Airtac MI16-20 Stainless Steel Mini Cylinder MI20X135SU
The AirTAC Airtac MI16-20 Stainless Steel Mini Cylinder MI20X135SU is a genuine double acting round-body mini air cylinder with a Ø20mm bore and 135mm 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
- Stroke135 mm
- Port size1/8"
- Acting typeDouble acting
- Rod threadM8×1.25
- CushionFixed TPU bumper pads
About the Airtac MI16-20 Stainless Steel Mini Cylinder MI20X135SU
Delivering 157 N of push force at 0.5 MPa, this double-acting stainless-steel round-body mini cylinder handles demanding 20 mm bore tasks. The 135 mm stroke operates via a 1/8" port, driving an 8 mm rod with an M8x1.25 male thread. Its stainless barrel and rod resist mild corrosion, giving it a real edge over painted alternatives in damp or washdown settings. Riveted construction keeps the body compact.
Built to ISO 6432 mounting dimensions, it drops directly into standard mini-cylinder brackets and clevises. The U back cover provides a 90-degree port orientation for tight layouts. Plan for roughly 94 N of actual work at 0.5 MPa, which means it lifts about 8 kg vertically with a 2:1 safety margin. The integrated piston magnet (-S) supports CMSG, DMSG and EMSG switches for position sensing.
Airtac MI16-20 Stainless Steel Mini Cylinder MI20X135SU Technical Specifications
| Model | Airtac MI16-20 Stainless Steel Mini Cylinder MI20X135SU |
|---|---|
| Series | MI ISO 6432 mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 135 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 MI20X135SU
| MI | ISO 6432 round-body mini cylinder (double-acting). |
|---|---|
| 20 | Bore size in mm. |
| ×135 | 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 MI20X135SU Is Used
Diverter Gate Actuation
Pushes lightweight sorting flaps on packaging lines using its 157 N thrust, with the U cover fitting neatly into tight 90-degree transfer chassis.
Lab Sample Ejection
Ejects wet test tubes from centrifuge carousels where the stainless rod shrugs off mild chemical splashes and the 135 mm stroke clears the rotor safely.
Carton Flap Folding
Folds small cardboard flaps prior to taping, lifting about 8 kg of vertical resistance smoothly via its magnet-equipped piston for DMSG sensor tracking.
Is the Airtac MI16-20 Stainless Steel Mini Cylinder MI20X135SU the Right Cylinder?
When sizing this 20 mm bore, compare it directly with its neighbours: a 16 mm bore yields 100.5 N push at 0.5 MPa, while stepping up to 25 mm provides 245.3 N. This 135 mm stroke sits well within the 500 mm maximum, but at this length watch for side-load and rod-bending forces to prevent premature seal wear. The fixed TPU bumper pads decelerate the stroke end but do not function as an adjustable air cushion.
Because it is a double-acting actuator, the piston will drift if air pressure drops or the valve is centred. The bumpers soften impact but act as neither a lock nor a brake. To suspend a load safely during an air loss event, install an external rod lock or a pilot-operated check valve. The U rear cover and ISO 6432 footprint simplify matching your mounting hardware.
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 MI20X135SU FAQ
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. Air is supplied through a 1/8" port driving an 8 mm rod.
No, the piston drifts on air loss and the fixed TPU bumpers only decelerate the stroke end without locking. Use an external rod lock or pilot check valve to hold loads. Because it has the -S magnet, it supports CMSG, DMSG and EMSG switches.
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