Airtac MI8~12 Stainless Steel Mini Cylinder MI8X20SU
The AirTAC Airtac MI8~12 Stainless Steel Mini Cylinder MI8X20SU is a genuine double acting round-body mini air cylinder with a Ø8mm bore and 20mm stroke, M5×0.8 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.
- BoreØ8 mm
- Stroke20 mm
- Port sizeM5×0.8
- Acting typeDouble acting
- Rod threadM4×0.7
- CushionFixed TPU bumper pads
About the Airtac MI8~12 Stainless Steel Mini Cylinder MI8X20SU
Generating 25.1 N of push force at 0.5 MPa, this double-acting stainless-steel round-body mini cylinder handles short 20 mm strokes with precision. The riveted barrel and rod shrug off mild corrosion, giving it a real edge over painted alternatives in damp or washdown environments. Because the bore is Ø8, it uses the ISO 6432 mounting interface, dropping directly into standard mini-cylinder brackets and clevises.
The integrated piston magnet (-S) supports CMSG, DMSG and EMSG switches for position sensing, while the U back cover provides a 90-degree port orientation for tight routing. Plan for a safe working load of roughly 15 N, which lets you lift about 1.3 kg vertically with a 2:1 margin. Fixed TPU bumper pads absorb the stroke-end impact, and the M5x0.8 air port keeps the pneumatic footprint minimal.
Airtac MI8~12 Stainless Steel Mini Cylinder MI8X20SU Technical Specifications
| Model | Airtac MI8~12 Stainless Steel Mini Cylinder MI8X20SU |
|---|---|
| Series | MI ISO 6432 mini cylinder |
| Bore size | Ø8 mm |
| Stroke | 20 mm |
| Acting type | Double acting |
| Port size | M5×0.8 |
| Rod thread | M4×0.7 |
| 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 150 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 (Ø8mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 25 N | 19 N |
| 0.7 MPa | 35 N | 26 N |
| Max (@1.0 MPa) | 5 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac MI8~12 Stainless Steel Mini Cylinder MI8X20SU
| MI | ISO 6432 round-body mini cylinder (double-acting). |
|---|---|
| 8 | Bore size in mm. |
| ×20 | 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 MI8~12 Stainless Steel Mini Cylinder MI8X20SU Is Used
Micro-Clamp Actuation
Drives tiny clamping fingers on PCB assembly handlers, using the 25.1 N push force to secure delicate boards without crushing components.
Lab Dispenser Triggering
Taps reagent dispenser valves in automated lab equipment, where the stainless build resists chemical moisture and the 20 mm stroke provides exact dosing.
Small Part Ejection
Pushes lightweight plastic mouldings out of a sub-assembly jig, benefiting from the 90-degree U cover to route the M5x0.8 air line cleanly along the frame.
Is the Airtac MI8~12 Stainless Steel Mini Cylinder MI8X20SU the Right Cylinder?
When sizing this 8 mm bore, stepping up to the Ø10 model increases push force to 39.3 N at 0.5 MPa, whereas Ø8 is the smallest available MI option. The 20 mm stroke is well within the 150 mm standard maximum, so no side-load concerns arise here. If your application must hold a vertical load when air is lost or the valve is centred, this cylinder will drift; you should add an external rod lock or pilot-operated check valve. The U-style rear cover dictates a 90-degree mounting orientation, so verify your spatial envelope.
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 MI8~12 Stainless Steel Mini Cylinder MI8X20SU FAQ
At 0.5 MPa it provides 25.1 N push and 18.8 N pull. At 0.7 MPa it yields 35.2 N push and 26.4 N pull. The theoretical maximum force is 5.1 kgf at 1.0 MPa, and the air port is M5x0.8.
Yes, the -S suffix means it has a piston magnet for CMSG, DMSG or EMSG switches. It does not hold position on air loss; the fixed TPU bumpers only decelerate the stroke end, so use a pilot check valve for load holding.
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