Airtac MI16-20 Stainless Steel Mini Cylinder MI20X18U
The AirTAC Airtac MI16-20 Stainless Steel Mini Cylinder MI20X18U is a genuine double acting round-body mini air cylinder with a Ø20mm bore and 18mm 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
- Stroke18 mm
- Port size1/8"
- Acting typeDouble acting
- Rod threadM8×1.25
- CushionFixed TPU bumper pads
About the Airtac MI16-20 Stainless Steel Mini Cylinder MI20X18U
Generating 157 N of push force at 0.5 MPa, this double-acting stainless-steel round-body mini cylinder handles short 18 mm shifts with authority. The riveted barrel and rod shrug off mild corrosion, giving it a real edge over painted alternatives in damp work areas. Because the stroke is brief, plan for a safe working load of about 94 N, which lets you lift parts weighing roughly 8 kg vertically with a 2:1 safety margin.
It features a 90-degree U back cover and a 1/8" port. Fixed TPU bumper pads absorb the impact at stroke end to protect your mechanism. This specific SKU lacks the internal magnet, so it cannot host CMSG, DMSG or EMSG sensors; choose an -S variant if you require position detection.
Airtac MI16-20 Stainless Steel Mini Cylinder MI20X18U Technical Specifications
| Model | Airtac MI16-20 Stainless Steel Mini Cylinder MI20X18U |
|---|---|
| Series | MI ISO 6432 mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 18 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 MI20X18U
| MI | ISO 6432 round-body mini cylinder (double-acting). |
|---|---|
| 20 | Bore size in mm. |
| ×18 | 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 MI20X18U Is Used
Gate Diverting
Snaps a diverting flap on a packaging sorter with its 18 mm stroke, relying on the 157 N push force to overcome friction.
Clamp Release
Retracts a small holding clamp on an aluminium machining fixture, using the 131.9 N pull at 0.5 MPa to free the part.
Stopper Pin
Extends a short pin to halt lightweight cartons on a conveyor belt, benefiting from the compact stainless build in washdown zones.
Is the Airtac MI16-20 Stainless Steel Mini Cylinder MI20X18U the Right Cylinder?
When sizing this 20 mm bore, compare it against its neighbours: a 16 mm bore yields 100.5 N of push at 0.5 MPa, while stepping up to a 25 mm bore provides 245.3 N. Select this 18 mm stroke model for very tight actuation distances where a longer rod would waste space or invite rod bending. The U-style rear cover allows 90-degree mounting, but remember that a plain cylinder drifts if air pressure drops. For holding a load securely, add an external rod lock or pilot check valve.
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 MI20X18U FAQ
The 20 mm bore provides 157 N push and 131.9 N pull at 0.5 MPa, rising to 219.8 N push and 184.7 N pull at 0.7 MPa, with a theoretical maximum of 32 kgf at 1.0 MPa. The air port is 1/8" and the male rod thread is M8x1.25.
No, this specific SKU does not include a magnet, so CMSG, DMSG or EMSG switches will not function. You must select an -S variant for position sensing. The cylinder uses the ISO 6432 mounting interface and features fixed TPU bumper pads rather than an adjustable cushion.
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