Airtac MI8~12 Stainless Steel Mini Cylinder MI12X40SCA
The AirTAC Airtac MI8~12 Stainless Steel Mini Cylinder MI12X40SCA is a genuine double acting round-body mini air cylinder with a Ø12mm 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.
- BoreØ12 mm
- Stroke40 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 MI12X40SCA
Delivering 56.5 N of push force at 0.5 MPa, this double-acting stainless-steel round-body mini cylinder handles compact actuation with precision. The riveted barrel and Ø6 mm piston rod shrug off mild corrosion, making it a hardier choice than painted alternatives in damp production areas. Because this 12 mm bore uses the ISO 6432 mounting interface, it drops directly into standard mini-cylinder brackets and clevises without redesign.
The integrated piston magnet (-S) supports CMSG, DMSG and EMSG switches for position sensing, while fixed TPU bumper pads absorb stroke-end impacts. Plan for roughly 34 N of actual work at 0.5 MPa to ensure reliable operation, which translates to lifting about 2.9 kg vertically with a 2:1 safety margin. Air connects via an M5x0.8 port, and the CA rear cover provides an integral pivot for clevis mounting.
Airtac MI8~12 Stainless Steel Mini Cylinder MI12X40SCA Technical Specifications
| Model | Airtac MI8~12 Stainless Steel Mini Cylinder MI12X40SCA |
|---|---|
| Series | MI ISO 6432 mini cylinder |
| Bore size | Ø12 mm |
| Stroke | 40 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 MI12X40SCA
| MI | ISO 6432 round-body mini cylinder (double-acting). |
|---|---|
| 12 | 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 MI12X40SCA Is Used
Electronic Component Sorting
Actuates small diverter gates on PCB handling lines, using the 56.5 N output to push lightweight trays into inspection lanes.
Label Applicator Tamping
Deploys a 40 mm stroke to tamp adhesive labels onto small cartons, benefiting from the CA pivot mount to absorb angular misalignment.
Lab Sample Ejection
Ejects filled vials from testing carousels where the stainless steel construction resists humidity and chemical washdowns.
Is the Airtac MI8~12 Stainless Steel Mini Cylinder MI12X40SCA the Right Cylinder?
When sizing this 12 mm bore, dropping down to an Ø8 model halves the output to 25.1 N, whereas stepping up to a Ø16 bore increases the push force to 100.5 N at 0.5 MPa. The 40 mm stroke is well within the 250 mm maximum standard stroke, keeping the assembly compact and rigid. With a 6 mm rod, side loads should be minimized to prevent bending, especially given the pivot action of the CA back cover.
Note that a standard double-acting cylinder drifts when air pressure is lost or the valve is centered, as the fixed TPU pads only decelerate the end of stroke rather than locking the rod. To suspend a load safely during an air failure, specify an external rod lock or a pilot-operated check valve. Position detection requires the built-in magnet, as a standard SKU without the -S suffix cannot accept a sensor.
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 MI12X40SCA FAQ
At 0.5 MPa, the push force is 56.5 N and the pull force is 42.4 N. At 0.7 MPa, push is 79.1 N and pull is 59.4 N. The theoretical maximum force is 11.5 kgf at 1.0 MPa. The air port size is M5x0.8.
No, the fixed TPU bumper pads only decelerate the piston near the stroke end and do not act as a brake. If air is lost, the rod will drift. For vertical loads, you must use an external rod lock or a pilot-operated check valve.
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