Airtac MI16-20 Stainless Steel Mini Cylinder MI20X5U
The AirTAC Airtac MI16-20 Stainless Steel Mini Cylinder MI20X5U is a genuine double acting round-body mini air cylinder with a Ø20mm bore and 5mm 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
- Stroke5 mm
- Port size1/8"
- Acting typeDouble acting
- Rod threadM8×1.25
- CushionFixed TPU bumper pads
About the Airtac MI16-20 Stainless Steel Mini Cylinder MI20X5U
Delivering 157 N of push force at 0.5 MPa, this double-acting stainless-steel round-body mini cylinder handles brief 5 mm movements with precision. The riveted barrel and rod resist mild corrosion, giving it a real edge over painted alternatives in damp or washdown settings. Fixed TPU bumper pads absorb the impact at the stroke ends, and the U-style back cover directs the port 90 degrees to simplify plumbing in tight spaces.
Because the actual output is 157 N, you can plan for a safe working load of about 94 N of real work at 0.5 MPa. Vertically, that translates to lifting roughly 8 kg with a 2:1 safety margin. The 1/8" port feeds the 8 mm rod, and its ISO 6432 mounting dimensions mean it drops directly into standard mini-cylinder brackets. Note that this specific SKU lacks a magnet, so it cannot accept CMSG, DMSG or EMSG position switches without upgrading to an -S variant.
Airtac MI16-20 Stainless Steel Mini Cylinder MI20X5U Technical Specifications
| Model | Airtac MI16-20 Stainless Steel Mini Cylinder MI20X5U |
|---|---|
| Series | MI ISO 6432 mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 5 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 MI20X5U
| MI | ISO 6432 round-body mini cylinder (double-acting). |
|---|---|
| 20 | Bore size in mm. |
| ×5 | 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 MI20X5U Is Used
Short-Stroke Part Clamping
Uses the 157 N push force to secure aluminium billets in a CNC milling fixture, relying on the 5 mm stroke for rapid, repeatable grip without over-travel.
Film Seal Jaw Actuation
Drives the upper sealing jaw on a vertical form-fill-seal machine, where the stainless build withstands daily washdown and the U cover keeps air lines compact.
Electronic Component Ejection
Kicks small PCBs out of an SMT pick-and-place routing station with a quick 5 mm tap, safely moving parts weighing under 8 kg.
Is the Airtac MI16-20 Stainless Steel Mini Cylinder MI20X5U the Right Cylinder?
When sizing this 20 mm bore, stepping down to a 16 mm bore drops the push force to 100.5 N, while moving up to a 25 mm bore increases it to 245.3 N at 0.5 MPa. This 5 mm stroke is extremely short, which practically eliminates rod-bending side-load concerns, but you must still account for load holding. A plain cylinder drifts when air is lost or the valve is centred, as the TPU pads only decelerate the stroke end rather than locking the piston. To suspend a load safely, fit an external rod lock or a pilot-operated check valve. The U rear cover provides a 90-degree port orientation, and you can pair the body with LB foot, FA flange, SDB pivot or TC trunnion mounts.
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 MI20X5U FAQ
At 0.5 MPa it provides 157 N push and 131.9 N pull. At 0.7 MPa it provides 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, this specific SKU does not have a magnet, so it cannot accept CMSG, DMSG or EMSG switches. You must select an MI20X5U-S variant to enable magnetic sensing. The body uses ISO 6432 mounting dimensions and features fixed TPU bumper pads rather than an adjustable air cushion.
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