
The AirTAC Airtac MI16-20 Stainless Steel Mini Cylinder MI20X80SR is a genuine double acting round-body mini air cylinder with a Ø20mm bore and 80mm 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 an 80 mm stroke with a Ø8 mm piston rod. The riveted stainless barrel and rod naturally resist mild corrosion, giving it a real edge over painted alternatives in damp or washdown zones. Because the bore is Ø20, it conforms to ISO 6432 mounting dimensions, dropping directly into standard mini-cylinder brackets and clevises for easy design swaps. The rear R cover features an axial-in port orientation, keeping plumbing neatly in line with the body.
For practical sizing, plan for about 94 N of real work at 0.5 MPa, which safely lifts an 8 kg part vertically with a 2:1 margin. Fixed TPU bumper pads absorb the impact at stroke end to protect the mechanism. Since this SKU includes the -S magnet, it is fully ready for CMSG, DMSG or EMSG position switches.
| Model | Airtac MI16-20 Stainless Steel Mini Cylinder MI20X80SR |
|---|---|
| Series | MI ISO 6432 mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 80 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. |
| ×80 | 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 light cartons at 157 N on a washdown packaging line, where the stainless body prevents rust from frequent cleaning.
Extends 80 mm to press labels onto pallets, lifting roughly 8 kg tag applicator heads with a safe 2:1 vertical margin.
Ejects wet test tubes from a carousel using the axial-in R rear port to save space in tight laboratory enclosures.
When sizing this 80 mm stroke actuator, compare it against its neighbours: the smaller Ø16 bore yields 100.5 N of push at 0.5 MPa, while the larger Ø25 bore provides 245.3 N. If your machine loses air or the valve centres, this plain cylinder cannot hold its load and the piston will drift; the bumpers only decelerate the end of travel, so add an external rod lock or pilot check valve for suspended loads. An 80 mm stroke is moderate, but always mount rigidly to prevent rod bending under side loads.
The 1/8" port matches the Ø20 bore specification. You can mount this unit using LB foot, FA flange, SDB pivot or TC trunnion hardware. For higher cycle speeds requiring adjustable air cushioning, consider the MIC variant instead of this fixed-bumper build.
Quick checklist
At 0.5 MPa it provides 157 N push and 131.9 N pull. At 0.7 MPa it yields 219.8 N push and 184.7 N pull. The theoretical maximum force is 32 kgf at 1.0 MPa. The air port is 1/8" and the male rod thread is M8x1.25.
Yes, the -S suffix means a piston magnet is built-in for CMSG, DMSG or EMSG switches. For impact absorption, it uses fixed TPU bumper pads that decelerate the stroke end; it does not have an adjustable air cushion.
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