Airtac MI8~12 Stainless Steel Mini Cylinder MI8X25SU
The AirTAC Airtac MI8~12 Stainless Steel Mini Cylinder MI8X25SU is a genuine double acting round-body mini air cylinder with a Ø8mm bore and 25mm 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
- Stroke25 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 MI8X25SU
Delivering 25.1 N of push force at 0.5 MPa, this double-acting stainless-steel mini cylinder handles precise small-part tasks. The Ø8 mm bore uses an M5x0.8 air port and an M4x0.7 male rod thread. Its riveted round-body construction pairs a stainless barrel and rod to resist mild corrosion, outlasting painted alternatives in damp environments. Fixed TPU bumper pads absorb stroke-end impact without adjustable cushioning.
Equipped with a piston magnet, the -S suffix supports CMSG, DMSG, and EMSG reed or electronic switches for position sensing. The U back cover provides a 90-degree port orientation for tight routing. For practical sizing, plan for roughly 15 N of real work at 0.5 MPa, which equates to lifting about 1.3 kg vertically with a 2:1 safety margin. Operating speed ranges from 30-800 mm/s.
Airtac MI8~12 Stainless Steel Mini Cylinder MI8X25SU Technical Specifications
| Model | Airtac MI8~12 Stainless Steel Mini Cylinder MI8X25SU |
|---|---|
| Series | MI ISO 6432 mini cylinder |
| Bore size | Ø8 mm |
| Stroke | 25 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 MI8X25SU
| MI | ISO 6432 round-body mini cylinder (double-acting). |
|---|---|
| 8 | Bore size in mm. |
| ×25 | 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 MI8X25SU Is Used
Micro-Clamp Actuation
Drives tiny pneumatic clamps in electronics assembly, using the 25.1 N push force to secure delicate PCBs without crushing components.
Lab Dispenser Routing
Indexes small fluid valves on automated laboratory dispensing rigs, relying on the stainless build to withstand humid, washdown-prone environments.
Light Part Ejection
Pushes lightweight plastic parts out of molding machines, where the 1.3 kg vertical lift capacity easily clears small finished goods.
Is the Airtac MI8~12 Stainless Steel Mini Cylinder MI8X25SU the Right Cylinder?
As the smallest bore in the MI family, there is no smaller option; if 25.1 N push at 0.5 MPa is insufficient, step up to the Ø10 bore generating 39.3 N. The ISO 6432 mounting interface allows this 8 mm bore to drop directly into standard mini-cylinder brackets and clevises. Because the U rear cover orients the port 90 degrees, ensure your tubing layout accommodates the side exit.
Remember that a standard double-acting cylinder drifts if air pressure drops or the valve is centered, as the TPU bumpers only decelerate the stroke end rather than locking the rod. To suspend a load safely during an outage, integrate 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 MI8X25SU FAQ
The Ø8 mm bore generates 25.1 N push and 18.8 N pull at 0.5 MPa, or 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. The air port is M5x0.8.
Yes, bores Ø8-Ø25 use the ISO 6432 mounting interface, so it fits standard mini-cylinder clevises and brackets. Because this SKU includes the -S magnet, you can attach CMSG, DMSG, or EMSG switches for position detection.
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1-Year Warranty
Covers non-human-caused product damage.
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