Airtac MI8~12 Stainless Steel Mini Cylinder MI8X90SU
The AirTAC Airtac MI8~12 Stainless Steel Mini Cylinder MI8X90SU is a genuine double acting round-body mini air cylinder with a Ø8mm bore and 90mm 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
- Stroke90 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 MI8X90SU
Generating 25.1 N of push force at 0.5 MPa, this double-acting stainless-steel round-body mini cylinder handles compact automation tasks with ease. The Ø8 mm bore uses an M5x0.8 port and a 4 mm piston rod with an M4x0.7 male thread. Its riveted stainless construction resists mild corrosion, offering a distinct advantage over painted alternatives in damp or washdown environments. The integrated piston magnet allows direct mounting of CMSG, DMSG or EMSG switches for position sensing.
At 0.5 MPa, plan for roughly 15 N of actual work to maintain a safe margin, which equates to lifting about 1.3 kg vertically. The 90 mm stroke operates at speeds between 30-800 mm/s. Fixed TPU bumper pads absorb the impact at stroke extremes, and the rear U cover provides a 90-degree port orientation for tight spatial constraints.
Airtac MI8~12 Stainless Steel Mini Cylinder MI8X90SU Technical Specifications
| Model | Airtac MI8~12 Stainless Steel Mini Cylinder MI8X90SU |
|---|---|
| Series | MI ISO 6432 mini cylinder |
| Bore size | Ø8 mm |
| Stroke | 90 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 MI8X90SU
| MI | ISO 6432 round-body mini cylinder (double-acting). |
|---|---|
| 8 | Bore size in mm. |
| ×90 | 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 MI8X90SU Is Used
Micro-Clamp Actuation
Drives small gripper fingers on PCB assembly handlers, using the 25.1 N output to secure delicate electronic components without crushing them.
Lab Dispenser Positioning
Moves a reagent nozzle precisely in analytical equipment, leveraging the stainless build to withstand humid laboratory conditions and chemical washdowns.
Lightweight Part Ejection
Pushes tiny plastic moulded parts out of a die, safely lifting loads around 1.3 kg vertically during automated ejection cycles.
Is the Airtac MI8~12 Stainless Steel Mini Cylinder MI8X90SU the Right Cylinder?
As the smallest bore in the MI series, there is no smaller option if the 25.1 N push at 0.5 MPa proves insufficient; stepping up to the Ø10 bore raises the push force to 39.3 N. This SKU includes the -S magnet for position sensing and the U back cover for 90-degree mounting. If the application requires the rod to stay put during air loss or valve centering, note that the piston will drift; an external rod lock or pilot-operated check valve is required to hold the load securely.
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 MI8X90SU FAQ
This Ø8 mm bore cylinder features an M5x0.8 port. It generates 25.1 N push and 18.8 N pull at 0.5 MPa, 35.2 N push and 26.4 N pull at 0.7 MPa, with a theoretical maximum force of 5.1 kgf at 1.0 MPa.
No, the piston will drift if air is lost or the valve is centered. The fixed TPU bumper pads only decelerate the stroke end and do not act as a brake. For vertical load holding, you must install an external rod lock or a pilot-operated check valve.
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