Airtac MI8~12 Stainless Steel Mini Cylinder MI12X55U
The AirTAC Airtac MI8~12 Stainless Steel Mini Cylinder MI12X55U is a genuine double acting round-body mini air cylinder with a Ø12mm 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.
- BoreØ12 mm
- Stroke55 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 MI12X55U
Generating 56.5 N of push force at 0.5 MPa, this double-acting stainless-steel mini cylinder handles light-duty positioning with ease. The Ø12 mm bore features an M5x0.8 port and a male M6x1.0 rod thread, while the rear U cover provides a 90-degree mounting orientation for compact machinery layouts. Its stainless barrel and rod resist mild corrosion, outperforming painted alternatives in damp or washdown environments.
Built to ISO 6432 mounting dimensions, the round-body riveted construction drops directly into standard mini-cylinder brackets and clevises. Fixed TPU bumper pads absorb stroke-end impact without offering adjustable cushioning. For practical sizing, plan for a safe working load of about 34 N, which means it lifts roughly 2.9 kg vertically with a 2:1 safety margin. Because this specific SKU lacks the -S magnet, it cannot accept CMSG, DMSG or EMSG position switches.
Airtac MI8~12 Stainless Steel Mini Cylinder MI12X55U Technical Specifications
| Model | Airtac MI8~12 Stainless Steel Mini Cylinder MI12X55U |
|---|---|
| Series | MI ISO 6432 mini cylinder |
| Bore size | Ø12 mm |
| Stroke | 55 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 MI12X55U
| MI | ISO 6432 round-body mini cylinder (double-acting). |
|---|---|
| 12 | 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 MI12X55U Is Used
Electronic Component Sorting
Pushes delicate PCBs or microchips into testing fixtures using a safe 34 N working load, preventing damage to fragile traces during automated assembly.
Small Pouch Deflection
Employs the 90-degree U rear cover to fit within tight packaging frames, actuating light guide flaps for dry-goods pouch filling.
Lab Sample Ejection
Leverages the stainless-steel construction to withstand humid laboratory environments, ejecting 2.9 kg sample trays from testing stations.
Is the Airtac MI8~12 Stainless Steel Mini Cylinder MI12X55U the Right Cylinder?
When sizing this 55 mm stroke actuator, compare it against its neighbours: the smaller Ø10 bore yields 39.3 N of push at 0.5 MPa, whereas stepping up to the Ø16 bore provides 100.5 N. If your application demands position feedback, select the -S magnet version to enable electronic sensing. The 55 mm stroke is well within the 250 mm standard limit, keeping the assembly compact with minimal rod bending risk.
Remember that a standard double-acting cylinder drifts when air pressure is lost or the valve is centred. The TPU bumpers only decelerate the piston near the end of travel and do not function as a locking brake. To suspend a load safely mid-stroke, 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 MI12X55U FAQ
At 0.5 MPa it provides 56.5 N push and 42.4 N pull. At 0.7 MPa it provides 79.1 N push and 59.4 N pull. The theoretical maximum force is 11.5 kgf at 1.0 MPa. The air port is M5x0.8 and the male rod thread is M6x1.0.
This specific SKU lacks a magnet, so it cannot accept CMSG, DMSG or EMSG switches. Structurally, it uses ISO 6432 mounting dimensions, allowing it to drop into standard mini-cylinder brackets and clevises. It features fixed TPU bumper pads for deceleration, not adjustable air cushions.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models usually ship in 3-4 days.
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