Airtac MID Series Double Rod Mini Cylinder MID40X15S
The AirTAC Airtac MID Series Double Rod Mini Cylinder MID40X15S is a genuine double acting, double rod round-body mini air cylinder with a Ø40mm bore and 15mm stroke, 1/4" air ports and a stainless-steel barrel and rod for mildly corrosive environments.
- BoreØ40 mm
- Stroke15 mm
- Port size1/4"
- Acting typeDouble acting, double rod
- Rod threadM12×1.25
- CushionFixed TPU bumper pads
About the Airtac MID Series Double Rod Mini Cylinder MID40X15S
With a rod exiting both end covers, the AirTAC MID40X15S delivers a true 527.8 N of force at 0.5 MPa in both directions - no push/pull difference to design around. The through-rod design also resists rotation and side loading, making it a steadier actuator for guided movements than a single-rod cylinder of the same bore.
This round-body mini cylinder uses a stainless-steel barrel and rod for mild corrosion and washdown resistance, and its fixed TPU bumper pads soften the end of each stroke. The -S suffix means a built-in piston magnet is ready for CMSG, DMSG, or EMSG sensors. With a 1/4" port and M12x1.25 rod thread, it suits compact machinery where symmetric force and a clean envelope matter.
Airtac MID Series Double Rod Mini Cylinder MID40X15S Technical Specifications
| Model | Airtac MID Series Double Rod Mini Cylinder MID40X15S |
|---|---|
| Series | MID mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 15 mm |
| Acting type | Double acting, double rod |
| Port size | 1/4" |
| Rod thread | M12×1.25 |
| 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 500 mm |
Specifications follow the official AirTAC MI/MIC (ISO 6432) datasheet. Barrel & rod: stainless steel (round-body, riveted construction). Thread options: PT (blank) / G. Note: the Ø40 bore is a larger, non-ISO-6432 size.
Theoretical Output Force (Ø40mm)
| Pressure | Force (both ways) |
|---|---|
| 0.5 MPa | 528 N |
| 0.7 MPa | 739 N |
| Max (@1.0 MPa) | 108 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 MID40X15S
| MID | round-body mini cylinder (double-rod). |
|---|---|
| 40 | Bore size in mm. |
| ×15 | 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 MID40X15S Is Used
Guided pusher
Use the twin rod to push parts into a nested fixture with less wobble. The 527.8 N force at 0.5 MPa handles moderate assembly tasks, and the anti-rotation rod keeps the pusher face square.
Back-rod switch trip
Mount a limit switch or proximity sensor at the rear rod end. As the cylinder strokes, the back rod trips the switch precisely - a simple way to confirm position without adding an external cam.
Symmetric shuttle
Shuttle a light workpiece between two stations with equal push and pull. The 738.9 N at 0.7 MPa gives balanced motion in both directions, ideal for a compact transfer slide.
Is the Airtac MID Series Double Rod Mini Cylinder MID40X15S the Right Cylinder?
At 40 mm bore, the MID40X15S produces 527.8 N at 0.5 MPa. If you need less force, the MID32X15S offers 345.6 N at the same pressure; there is no larger MID bore. The double rod earns its place when you need equal extend/retract force, resistance to rotation, or a back rod end to trip a switch or carry a stop.
Remember this cylinder does not hold a load if air pressure is lost - the piston drifts. Use an external rod lock or pilot check valve for held positions. The -S magnet enables CMSG/DMSG/EMSG sensors; the SDB pivot block is not available on this double-rod variant.
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 MID40X15S FAQ
Force is equal in both directions because a rod occupies each side. At 0.5 MPa it delivers 527.8 N; at 0.7 MPa it delivers 738.9 N. Maximum theoretical force at 1.0 MPa is 107.6 kgf.
Yes. The -S indicates a built-in piston magnet, so you can mount CMSG, DMSG, or EMSG switches on the barrel. The stainless round-body construction also resists mild corrosion, and the 1/4" port suits standard fittings.
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