Airtac MID Series Double Rod Mini Cylinder MID12X40S
The AirTAC Airtac MID Series Double Rod Mini Cylinder MID12X40S is a genuine double acting, double rod 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, double rod
- Rod threadM6×1.0
- CushionFixed TPU bumper pads
About the Airtac MID Series Double Rod Mini Cylinder MID12X40S
Delivering 42.4 N of thrust in both directions at 0.5 MPa, this stainless steel round-body mini cylinder uses a through-rod design to equalize extend and retract forces. The Ø6 mm twin rod resists rotation and side load, providing steadier guiding without an external guide for light jobs. The rear rod end is free to trip a switch or carry a stop. Because a rod occupies each side, both faces use the rod-side pull area, meaning you get identical push and pull power. It uses an M5x0.8 air port and a male M6x1.0 rod thread.
Built with a riveted stainless barrel and rod, it handles mild corrosion and washdown environments. The -S suffix denotes a built-in piston magnet, enabling position sensing with CMSG, DMSG, or EMSG switches. Operating at 30-800 mm/s, it drops into standard mini brackets via the ISO 6432 mounting interface. For a safe working load, expect about 25 N (60% of the 0.5 MPa force), which moves roughly 2.2 kg vertically each way with a 2:1 margin.
Airtac MID Series Double Rod Mini Cylinder MID12X40S Technical Specifications
| Model | Airtac MID Series Double Rod Mini Cylinder MID12X40S |
|---|---|
| Series | MID ISO 6432 mini cylinder |
| Bore size | Ø12 mm |
| Stroke | 40 mm |
| Acting type | Double acting, double rod |
| 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 | Force (both ways) |
|---|---|
| 0.5 MPa | 42 N |
| 0.7 MPa | 59 N |
| Max (@1.0 MPa) | 9 kgf |
Double-rod: a rod exits both covers, so output force is equal in both directions (rod-side area used).
Model Code: Airtac MID Series Double Rod Mini Cylinder MID12X40S
| MID | ISO 6432 round-body mini cylinder (double-rod). |
|---|---|
| 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 MID Series Double Rod Mini Cylinder MID12X40S Is Used
Symmetric Component Shuttle
Ideal for moving light electronic parts between stations, using the equal 42.4 N force both ways to push and pull a tray without drift.
Back-Rod Switch Trip
The extended rear rod end directly trips a limit switch or carries a physical flag, confirming stroke completion without extra sensors on the front.
Anti-Rotation Guiding Jig
The Ø6 mm twin rod resists side load and rotation, steadying a small pick-and-place head within a 25 N safe working load.
Is the Airtac MID Series Double Rod Mini Cylinder MID12X40S the Right Cylinder?
If your application needs less force, the smaller MID10X40S offers 33.0 N at 0.5 MPa; stepping up to the MID16X40S provides 86.4 N. This Ø12 bore is ideal when you need symmetric shuttle movement or a back-rod stop within a 42.4 N envelope. The double rod prevents twist during guided pushes, and the -S magnet allows electronic or reed sensing. Mount via LB foot, FA flange, or TC trunnion (the SDB pivot-block is unavailable for this double-rod variant). Note that fixed TPU bumpers decelerate the stroke end but do not lock the piston. For holding a load on air loss, install an external rod lock or pilot check valve.
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 MID Series Double Rod Mini Cylinder MID12X40S FAQ
The force is equal both ways because a rod exits each end. It provides 42.4 N at 0.5 MPa, 59.4 N at 0.7 MPa, and a maximum theoretical force of 8.6 kgf at 1.0 MPa.
Yes. The -S suffix means it has a built-in piston magnet for CMSG, DMSG, or EMSG switches. The stainless build also resists mild washdown corrosion.
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1-Year Warranty
Covers non-human-caused product damage.
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