Airtac MI8~12 Stainless Steel Mini Cylinder MI12X400SU
The AirTAC Airtac MI8~12 Stainless Steel Mini Cylinder MI12X400SU is a genuine double acting round-body mini air cylinder with a Ø12mm bore and 400mm 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
- Stroke400 mm
- Port sizeM5×0.8
- Acting typeDouble acting
- Rod threadM6×1.0
- CushionFixed TPU bumper pads
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac MI8~12 Stainless Steel Mini Cylinder MI12X400SU
Generating 56.5 N of push force at 0.5 MPa, this double-acting stainless-steel mini cylinder handles long-reach actuation with a 400 mm stroke. Because 400 mm exceeds the 250 mm standard limit for this bore, it is manufactured as a made-to-order unit. The Ø12 mm bore operates on an M5x0.8 port, and the rolled stainless barrel shrugs off mild corrosion better than painted alternatives in damp environments.
It features a built-in piston magnet for CMSG, DMSG or EMSG sensors, along with a 90-degree U rear cover for flexible port and mounting orientation. Plan for roughly 34 N of actual work at 0.5 MPa, which translates to lifting about 2.9 kg vertically with a 2:1 safety margin. Fixed TPU bumper pads absorb the impact at stroke extremes without adding bulk.
Airtac MI8~12 Stainless Steel Mini Cylinder MI12X400SU Technical Specifications
| Model | Airtac MI8~12 Stainless Steel Mini Cylinder MI12X400SU |
|---|---|
| Series | MI ISO 6432 mini cylinder |
| Bore size | Ø12 mm |
| Stroke | 400 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 MI12X400SU
| MI | ISO 6432 round-body mini cylinder (double-acting). |
|---|---|
| 12 | Bore size in mm. |
| ×400 | 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 MI12X400SU Is Used
Sorting Diverter
Pushes lightweight parcels on a packaging line using the 56.5 N thrust, with the 90-degree U cover allowing tight side-mounting.
Lab Sample Shuttle
Moves test tubes between stations over a 400 mm gap, relying on the stainless construction to withstand humid laboratory conditions.
Parts Ejector
Clears small plastic mouldings from a die zone, using the built-in magnet and a DMSG sensor to confirm full retraction.
Is the Airtac MI8~12 Stainless Steel Mini Cylinder MI12X400SU the Right Cylinder?
When sizing this actuator, stepping down to an Ø8 bore yields only 25.1 N of push at 0.5 MPa, while stepping up to a Ø16 bore provides 100.5 N. The 400 mm stroke demands careful alignment to prevent rod bending and premature seal wear. Because standard air pressure does not lock the piston in place, expect drift if air is lost or the valve is centred; integrate an external pilot check valve if your application requires position holding. The ISO 6432 mounting interface ensures it drops directly into standard mini-cylinder brackets and clevises.
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 MI12X400SU FAQ
This double-acting cylinder uses an M5x0.8 port and generates 56.5 N push / 42.4 N pull at 0.5 MPa, 79.1 N push / 59.4 N pull at 0.7 MPa, with a theoretical maximum of 11.5 kgf at 1.0 MPa.
No, the piston will drift if air is lost or the valve is centred. The fixed TPU bumper pads only decelerate the stroke end; you must add an external rod lock or pilot check valve to hold a suspended load.
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1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
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