of about 94 N (roughly 60% of the 0.5 MPa rating) to ensure smooth operation against friction. This equates to lifting an 8 kg part vertically with a safe 2:1 margin. The built-in piston magnet (-S) directly supports CMSG, DMSG, and EMSG reed or electronic switches for end-of-stroke confirmation. The CM round rear cover provides a clean back-end profile for tight mounting blocks.
| Model | Airtac MI16-20 Stainless Steel Mini Cylinder MI20X5SCM |
|---|---|
| Series | MI ISO 6432 mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 5 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. |
| ×5 | 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.
Uses the rapid 5 mm stroke to kick small machined aluminium parts out of a CNC fixture, leveraging the 157 N push force to overcome coolant drag.
Secures delicate PCBs during automated soldering with a controlled 94 N safe working load, preventing board warping while holding firmly.
Applies brief, precise downward pressure on a packaging film seal bar, using the CM round end cover to fit neatly into compact sealing jaws.
When sizing this unit, compare it against its neighbours: a Ø16 bore yields 100.5 N of push at 0.5 MPa, while stepping up to a Ø25 bore provides 245.3 N. Choose this Ø20 model when you need approximately 157 N of thrust in a very compact 5 mm stroke. The ISO 6432 mounting interface means it drops directly into standard mini-cylinder brackets and clevises without custom machining. For position feedback, the integrated magnet works seamlessly with standard sensors.
Remember that a standard double-acting cylinder drifts when air pressure is lost or the valve is centred; the TPU bumpers only soften the end-of-stroke impact and do not function as a mechanical brake. If your application requires the rod to hold its place during an air loss event, install an external pilot-operated check valve or a dedicated rod lock. Furthermore, on this extremely short 5 mm stroke, side-load risks are minimal, but ensure the front face alignment is perfectly square to prevent binding.
Quick checklist
This double-acting cylinder features a 1/8" air 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 force of 32 kgf at 1.0 MPa.
Yes, the -S suffix indicates a built-in piston magnet compatible with CMSG, DMSG, and EMSG switches. However, it does not hold loads if air pressure drops; the piston drifts and the fixed TPU bumper pads only decelerate the stroke end, so add an external rod lock for holding.
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