Airtac MI16-20 Stainless Steel Mini Cylinder MI20X400U
The AirTAC Airtac MI16-20 Stainless Steel Mini Cylinder MI20X400U 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 MI20X400U
Delivering 157 N of push force at 0.5 MPa, this double-acting stainless-steel round-body mini cylinder handles long 400 mm travel distances. The riveted barrel and Ø8 mm piston rod resist mild corrosion, making it superior to painted alternatives in damp or washdown settings. It uses the ISO 6432 mounting interface, dropping directly into standard mini-cylinder brackets and clevises.
The U suffix equips the rear cover with a 90-degree pivot joint for articulated rod guidance. Fixed TPU bumper pads absorb the end-of-stroke impact, though they do not act as an adjustable air cushion. Plan for a safe working load of roughly 94 N, which translates to lifting about 8 kg vertically with a 2:1 safety margin.
Airtac MI16-20 Stainless Steel Mini Cylinder MI20X400U Technical Specifications
| Model | Airtac MI16-20 Stainless Steel Mini Cylinder MI20X400U |
|---|---|
| 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 MI20X400U
| 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 MI20X400U Is Used
Diverting Gate Actuation
Pushes a sorting flap on a packaging conveyor over the 400 mm stroke, utilising the 157 N push force to deflect parcels reliably.
Vertical Parts Ejection
Lifts lightweight plastic totes out of a storage rack, safely handling the 8 kg vertical load capacity within the 2:1 safety margin.
Textile Beam Traversing
Uses the U 90-degree rear pivot cover to swing a guide arm across a 400 mm span, benefiting from the stainless build in humid dyeing rooms.
Is the Airtac MI16-20 Stainless Steel Mini Cylinder MI20X400U the Right Cylinder?
When sizing this 20 mm bore, the smaller Ø16 generates 100.5 N push at 0.5 MPa, while the larger Ø25 provides 245.3 N, giving you clear scaling options if 157 N is slightly too much or too little. The 400 mm stroke is well within the 500 mm maximum standard stroke, but at this length side-load friction and rod bending become real risks—ensure rigid front mounting or a guide rail to prevent rod deflection.
Because this SKU lacks the -S magnet, it cannot accept CMSG, DMSG or EMSG position switches. Furthermore, the fixed bumpers only decelerate the stroke end; they will not hold a load if air pressure drops or the valve is centred. For suspended loads, install an external rod lock or a pilot-operated check valve to prevent drifting.
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 MI20X400U FAQ
This 20 mm bore cylinder features a 1/8 inch air port and an M8x1.25 male rod thread. It generates 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, this specific SKU lacks the internal magnet required for sensing. You must order the -S variant to use CMSG, DMSG or EMSG switches. The unit does conform to ISO 6432 mounting dimensions and uses fixed TPU bumper pads rather than an adjustable air cushion.
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