Airtac MI8~12 Stainless Steel Mini Cylinder MI8X35SU
The AirTAC Airtac MI8~12 Stainless Steel Mini Cylinder MI8X35SU is a genuine double acting round-body mini air cylinder with a Ø8mm bore and 35mm 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
- Stroke35 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 MI8X35SU
Generating 25.1 N of push force at 0.5 MPa, the AirTAC MI8X35SU is a compact double-acting round-body mini cylinder built for tight spaces. Its stainless-steel barrel and piston rod shrug off mild corrosion, giving it a real edge over painted alternatives in damp or washdown-prone environments. The Ø8 mm bore uses an M5x0.8 air port and a 35 mm stroke, making it highly suited to miniature mechanisms.
Because the piston travels just 35 mm, the fixed TPU bumper pads effectively soften the impact at both stroke ends without needing adjustment. This SKU includes a built-in magnet (-S) for direct mounting of CMSG, DMSG or EMSG position switches. For practical sizing, plan for a real work load of about 15 N, which comfortably lifts a 1.3 kg part vertically with a 2:1 safety margin.
Airtac MI8~12 Stainless Steel Mini Cylinder MI8X35SU Technical Specifications
| Model | Airtac MI8~12 Stainless Steel Mini Cylinder MI8X35SU |
|---|---|
| Series | MI ISO 6432 mini cylinder |
| Bore size | Ø8 mm |
| Stroke | 35 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 MI8X35SU
| MI | ISO 6432 round-body mini cylinder (double-acting). |
|---|---|
| 8 | Bore size in mm. |
| ×35 | 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 MI8X35SU Is Used
Micro-Clamp Actuation
Drives small pneumatic clamps in PCB assembly fixtures, using its 25.1 N push force to secure delicate electronic components for soldering.
Lab Sample Diverting
Pivots a 90-degree routing gate via the U cover to sort lightweight vials in automated liquid handling stations.
Small Part Ejection
Pushes miniature plastic mouldings out of a die set, using the 35 mm stroke and DMSG sensor to confirm a clean ejection cycle.
Is the Airtac MI8~12 Stainless Steel Mini Cylinder MI8X35SU the Right Cylinder?
When sizing this 8 mm bore, stepping up to the Ø10 version raises the 0.5 MPa push force to 39.3 N for heavier micro-tasks, while there is no smaller AirTAC MI option below it. The built-in magnet pairs seamlessly with CMSG, DMSG and EMSG sensors for stroke confirmation. The U back cover provides a 90-degree port orientation, which helps route tubing neatly in cramped enclosures.
Remember that a standard double-acting cylinder drifts if air pressure drops or the valve is centred, as the bumpers only decelerate the stroke end rather than locking the rod. To suspend a load safely during an air loss event, fit an external rod lock or a pilot-operated check valve.
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 MI8X35SU FAQ
At 0.5 MPa it provides 25.1 N push and 18.8 N pull. At 0.7 MPa it provides 35.2 N push and 26.4 N pull. The theoretical maximum force is 5.1 kgf at 1.0 MPa. The air port is M5x0.8.
No, the fixed TPU bumper pads only decelerate the piston at the stroke end and do not act as a brake. The rod will drift if air is lost or the valve is centred; use an external rod lock or pilot check valve for position holding.
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