Airtac MI16-20 Stainless Steel Mini Cylinder MI20X40U
The AirTAC Airtac MI16-20 Stainless Steel Mini Cylinder MI20X40U is a genuine double acting round-body mini air cylinder with a Ø20mm bore and 40mm 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
- Stroke40 mm
- Port size1/8"
- Acting typeDouble acting
- Rod threadM8×1.25
- CushionFixed TPU bumper pads
About the Airtac MI16-20 Stainless Steel Mini Cylinder MI20X40U
Delivering 157 N of push force at 0.5 MPa, this double-acting stainless-steel mini cylinder handles compact automation with ease. The Ø20 mm bore uses a 1/8" port and an M8x1.25 male rod thread. Its riveted round-body construction pairs a stainless barrel and rod to resist mild corrosion, offering a real advantage over painted alternatives in damp or washdown environments. Fixed TPU bumper pads absorb stroke-end impact to protect your mechanism.
For practical sizing, plan for a safe working load of about 94 N, which lets you lift an 8 kg part vertically with a 2:1 safety margin. This specific U variant features a 90-degree rear cover, orienting the supply port perpendicular to the body for tight spatial constraints. Because this SKU lacks the -S magnet, it cannot accept position sensors.
Airtac MI16-20 Stainless Steel Mini Cylinder MI20X40U Technical Specifications
| Model | Airtac MI16-20 Stainless Steel Mini Cylinder MI20X40U |
|---|---|
| Series | MI ISO 6432 mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 40 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 MI20X40U
| MI | ISO 6432 round-body mini cylinder (double-acting). |
|---|---|
| 20 | Bore size in mm. |
| ×40 | 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 MI20X40U Is Used
Package Diverters
Pushes small cartons off a packaging line using 157 N of thrust, relying on the 90-degree U cover to keep the 1/8" port neatly out of the travel path.
Lab Sample Ejectors
Ejects test tube racks from analytical equipment where the stainless steel rod resists mild chemical exposure and daily wipe-downs.
Textile Loom Guides
Tensions and guides thread paths with a fast 40 mm stroke, absorbing end-of-travel shocks via fixed TPU pads to maintain rhythm without bouncing.
Is the Airtac MI16-20 Stainless Steel Mini Cylinder MI20X40U the Right Cylinder?
When sizing this 40 mm stroke actuator, compare it to its neighbours: the smaller Ø16 bore yields 100.5 N of push at 0.5 MPa, while the larger Ø25 provides 245.3 N. If your application demands position feedback, step up to an MI20X40-S model to enable CMSG, DMSG or EMSG magnetic switches. The standard ISO 6432 mounting interface on this Ø20 bore drops directly into conventional mini-cylinder brackets and clevises. Remember that a standard cylinder drifts when air is lost or a valve is centered; the bumper pads only decelerate the stroke end and will not hold a load. Add an external rod lock or pilot check valve if you need to maintain vertical position.
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 MI20X40U FAQ
This double-acting cylinder pushes with 157 N and pulls with 131.9 N at 0.5 MPa. At 0.7 MPa, push is 219.8 N and pull is 184.7 N. The theoretical maximum force is 32 kgf at 1.0 MPa. It features a 1/8" air port and an 8 mm piston rod.
No, this specific SKU does not have a magnet and cannot accept CMSG, DMSG or EMSG switches. You must select the -S variant for position sensing. It uses fixed TPU bumper pads for end-of-stroke deceleration rather than an adjustable air cushion.
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1-Year Warranty
Covers non-human-caused product damage.
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