Airtac MI8~12 Stainless Steel Mini Cylinder MI8X40SCA
The AirTAC Airtac MI8~12 Stainless Steel Mini Cylinder MI8X40SCA is a genuine double acting round-body mini air cylinder with a Ø8mm bore and 40mm 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
- Stroke40 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 MI8X40SCA
Generating 25.1 N of push force at 0.5 MPa, this compact 8 mm bore actuator is built for light-duty automation. The stainless-steel round barrel and Ø4 mm rod shrug off mild corrosion, giving it a real edge over painted alternatives in damp or washdown settings. Its riveted construction keeps the body light, while fixed TPU bumper pads absorb the impact at stroke end. Because the bore is Ø8, it uses the ISO 6432 mounting interface, dropping smoothly into standard mini-cylinder brackets.
The integrated CA pivot clevis on the back cover handles angled rod movements, and the built-in magnet (-S) supports CMSG, DMSG, or EMSG position switches. Operating at 30-800 mm/s on an M5x0.8 port, it yields a practical safe working load of roughly 15 N. For vertical lifts, plan for it to raise about 1.3 kg safely, letting you match real part weights without overloading the piston.
Airtac MI8~12 Stainless Steel Mini Cylinder MI8X40SCA Technical Specifications
| Model | Airtac MI8~12 Stainless Steel Mini Cylinder MI8X40SCA |
|---|---|
| Series | MI ISO 6432 mini cylinder |
| Bore size | Ø8 mm |
| Stroke | 40 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 MI8X40SCA
| MI | ISO 6432 round-body mini cylinder (double-acting). |
|---|---|
| 8 | Bore size in mm. |
| ×40 | 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 MI8X40SCA Is Used
Micro-Dispenser Dosing
Actuates a 1.3 kg fluid valve head vertically to meter precise chemical drops in a compact lab enclosure.
Small Part Diverter
Pushes lightweight plastic caps off a sorting line using a safe 15 N working load without damaging the components.
Pivoted Sample Gate
Uses the CA rear clevis to swing a 40 mm stroke inspection door on a washdown-resistant stainless test fixture.
Is the Airtac MI8~12 Stainless Steel Mini Cylinder MI8X40SCA the Right Cylinder?
When sizing this 8 mm bore actuator, note there is no smaller MI option below it, but stepping up to the Ø12 bore raises the push force to 56.5 N at 0.5 MPa if your 25.1 N output falls short. The 40 mm stroke is well within the 150 mm maximum standard limit, keeping the rod highly stable. If your application requires the rod to stay put during air loss or valve centering, remember the piston will drift; you must add an external rod lock or pilot check valve, as the TPU bumpers only decelerate the stroke end and never lock the load. The CA rear clevis pairs perfectly with pivot mounts, and the -S magnet ensures you can track end-of-stroke positions.
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 MI8X40SCA FAQ
This 8 mm bore cylinder pushes 25.1 N and pulls 18.8 N at 0.5 MPa. At 0.7 MPa, push is 35.2 N and pull is 26.4 N. 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 ready for CMSG, DMSG, or EMSG switches. The CA back cover provides a pivot clevis for articulated mounting. It uses the ISO 6432 mounting interface but relies on fixed TPU bumper pads rather than an adjustable cushion.
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