Airtac MI16-20 Stainless Steel Mini Cylinder MI20X185SU
The AirTAC Airtac MI16-20 Stainless Steel Mini Cylinder MI20X185SU is a genuine double acting round-body mini air cylinder with a Ø20mm bore and 185mm 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
- Stroke185 mm
- Port size1/8"
- Acting typeDouble acting
- Rod threadM8×1.25
- CushionFixed TPU bumper pads
About the Airtac MI16-20 Stainless Steel Mini Cylinder MI20X185SU
Delivering 157 N of push force at 0.5 MPa, this double-acting stainless-steel mini cylinder handles a 185 mm stroke with ease. The riveted round-body construction pairs a corrosion-resistant barrel and rod with fixed TPU bumper pads that absorb end-of-stroke impacts without requiring manual adjustment. Because it carries the -S suffix, a built-in piston magnet enables direct mounting of CMSG, DMSG or EMSG reed and electronic sensors for position feedback. Its 1/8" port feeds the 8 mm rod to cycle between 30 and 800 mm/s.
The Ø20 bore conforms to ISO 6432 mounting dimensions, so it drops directly into standard mini-cylinder brackets and clevises for straightforward machine integration. In practical terms, plan for roughly 94 N of usable work at 0.5 MPa, which translates to lifting an 8 kg part vertically with a sensible 2:1 safety margin. The rear U cover provides a 90-degree port and pivot orientation, making plumbing easier in tight spaces.
Airtac MI16-20 Stainless Steel Mini Cylinder MI20X185SU Technical Specifications
| Model | Airtac MI16-20 Stainless Steel Mini Cylinder MI20X185SU |
|---|---|
| Series | MI ISO 6432 mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 185 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 MI20X185SU
| MI | ISO 6432 round-body mini cylinder (double-acting). |
|---|---|
| 20 | Bore size in mm. |
| ×185 | 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 MI20X185SU Is Used
Package Divert Gate
Actuates a routing flap on a packaging conveyor, using the 157 N thrust to push cardboard cartons onto a secondary belt at speed.
Parts Ejector
Pushes machined aluminium components out of a fixture on a CNC lathe, relying on the 185 mm stroke to clear the work area completely.
Tote Stack Stopper
Extends to halt plastic totes on a gravity roller conveyor, where the stainless build withstands damp ambient conditions and washdown.
Is the Airtac MI16-20 Stainless Steel Mini Cylinder MI20X185SU the Right Cylinder?
When sizing this actuator, the Ø16 bore offers a lighter 100.5 N push at 0.5 MPa, while stepping up to the Ø25 yields 245.3 N if your payload exceeds the 8 kg vertical lift target. The 185 mm stroke is well within the 500 mm maximum for this bore, but at this extension you should carefully manage side loading to avoid bending the 8 mm rod. The U back cover suits right-angle installations, and you can select LB foot, FA flange or TC trunnion brackets to match your frame.
Remember that the fixed TPU bumpers only decelerate the piston near the stroke end; they do not act as a brake. If air pressure drops or the valve is centred, the rod will drift and drop the load. To secure a suspended weight, add an external rod lock or a pilot-operated check valve to the 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 MI20X185SU FAQ
This 20 mm bore cylinder features a 1/8" port. 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.
Yes, the -S suffix denotes a built-in magnet compatible with CMSG, DMSG and EMSG switches. The U back cover provides a 90-degree orientation for port and pivot mounting, and the body uses standard ISO 6432 dimensions for easy bracket matching.
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