Airtac MI16-20 Stainless Steel Mini Cylinder MI20X70SR
The AirTAC Airtac MI16-20 Stainless Steel Mini Cylinder MI20X70SR 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 MI20X70SR
Delivering 157 N of push force at 0.5 MPa, this double-acting stainless-steel round-body mini cylinder handles a 70 mm stroke with a Ø8 mm piston rod. The riveted barrel and rod resist mild corrosion, giving it a real edge over painted alternatives in damp or washdown settings. Its 1/8" port and M8x1.25 male rod thread keep pneumatic and mechanical connections standard.
Because the bore uses ISO 6432 mounting dimensions, it drops directly into standard mini-cylinder brackets and clevises. For practical sizing, plan for about 94 N of real work at 0.5 MPa, which means it lifts roughly 8 kg vertically with a safe 2:1 margin. The built-in magnet (-S) supports CMSG, DMSG and EMSG switches for position sensing.
Airtac MI16-20 Stainless Steel Mini Cylinder MI20X70SR Technical Specifications
| Model | Airtac MI16-20 Stainless Steel Mini Cylinder MI20X70SR |
|---|---|
| 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 MI20X70SR
| 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 MI20X70SR Is Used
Package Diverter Gate
Pushes light cardboard cartons on a packaging line using 157 N of thrust, with the stainless build surviving occasional washdowns.
Small Parts Ejector
Ejects moulded plastic components from a press using the 70 mm stroke, relying on the fixed TPU pads to soften the retraction stop.
Bin Lid Actuator
Opens and closes lightweight access hoppers on material bins, where the R axial port and ISO 6432 dimensions simplify bracket fitting.
Is the Airtac MI16-20 Stainless Steel Mini Cylinder MI20X70SR the Right Cylinder?
When sizing this 20 mm bore, the smaller 16 mm option yields 100.5 N push at 0.5 MPa, while the larger 25 mm bore provides 245.3 N, letting you step up if the load spikes. The R back cover supplies an axial-in port orientation, and you can mount the body via LB foot, FA flange, SDB pivot or TC trunnion hardware. Fixed TPU bumper pads absorb the stroke-end impact.
Remember that a standard double-acting cylinder drifts when air is lost or the valve centres, as the bumpers only decelerate the end of travel rather than locking the rod. To suspend a load securely, fit an external rod lock or a pilot-operated check valve. The 70 mm stroke is well within the 500 mm maximum, keeping rod bending stress low.
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 MI20X70SR FAQ
At 0.5 MPa it pushes 157 N and pulls 131.9 N. At 0.7 MPa it pushes 219.8 N and pulls 184.7 N. The theoretical maximum force is 32 kgf at 1.0 MPa, and the air port is 1/8".
No, the piston drifts if air is lost; the fixed TPU bumpers only decelerate the stroke end, so use an external rod lock or pilot check valve to hold a load. The -S magnet allows CMSG, DMSG and EMSG switches for position sensing.
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