Airtac MI8~12 Stainless Steel Mini Cylinder MI8X55CA
The AirTAC Airtac MI8~12 Stainless Steel Mini Cylinder MI8X55CA is a genuine double acting round-body mini air cylinder with a Ø8mm bore and 55mm 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
- Stroke55 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 MI8X55CA
Delivering 25.1 N of push force at 0.5 MPa, the AirTAC MI8X55CA 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 alternatives in damp or washdown-prone environments. The riveted construction keeps the body light, while fixed TPU bumper pads absorb the impact at stroke extremes without offering adjustable cushioning.
Because this bore accepts the ISO 6432 mounting interface, it drops directly into standard mini-cylinder brackets and clevises. The rear CA pivot cover simplifies angular load alignment. Plan for roughly 15 N of actual work at 0.5 MPa to maintain a safe margin, which translates to lifting about 1.3 kg vertically. This base SKU lacks the -S magnet, so it cannot host CMSG, DMSG or EMSG reed switches; air enters via an M5×0.8 port.
Airtac MI8~12 Stainless Steel Mini Cylinder MI8X55CA Technical Specifications
| Model | Airtac MI8~12 Stainless Steel Mini Cylinder MI8X55CA |
|---|---|
| Series | MI ISO 6432 mini cylinder |
| Bore size | Ø8 mm |
| Stroke | 55 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 MI8X55CA
| MI | ISO 6432 round-body mini cylinder (double-acting). |
|---|---|
| 8 | Bore size in mm. |
| ×55 | 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 MI8X55CA Is Used
Micro-Clamp Actuation
Drives small pneumatic clamps in electronics assembly fixtures, using its 25.1 N thrust to hold delicate PCBs without crushing components.
Lab Dispenser Pusher
Advances a syringe or micro-valve in analytical instruments, where the stainless build resists chemical vapours and the CA clevis accommodates slight misalignment.
Small Part Ejection
Pushes lightweight plastic mouldings out of a sub-assembly jig, relying on the fixed TPU bumpers to quietly arrest the 55 mm stroke.
Is the Airtac MI8~12 Stainless Steel Mini Cylinder MI8X55CA the Right Cylinder?
When sizing this 8 mm bore, stepping up to the Ø10 variant raises the 0.5 MPa push force to 39.3 N, whereas there is no smaller standard MI option below it. The 55 mm stroke sits well within the 150 mm maximum standard limit, keeping the rod bending risk low. The CA rear clevis is ideal for pivoting mechanisms, but remember that a plain double-acting cylinder drifts if air pressure drops or the valve is centred—the TPU bumpers only decelerate the end of stroke and act as neither a brake nor a position lock. To suspend a load safely, fit an external rod lock or a pilot-operated check valve.
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 MI8X55CA 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. This 8 mm bore unit uses an M5×0.8 air port.
No, this specific SKU lacks the internal magnet. You must select the -S variant to use CMSG, DMSG or EMSG switches. The cylinder features a stainless-steel round body with ISO 6432 mounting dimensions and fixed TPU bumper pads.
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