Airtac MI8~12 Stainless Steel Mini Cylinder MI8X50U
The AirTAC Airtac MI8~12 Stainless Steel Mini Cylinder MI8X50U is a genuine double acting round-body mini air cylinder with a Ø8mm bore and 50mm 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
- Stroke50 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 MI8X50U
Generating 25.1 N of push force at 0.5 MPa, the AirTAC MI8X50U is a compact double-acting round-body mini cylinder built for light-duty automation. Its stainless-steel barrel and Ø4 mm rod shrug off mild corrosion, giving it a real edge over painted-steel actuators in damp or washdown-prone environments. The riveted construction keeps the unit light, while fixed TPU bumper pads absorb the impact at the stroke ends to protect your tooling.
Because this specific SKU lacks the -S magnet, it cannot accept CMSG, DMSG or EMSG position switches. The U-style back cover provides a 90-degree port and mounting orientation, and the M5x0.8 air port keeps the pneumatic footprint minimal. Plan for a safe working load of about 15 N (roughly 60 percent of the 0.5 MPa rating), which translates to lifting a 1.3 kg part vertically with a 2:1 safety margin.
Airtac MI8~12 Stainless Steel Mini Cylinder MI8X50U Technical Specifications
| Model | Airtac MI8~12 Stainless Steel Mini Cylinder MI8X50U |
|---|---|
| Series | MI ISO 6432 mini cylinder |
| Bore size | Ø8 mm |
| Stroke | 50 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 MI8X50U
| MI | ISO 6432 round-body mini cylinder (double-acting). |
|---|---|
| 8 | Bore size in mm. |
| ×50 | 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 MI8X50U Is Used
Micro-clip Insertion
Pushes delicate electronic clips into PCB housings using the 25.1 N push force, where the stainless body resists flux fumes and the 50 mm stroke provides precise travel.
Lab Sample Diversion
Actuates a 90-degree flap gate via the U back cover to route small vials, relying on the compact riveted body to fit inside tight analytical machinery.
Small Bag Sealing
Closes a lightweight pneumatic jaw on a pouch sealer, lifting roughly 1.3 kg of jaw weight vertically while the fixed TPU bumpers prevent harsh end-of-stroke slamming.
Is the Airtac MI8~12 Stainless Steel Mini Cylinder MI8X50U the Right Cylinder?
If the 25.1 N push at 0.5 MPa is insufficient for your fixture, step up to the Ø10 bore (39.3 N push) or down to a smaller actuator if you need to minimize mass. The Ø8 bore uses an M5x0.8 port and an M4x0.7 male rod thread. This stroke of 50 mm is well within the 150 mm maximum standard limit, keeping the rod bending risk low. The U back cover sets a 90-degree mounting plane, but you can also utilise standard ISO 6432 brackets and clevises for this Ø8 size.
Remember that a plain double-acting cylinder drifts when air is lost or the valve is centred; the TPU bumpers only decelerate the stroke end and do not function as a brake. To suspend a load safely, install an external rod lock or a pilot-operated check valve. If you require position feedback, select the -S magnet variant to enable sensor mounting.
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 MI8X50U 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, this specific SKU does not have a magnet, so it cannot accept CMSG, DMSG or EMSG switches. You must order the -S variant for position sensing. It features a stainless-steel round body, uses standard ISO 6432 mounting dimensions for Ø8, and relies on fixed TPU bumper pads rather than an adjustable cushion.
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