Airtac MI16-20 Stainless Steel Mini Cylinder MI20X320SU
The AirTAC Airtac MI16-20 Stainless Steel Mini Cylinder MI20X320SU is a genuine double acting round-body mini air cylinder with a Ø20mm bore and 320mm 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
- Stroke320 mm
- Port size1/8"
- Acting typeDouble acting
- Rod threadM8×1.25
- CushionFixed TPU bumper pads
About the Airtac MI16-20 Stainless Steel Mini Cylinder MI20X320SU
Generating 157 N of push force at 0.5 MPa, this double-acting stainless-steel round-body mini cylinder handles a 320 mm stroke with ease. The Ø20 mm bore uses a 1/8 inch port and an M8x1.25 male rod thread. Because the piston rod and barrel are stainless, the riveted construction resists mild corrosion better than painted alternatives in damp production areas. Fixed TPU bumper pads absorb the impact at stroke extremes, while the built-in magnet (-S) supports CMSG, DMSG and EMSG position switches.
For practical sizing, plan for roughly 94 N of real work at 0.5 MPa, which translates to lifting an 8 kg part vertically with a 2:1 safety margin. The U-style 90-degree rear cover provides flexible mounting orientation for tight machine frames. Operating pressure spans 0.15-1.0 MPa, and the piston speed ranges from 30-800 mm/s.
Airtac MI16-20 Stainless Steel Mini Cylinder MI20X320SU Technical Specifications
| Model | Airtac MI16-20 Stainless Steel Mini Cylinder MI20X320SU |
|---|---|
| Series | MI ISO 6432 mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 320 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 MI20X320SU
| MI | ISO 6432 round-body mini cylinder (double-acting). |
|---|---|
| 20 | Bore size in mm. |
| ×320 | 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 MI20X320SU Is Used
Package Diverter Gate
Actuates a routing flap on a packaging conveyor to sort 8 kg cartons, utilising the 157 N push force and 320 mm stroke to clear the belt path fully.
Textile Loom Tensioner
Adjusts a yarn tensioning bar in damp textile manufacturing, where the stainless steel barrel prevents mild corrosion and the U cover allows a 90-degree pivot.
Pallet Labelling Arm
Extends a labelling applicator head 320 mm across a pallet load, relying on the CMSG sensor and fixed TPU bumpers to decelerate the head before impact.
Is the Airtac MI16-20 Stainless Steel Mini Cylinder MI20X320SU the Right Cylinder?
When sizing this 320 mm stroke model, compare it against its neighbours: the Ø16 bore yields 100.5 N of push at 0.5 MPa, whereas stepping up to the Ø25 bore provides 245.3 N. If your application requires holding a load vertically during an air loss or valve centre state, remember that this standard cylinder will drift; the TPU bumpers only decelerate the end of travel and act as neither a lock nor a brake. An external rod lock or pilot-operated check valve is required for secure load holding. Furthermore, the 320 mm stroke demands careful alignment to prevent rod bending and premature seal wear from side loads. The integrated magnet allows seamless fitting of CMSG, DMSG or EMSG sensors, and the U back cover simplifies 90-degree pivot mounting.
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 MI20X320SU FAQ
At 0.5 MPa it provides 157 N push and 131.9 N pull. At 0.7 MPa it provides 219.8 N push and 184.7 N pull. The theoretical maximum force is 32 kgf at 1.0 MPa. The air port size is 1/8 inch.
No, a standard MI cylinder will drift if air is lost or the valve is centred. The fixed TPU bumper pads only decelerate the piston near the stroke end; they do not function as a brake. You must add an external rod lock or pilot check valve to hold a suspended load securely.
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