Airtac MI16-20 Stainless Steel Mini Cylinder MI20X15SU
The AirTAC Airtac MI16-20 Stainless Steel Mini Cylinder MI20X15SU is a genuine double acting round-body mini air cylinder with a Ø20mm bore and 15mm 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
- Stroke15 mm
- Port size1/8"
- Acting typeDouble acting
- Rod threadM8×1.25
- CushionFixed TPU bumper pads
About the Airtac MI16-20 Stainless Steel Mini Cylinder MI20X15SU
Delivering 157 N of push force at 0.5 MPa, this double-acting stainless-steel round-body mini cylinder handles short 15 mm movements with precision. The riveted barrel and rod shrug off mild corrosion, giving it a real edge over painted alternatives in damp or washdown settings. Because it includes a piston magnet, you can mount CMSG, DMSG or EMSG switches directly for position sensing.
A practical setup plans for about 94 N of real work at 0.5 MPa rather than the absolute maximum, which translates to lifting an 8 kg part vertically with a safe 2:1 margin. The 1/8" port feeds air to both ends, while fixed TPU bumper pads absorb the impact at stroke extremes. Its 90-degree U back cover simplifies perpendicular rear mounting without extra brackets.
Airtac MI16-20 Stainless Steel Mini Cylinder MI20X15SU Technical Specifications
| Model | Airtac MI16-20 Stainless Steel Mini Cylinder MI20X15SU |
|---|---|
| Series | MI ISO 6432 mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 15 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 MI20X15SU
| MI | ISO 6432 round-body mini cylinder (double-acting). |
|---|---|
| 20 | Bore size in mm. |
| ×15 | 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 MI20X15SU Is Used
Clamping Small Housings
Uses its 94 N safe working load to secure aluminium die-cast parts during secondary CNC machining operations.
Flap Folding Mechanism
Executes rapid 15 mm strokes to tuck carton flaps on a high-speed packaging line, relying on the 90-degree U cover for compact side mounting.
Lab Sample Ejection
Pushes prepared specimens out of a testing fixture, where the stainless construction resists humidity and chemical exposure.
Is the Airtac MI16-20 Stainless Steel Mini Cylinder MI20X15SU the Right Cylinder?
Choosing this 20 mm bore balances power and footprint; if your task needs less force, the 16 mm bore provides 100.5 N push at 0.5 MPa, whereas stepping up to the 25 mm bore yields 245.3 N. The extremely short 15 mm stroke minimizes rod bending and side-load risks, making it highly rigid. Since the U cover orients the rear port at 90 degrees, ensure your plumbing has clearance. For position feedback, the internal magnet pairs perfectly with CMSG, DMSG or EMSG sensors.
Remember that air pressure alone does not secure the load; if the valve is centred or air is lost, the piston will drift. The TPU bumpers only decelerate the stroke end and do not act as a brake. To hold a vertical load firmly in place during an air failure, add an external rod lock or a pilot-operated check valve to your circuit.
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 MI20X15SU FAQ
At 0.5 MPa it pushes with 157 N and pulls with 131.9 N. At 0.7 MPa the push is 219.8 N and pull is 184.7 N. The theoretical maximum force is 32 kgf at 1.0 MPa. It uses a 1/8" air port and an M8x1.25 male rod thread.
Yes, the -S suffix means it has a built-in magnet for CMSG, DMSG or EMSG switches. Regarding load holding, the piston will drift if air is lost or the valve is centred; the fixed TPU bumper pads only decelerate the stroke end and do not function as a lock. Use an external rod lock or pilot check valve to hold a load.
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