Airtac MI16-20 Stainless Steel Mini Cylinder MI20X120SU
The AirTAC Airtac MI16-20 Stainless Steel Mini Cylinder MI20X120SU 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.
- BoreØ20 mm
- Stroke120 mm
- Port size1/8"
- Acting typeDouble acting
- Rod threadM8×1.25
- CushionFixed TPU bumper pads
About the Airtac MI16-20 Stainless Steel Mini Cylinder MI20X120SU
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 inch port and an M8x1.25 male rod thread. Its stainless barrel and piston rod resist mild corrosion, giving it a real edge over painted-steel or aluminium minis in damp, food, or outdoor environments. Fixed TPU bumper pads absorb the impact at stroke ends, while the riveted construction keeps the body compact and light.
Because the 157 N rating is theoretical, plan for a safe working load of about 94 N of real work at 0.5 MPa. For vertical lifting, that translates to hoisting roughly 8 kg safely with a 2:1 margin. The built-in magnet (-S) supports CMSG, DMSG, and EMSG position switches, and the U-style back cover provides a 90-degree mounting port orientation for tight spaces.
Airtac MI16-20 Stainless Steel Mini Cylinder MI20X120SU Technical Specifications
| Model | Airtac MI16-20 Stainless Steel Mini Cylinder MI20X120SU |
|---|---|
| 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.
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 MI20X120SU
| 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.
Where the Airtac MI16-20 Stainless Steel Mini Cylinder MI20X120SU Is Used
Package Diverting Gate
Actuates a routing flap on a packaging conveyor, using the 120 mm stroke to push cartons onto a secondary belt with reliable 157 N force.
Small Press Ejection
Ejects lightweight stamped parts from a die bed, where the stainless construction withstands residual cutting fluid and the 94 N safe working load clears the debris.
Vertical Parts Lift
Raises small plastic totes in a pick-and-place station, safely lifting an 8 kg payload vertically thanks to the 2:1 safety margin on the 0.5 MPa thrust.
Is the Airtac MI16-20 Stainless Steel Mini Cylinder MI20X120SU the Right Cylinder?
When sizing this unit, the Ø16 mm bore below offers 100.5 N of push at 0.5 MPa, while the Ø25 mm bore above steps up to 245.3 N, letting you fine-tune the force to your exact payload. The 120 mm stroke is well within the 500 mm maximum standard stroke for this bore, keeping it a readily available size. The ISO 6432 mounting interface means it drops directly into standard mini-cylinder brackets and clevises, simplifying spares and design interchangeability.
Remember that a plain double-acting cylinder drifts when air is lost or the valve is centred, as the fixed TPU pads only decelerate the stroke end rather than locking the rod. If your application requires the load to be held securely in place during an air failure, you should add an external rod lock or a pilot-operated check valve to the system.
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 MI20X120SU FAQ
This Ø20 mm bore cylinder features a 1/8 inch air port and an M8x1.25 male rod thread. The double-acting thrust is 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.
No, the piston will drift if air is lost or the valve is centered, as the fixed TPU bumper pads only decelerate the stroke end and do not act as a brake. To maintain a vertical position during an air failure, you must install an external rod lock or a pilot-operated check valve.
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