Airtac MI16-20 Stainless Steel Mini Cylinder MI20X70U
The AirTAC Airtac MI16-20 Stainless Steel Mini Cylinder MI20X70U is a genuine double acting round-body mini air cylinder with a Ø20mm bore and 70mm 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
- Stroke70 mm
- Port size1/8"
- Acting typeDouble acting
- Rod threadM8×1.25
- CushionFixed TPU bumper pads
About the Airtac MI16-20 Stainless Steel Mini Cylinder MI20X70U
Generating 157 N of push force at 0.5 MPa, this double-acting stainless-steel round-body mini cylinder handles compact automation with ease. The Ø20 mm bore features a 1/8" port and a U-type 90-degree rear cover for straightforward perpendicular mounting. Its stainless barrel and rod resist mild corrosion, making it highly suitable for damp production areas where painted steel quickly degrades. Fixed TPU bumper pads absorb the impact at stroke extremes, quietly decelerating the piston without the complexity of adjustable cushioning.
For practical sizing, plan for a safe working load of roughly 94 N, which is about 60 percent of the 0.5 MPa rating. This translates to lifting an 8 kg part vertically when applying a 2:1 safety margin. Because this specific SKU lacks the -S magnet suffix, it cannot accept CMSG, DMSG, or EMSG position switches. The rolled and riveted construction keeps the envelope light, and the ISO 6432 mounting interface ensures it drops directly into standard mini-cylinder brackets and clevises.
Airtac MI16-20 Stainless Steel Mini Cylinder MI20X70U Technical Specifications
| Model | Airtac MI16-20 Stainless Steel Mini Cylinder MI20X70U |
|---|---|
| Series | MI ISO 6432 mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 70 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 MI20X70U
| MI | ISO 6432 round-body mini cylinder (double-acting). |
|---|---|
| 20 | Bore size in mm. |
| ×70 | 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 MI20X70U Is Used
Package Diverting
Pushes light cartons off a main conveyor belt using 157 N of thrust at 0.5 MPa, with the U-type cover allowing a compact 90-degree pivot mount alongside the track.
Lab Sample Ejection
Ejects processed sample trays from testing equipment where the stainless-steel rod prevents mild corrosion from repeated chemical exposure and washdowns.
Component Clamping
Holds small aluminium die-cast parts steady for a secondary machining operation, safely applying an 8 kg vertical clamping equivalent with a 2:1 safety margin.
Is the Airtac MI16-20 Stainless Steel Mini Cylinder MI20X70U the Right Cylinder?
When sizing this 20 mm bore actuator, compare it against its neighbours: a 16 mm bore provides 100.5 N of push at 0.5 MPa, while stepping up to a 25 mm bore yields 245.3 N. If your application requires position feedback, you must select the -S magnet variant to enable sensing switches. Remember that a standard double-acting cylinder drifts when air pressure is lost or the valve is centred; the TPU bumpers only soften the end-of-stroke impact and will not hold the load. To lock a suspended weight in place, integrate an external rod lock or a pilot-operated check valve into your pneumatic circuit. The 70 mm stroke is well within the 500 mm maximum, keeping rod bending stress minimal even under lateral loads.
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 MI20X70U FAQ
This double-acting cylinder delivers 157 N push and 131.9 N pull at 0.5 MPa, and 219.8 N push with 184.7 N pull at 0.7 MPa. The theoretical maximum force is 32 kgf at 1.0 MPa. It features a 1/8" air port and an 8 mm piston rod with an M8x1.25 male thread.
No, this specific SKU does not include a magnet, so it cannot accept CMSG, DMSG, or EMSG switches. You must order the -S variant for position sensing. It uses the ISO 6432 mounting interface and fixed TPU bumper pads rather than an adjustable air cushion.
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