Airtac MI8~12 Stainless Steel Mini Cylinder MI12X70SU
The AirTAC Airtac MI8~12 Stainless Steel Mini Cylinder MI12X70SU is a genuine double acting round-body mini air cylinder with a Ø12mm bore and 70mm 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
- Stroke70 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 MI12X70SU
Generating 56.5 N of push force at 0.5 MPa, this double-acting stainless-steel round-body mini cylinder is engineered for compact automation. The Ø12 mm bore operates on an M5x0.8 air port and features a 70 mm stroke. Because the piston carries a magnet (indicated by the -S suffix), it is fully compatible with CMSG, DMSG, and EMSG reed or electronic switches for precise end-of-stroke detection. The riveted stainless barrel and rod provide excellent mild-corrosion resistance, outperforming painted alternatives in damp or washdown settings.
The rear U-style cover mounts at a 90-degree angle, optimizing port and pivot orientation in tight spaces. Its ISO 6432 mounting interface drops directly into standard mini-cylinder brackets and clevises, simplifying machine design. Fixed TPU bumper pads absorb stroke-end impact to protect the mechanism. For practical sizing, plan for about 34 N of real work at 0.5 MPa; this equates to lifting roughly 2.9 kg vertically with a safe 2:1 margin.
Airtac MI8~12 Stainless Steel Mini Cylinder MI12X70SU Technical Specifications
| Model | Airtac MI8~12 Stainless Steel Mini Cylinder MI12X70SU |
|---|---|
| Series | MI ISO 6432 mini cylinder |
| Bore size | Ø12 mm |
| Stroke | 70 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 MI12X70SU
| MI | ISO 6432 round-body mini cylinder (double-acting). |
|---|---|
| 12 | Bore size in mm. |
| ×70 | 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 MI12X70SU Is Used
Electronic Component Sorting
Actuates a 70 mm diverter arm in a PCB assembly line, utilizing the 56.5 N push force to flick components into correct bins.
Small Carton Flap Folding
Deploys a folding lug for lightweight cardboard packaging, where the 42.4 N pull force reliably retracts the mechanism.
Lab Sample Ejection
Pushes prepared test tubes out of a centrifuge carousel, leveraging the stainless steel construction to resist humid laboratory environments.
Is the Airtac MI8~12 Stainless Steel Mini Cylinder MI12X70SU the Right Cylinder?
When sizing this 70 mm stroke actuator, compare it against adjacent bores: the smaller Ø10 MI yields 39.3 N of push at 0.5 MPa, while the larger Ø16 MI provides 100.5 N. Choose the Ø12 when your load falls right in that middle ground, utilizing its 42.4 N pull force for retraction tasks. The 70 mm stroke is well within the 250 mm maximum standard stroke for this bore, so no special ordering is required. If your mechanism experiences side loads, ensure adequate guide rails to prevent rod bending over the 70 mm extension.
Remember that a standard double-acting cylinder drifts when air pressure is lost or the directional valve is centered; the TPU bumpers only decelerate the piston near the stroke end and do not function as a locking brake. If your application requires strict position holding, integrate an external rod lock or a pilot-operated check valve into the pneumatic circuit.
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 MI12X70SU FAQ
This double-acting cylinder has an M5x0.8 air port. It generates 56.5 N push and 42.4 N pull at 0.5 MPa, increasing to 79.1 N push and 59.4 N pull at 0.7 MPa. The theoretical maximum force is 11.5 kgf at 1.0 MPa.
Yes, the -S suffix denotes a built-in piston magnet, allowing you to mount CMSG, DMSG, or EMSG switches directly onto the body. The U back cover provides a 90-degree mounting interface, which orients the pivot perpendicular to the piston rod for compact installations.
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