Airtac MI16-20 Stainless Steel Mini Cylinder MI20X400SR
The AirTAC Airtac MI16-20 Stainless Steel Mini Cylinder MI20X400SR is a genuine double acting round-body mini air cylinder with a Ø20mm bore and 400mm 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.
- BoreØ20 mm
- Stroke400 mm
- Port size1/8"
- Acting typeDouble acting
- Rod threadM8×1.25
- CushionFixed TPU bumper pads
About the Airtac MI16-20 Stainless Steel Mini Cylinder MI20X400SR
Delivering 157 N of push force at 0.5 MPa, this double-acting stainless-steel round-body mini cylinder handles a 400 mm stroke with ease. The Ø20 mm bore uses a 1/8 inch port and an M8x1.25 male rod thread. Its stainless barrel and rod resist mild corrosion, giving it a real edge over painted alternatives in damp or washdown settings. The riveted construction keeps the body compact while fixed TPU bumper pads absorb impact at the stroke ends.
For practical sizing, plan for about 94 N of real work at 0.5 MPa, which means it lifts roughly 8 kg vertically with a 2:1 safety margin. The built-in piston magnet (-S) supports CMSG, DMSG and EMSG switches for position detection. An R back cover supplies an axial-in port orientation, and the body conforms to ISO 6432 mounting dimensions for straightforward bracket integration.
Airtac MI16-20 Stainless Steel Mini Cylinder MI20X400SR Technical Specifications
| Model | Airtac MI16-20 Stainless Steel Mini Cylinder MI20X400SR |
|---|---|
| Series | MI ISO 6432 mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 400 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.
Theoretical Output Force (Ø20mm)
| 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.
Model Code: Airtac MI16-20 Stainless Steel Mini Cylinder MI20X400SR
| MI | ISO 6432 round-body mini cylinder (double-acting). |
|---|---|
| 20 | Bore size in mm. |
| ×400 | 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.
Where the Airtac MI16-20 Stainless Steel Mini Cylinder MI20X400SR Is Used
Packaging Line Diverter
Pushes light cartons at 157 N on a washdown packaging line, where the stainless rod shrugs off daily moisture.
Vertical Parts Lift
Raises 8 kg tooling trays through a 400 mm vertical cycle, relying on the axial-in R port to keep hoses tidy.
Lab Sample Ejection
Ejects processed sample trays from a tester, using CMSG sensors on the magnet piston to confirm full extension.
Is the Airtac MI16-20 Stainless Steel Mini Cylinder MI20X400SR the Right Cylinder?
When sizing this unit, the Ø16 bore offers 100.5 N push at 0.5 MPa, while the Ø25 steps up to 245.3 N, giving you clear boundaries if your load shifts. Because the 400 mm stroke is long relative to the bore, mind the rod bending moment and avoid heavy side loads to prevent premature seal wear. The fixed TPU bumpers decelerate the piston but do not act as a brake; if air is lost or the valve centres, the rod drifts, so add an external rod lock or pilot check valve for suspended loads. You can mount it via LB foot, FA flange or TC trunnion, and the -S magnet enables solid state or reed sensing.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT / G)
- ✓ Magnet (-S) for sensors?
- ✓ Back cover (CA/U/R/CM) & mount (LB/FA/SDB/TC)
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Avoid side load on the piston rod.
- check Do not dismantle the riveted front/back covers.
- check Use correct back cover (CA/U/R/CM) & mount (LB/FA/SDB/TC).
- check Installation by qualified personnel per AirTAC docs.
Airtac MI16-20 Stainless Steel Mini Cylinder MI20X400SR FAQ
At 0.5 MPa it pushes 157 N and pulls 131.9 N; at 0.7 MPa it pushes 219.8 N and pulls 184.7 N. The theoretical maximum force is 32 kgf at 1.0 MPa. This Ø20 bore uses a 1/8 inch port.
No, the fixed TPU bumper pads only decelerate the stroke end and are not an adjustable air cushion. The piston drifts if air is lost, so you need an external rod lock or pilot check valve to hold a suspended load.
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