Airtac MI8~12 Stainless Steel Mini Cylinder MI8X40CALB
The AirTAC Airtac MI8~12 Stainless Steel Mini Cylinder MI8X40CALB is a genuine double acting round-body mini air cylinder with a Ø8mm 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.
- BoreØ8 mm
- Stroke40 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 MI8X40CALB
Delivering 25.1 N of push force at 0.5 MPa, the AirTAC MI8X40CALB is a compact 8 mm bore double-acting round-body mini cylinder built for tight spaces. Its stainless-steel barrel and rod shrug off mild corrosion, giving it a real edge over painted 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.
This 40 mm stroke unit uses an M5x0.8 air port and an M4x0.7 male rod thread. Because it lacks the -S magnet suffix, it cannot host CMSG, DMSG or EMSG reed switches. For practical sizing, plan for about 15 N of actual work at 0.5 MPa, which means it can safely lift a 1.3 kg part vertically with a 2:1 safety margin.
Airtac MI8~12 Stainless Steel Mini Cylinder MI8X40CALB Technical Specifications
| Model | Airtac MI8~12 Stainless Steel Mini Cylinder MI8X40CALB |
|---|---|
| Series | MI ISO 6432 mini cylinder |
| Bore size | Ø8 mm |
| Stroke | 40 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 MI8X40CALB
| MI | ISO 6432 round-body mini cylinder (double-acting). |
|---|---|
| 8 | 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 MI8X40CALB Is Used
Micro-clip insertion
Pushes delicate wire clips into PCB assemblies using the 15 N safe working load without damaging surrounding components.
Lab tube diverter
Acts as a compact 40 mm stroke actuator to pivot small fluid routing gates in diagnostic machinery, benefiting from the stainless build.
Light part ejection
Ejects tiny plastic moulded parts weighing under 1.3 kg from a test fixture, utilising the LB foot mount for stable base mounting.
Is the Airtac MI8~12 Stainless Steel Mini Cylinder MI8X40CALB the Right Cylinder?
As the smallest bore in the MI family, the MI8X40CALB sits at the bottom of the range, so if your task needs less than 15 N of working force you will have to look outside this series. Moving up, the next size is the 10 mm bore, which jumps to 39.3 N of push at 0.5 MPa for heavier pushing tasks. This specific SKU includes an LB foot mount and a CA rear clevis, 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; they do not lock the rod, so add an external pilot check valve if you need to hold a vertical load.
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 MI8X40CALB FAQ
This 8 mm bore cylinder features an M5x0.8 port and an M4x0.7 male rod thread. It generates 25.1 N push and 18.8 N pull at 0.5 MPa, increasing to 35.2 N push and 26.4 N pull at 0.7 MPa. The theoretical maximum force is 5.1 kgf at 1.0 MPa.
No, because the model code lacks the -S suffix, it has no internal magnet and cannot accept CMSG, DMSG or EMSG switches. You would need the -S variant for position sensing. It uses standard ISO 6432 mounting dimensions and includes fixed TPU bumper pads rather than an adjustable air cushion.
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