Airtac MI8~12 Stainless Steel Mini Cylinder MI12X40SUTC
The AirTAC Airtac MI8~12 Stainless Steel Mini Cylinder MI12X40SUTC is a genuine double acting round-body mini air cylinder with a Ø12mm 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.
- BoreØ12 mm
- Stroke40 mm
- Port sizeM5×0.8
- Acting typeDouble acting
- Rod threadM6×1.0
- CushionFixed TPU bumper pads
About the Airtac MI8~12 Stainless Steel Mini Cylinder MI12X40SUTC
Generating 56.5 N of push force at 0.5 MPa, this double-acting stainless-steel round-body mini cylinder handles compact automation with ease. The Ø12 mm bore uses an M5x0.8 air port and an M6x1.0 male rod thread. Its stainless barrel and rod resist mild corrosion, giving it a real edge over painted alternatives in damp or washdown environments. The riveted construction keeps the body light, while fixed TPU bumper pads absorb the impact at stroke end.
Because the bore follows ISO 6432 mounting dimensions, it drops directly into standard mini-cylinder brackets and clevises. This specific SKU includes a piston magnet for CMSG, DMSG or EMSG sensors. Plan for a safe working load of about 34 N, or lifting a 2.9 kg part vertically with a 2:1 safety margin, rather than relying on the maximum theoretical rating.
Airtac MI8~12 Stainless Steel Mini Cylinder MI12X40SUTC Technical Specifications
| Model | Airtac MI8~12 Stainless Steel Mini Cylinder MI12X40SUTC |
|---|---|
| Series | MI ISO 6432 mini cylinder |
| Bore size | Ø12 mm |
| Stroke | 40 mm |
| Acting type | Double acting |
| Port size | M5×0.8 |
| Rod thread | M6×1.0 |
| 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 250 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 (Ø12mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 57 N | 42 N |
| 0.7 MPa | 79 N | 59 N |
| Max (@1.0 MPa) | 12 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 MI12X40SUTC
| MI | ISO 6432 round-body mini cylinder (double-acting). |
|---|---|
| 12 | 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 MI12X40SUTC Is Used
Electronic Component Sorting
Pushes small electronic parts down a testing chute using a safe 34 N working load, relying on the built-in magnet for position confirmation.
Small Carton Flap Folding
Folds light cardboard flaps on a packaging line where the stainless body withstands occasional washdowns during cleaning shifts.
Labelling Machine Diverter
Acts as a high-speed diverter gate for thin labels, using the TC trunnion to pivot smoothly and the TPU bumpers to soften stroke impact.
Is the Airtac MI8~12 Stainless Steel Mini Cylinder MI12X40SUTC the Right Cylinder?
If your task needs less force, the Ø10 bore provides 39.3 N of push at 0.5 MPa; stepping up to the Ø16 bore yields 100.5 N. This 40 mm stroke sits well within the 250 mm maximum for this bore, keeping rod bending stress low. The included TC trunnion mount pairs with the U 90-degree rear cover for flexible pivot installations. Remember that air pressure alone does not secure the piston if the valve is centred or air is lost; the rod will drift. For a locked load, install an external rod lock or a pilot-operated check valve rather than relying on the bumper pads.
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 MI12X40SUTC FAQ
At 0.5 MPa it pushes 56.5 N and pulls 42.4 N. At 0.7 MPa it pushes 79.1 N and pulls 59.4 N. The theoretical maximum force is 11.5 kgf at 1.0 MPa. The air port is M5x0.8.
No, the base MI uses fixed TPU bumper pads to decelerate the stroke end, not an adjustable air cushion. Additionally, it cannot hold a load if air is lost; you need an external rod lock or pilot check valve. The -S magnet allows CMSG, DMSG and EMSG sensors.
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