Airtac MI16-20 Stainless Steel Mini Cylinder MI20X500SU
The AirTAC Airtac MI16-20 Stainless Steel Mini Cylinder MI20X500SU is a genuine double acting round-body mini air cylinder with a Ø20mm bore and 500mm 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
- Stroke500 mm
- Port size1/8"
- Acting typeDouble acting
- Rod threadM8×1.25
- CushionFixed TPU bumper pads
About the Airtac MI16-20 Stainless Steel Mini Cylinder MI20X500SU
Delivering 157 N of push force at 0.5 MPa, this double-acting stainless-steel round-body mini cylinder handles long 500 mm linear excursions. The 20 mm bore uses a 1/8" port and an M8x1.25 male rod thread. Its stainless barrel and rod resist mild corrosion, giving it a real edge over painted-steel alternatives in damp or washdown environments. Riveted construction keeps the body compact.
Because the 500 mm stroke is the maximum standard length for this bore, you must account for rod bending under side loads. The built-in magnet (-S) supports CMSG, DMSG and EMSG switches for position sensing, while the U back cover provides a 90-degree port orientation. For real work at 0.5 MPa, plan for roughly 94 N of usable load. This translates to lifting about 8 kg vertically with a 2:1 safety margin.
Airtac MI16-20 Stainless Steel Mini Cylinder MI20X500SU Technical Specifications
| Model | Airtac MI16-20 Stainless Steel Mini Cylinder MI20X500SU |
|---|---|
| Series | MI ISO 6432 mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 500 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 MI20X500SU
| MI | ISO 6432 round-body mini cylinder (double-acting). |
|---|---|
| 20 | Bore size in mm. |
| ×500 | 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 MI20X500SU Is Used
Long-Stroke Diverting
Pushes lightweight packages across a 500 mm conveyor gap using the 157 N thrust class, with the U cover keeping the 1/8" port tucked neatly against the frame.
Vertical Parts Lift
Raises small bins weighing up to 8 kg between conveyor tiers, relying on the stainless rod to resist humidity in ambient storage areas.
Film Roll Feed
Unwinds packaging material over a half-meter travel, using a CMSG sensor on the -S magnet to trigger the pull cycle at the exact extension limit.
Is the Airtac MI16-20 Stainless Steel Mini Cylinder MI20X500SU 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, whereas a 25 mm bore provides 245.3 N. Choose this model when you need the 157 N thrust class across a long 500 mm span. The U rear cover dictates a 90-degree entry for the air supply, so verify your manifold clearance.
With such an extended stroke, mounting alignment is critical to prevent rod seal wear; use an SDB pivot block or TC trunnion rather than rigid flanges if any angularity exists. The fixed TPU bumper pads decelerate the piston at the stroke ends but do not function as an adjustable air cushion. If air pressure drops, this cylinder will drift and cannot hold a suspended load—install a pilot-operated check valve or external rod lock for fail-safe holding.
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 MI20X500SU FAQ
At 0.5 MPa it provides 157 N push and 131.9 N pull. At 0.7 MPa it yields 219.8 N push and 184.7 N pull. The theoretical maximum force is 32 kgf at 1.0 MPa. The air port is 1/8" and the male rod thread is M8x1.25.
No, the fixed TPU bumper pads only decelerate the stroke end and are not an adjustable air cushion. Furthermore, it cannot hold a load if air is lost; the piston will drift. You must add an external rod lock or pilot check valve for vertical load holding.
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