Airtac MI8~12 Stainless Steel Mini Cylinder MI12X85SU
The AirTAC Airtac MI8~12 Stainless Steel Mini Cylinder MI12X85SU is a genuine double acting round-body mini air cylinder with a Ø12mm bore and 85mm 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
- Stroke85 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 MI12X85SU
Delivering 56.5 N of push force at 0.5 MPa, this double-acting stainless-steel round-body mini cylinder handles an 85 mm stroke with a compact riveted build. The Ø12 mm bore uses an M5x0.8 air port and a Ø6 mm piston rod. Because the barrel and rod are stainless, it resists mild corrosion better than painted alternatives in damp production areas. Integrated fixed TPU bumper pads absorb the impact at stroke extremes without offering adjustable cushioning.
The built-in piston magnet (-S) supports CMSG, DMSG and EMSG switches for position sensing, while the U-style 90-degree rear cover simplifies side-mounting. Plan for roughly 34 N of actual work at 0.5 MPa, which translates to lifting about 2.9 kg vertically with a 2:1 safety margin. Its ISO 6432 mounting dimensions mean it drops directly into standard mini-cylinder brackets and clevises.
Airtac MI8~12 Stainless Steel Mini Cylinder MI12X85SU Technical Specifications
| Model | Airtac MI8~12 Stainless Steel Mini Cylinder MI12X85SU |
|---|---|
| Series | MI ISO 6432 mini cylinder |
| Bore size | Ø12 mm |
| Stroke | 85 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 MI12X85SU
| MI | ISO 6432 round-body mini cylinder (double-acting). |
|---|---|
| 12 | Bore size in mm. |
| ×85 | 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 MI12X85SU Is Used
PCB Depaneling Gate
Actuates a lightweight routing gate to separate printed circuit boards, using the 85 mm stroke and 56.5 N thrust to push parts smoothly into the sorting bin.
Lab Reagent Dispenser
Drives a 90-degree pivoting manifold via the U rear cover to meter precise chemical doses, relying on the stainless rod to withstand occasional splash exposure.
Small Parts Diverter
Pushes lightweight plastic caps off a conveyor belt at 0.5 MPa, safely handling the 34 N safe working load while a DMSG sensor confirms the stroke end.
Is the Airtac MI8~12 Stainless Steel Mini Cylinder MI12X85SU the Right Cylinder?
When sizing this 12 mm bore, compare it against the smaller Ø8 bore (25.1 N push @0.5 MPa) if your load is very light, or step up to the Ø16 bore (100.5 N push @0.5 MPa) if you need significantly more thrust. The 85 mm stroke is well within the 250 mm maximum standard stroke for this bore, keeping the rod bending risk low. For position feedback, the -S magnet pairs directly with CMSG, DMSG or EMSG sensors.
Remember that the fixed TPU bumpers only decelerate the piston near the end of travel; they do not function as a brake. If air pressure drops or the valve is centred, the rod will drift and drop the load. To maintain vertical positioning safely, install an external pilot-operated check valve or a dedicated rod lock.
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 MI12X85SU FAQ
This double-acting cylinder features an M5x0.8 port and generates 56.5 N push / 42.4 N pull at 0.5 MPa, and 79.1 N push / 59.4 N pull at 0.7 MPa. The theoretical maximum force is 11.5 kgf at 1.0 MPa.
Yes, the -S suffix indicates a built-in magnet compatible with CMSG, DMSG and EMSG electronic switches. However, the cylinder cannot hold a load if air is lost; the fixed TPU bumpers only decelerate the stroke end, so you need an external rod lock or pilot check valve to prevent drifting.
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