Airtac MID Series Double Rod Mini Cylinder MID25X140S
The AirTAC Airtac MID Series Double Rod Mini Cylinder MID25X140S is a genuine double acting, double rod round-body mini air cylinder with a Ø25mm bore and 140mm stroke, 1/8" 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.
- BoreØ25 mm
- Stroke140 mm
- Port size1/8"
- Acting typeDouble acting, double rod
- Rod threadM10×1.25
- CushionFixed TPU bumper pads
About the Airtac MID Series Double Rod Mini Cylinder MID25X140S
Delivering 206.1 N of thrust in both directions at 0.5 MPa, the AirTAC MID25X140S is a 25 mm bore, double-acting through-rod mini cylinder. Because a Ø10 mm piston rod exits both end covers, the extend and retract areas are identical, guaranteeing equal force while resisting rotation and side loads without an external guide. The stainless steel round barrel and rod withstand mild washdowns, and the rear rod end is free to trip a switch or carry a stop. It uses a 1/8" port and an M10x1.25 male rod thread.
This -S variant includes a built-in piston magnet for CMSG, DMSG, or EMSG switches. Operating at 30-800 mm/s with fixed TPU bumper pads, it provides a safe working load of roughly 124 N (about 60% of its 0.5 MPa rating). For vertical lifts, expect to move around 10.5 kg each way with a 2:1 safety margin. It conforms to the ISO 6432 mounting interface for standard mini brackets.
Airtac MID Series Double Rod Mini Cylinder MID25X140S Technical Specifications
| Model | Airtac MID Series Double Rod Mini Cylinder MID25X140S |
|---|---|
| Series | MID ISO 6432 mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 140 mm |
| Acting type | Double acting, double rod |
| Port size | 1/8" |
| Rod thread | M10×1.25 |
| 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.
Theoretical Output Force (Ø25mm)
| Pressure | Force (both ways) |
|---|---|
| 0.5 MPa | 206 N |
| 0.7 MPa | 289 N |
| Max (@1.0 MPa) | 42 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 MID25X140S
| MID | ISO 6432 round-body mini cylinder (double-rod). |
|---|---|
| 25 | Bore size in mm. |
| ×140 | 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 MID25X140S Is Used
Guided Push Station
With 206.1 N of equal force, the twin rod resists rotation to deliver steady, guided pushes for assembly tooling without needing an external guide rail.
Dual-Signal Shuttle
The -S magnet works with CMSG switches, while the extended back rod trips a secondary mechanical flag to confirm stroke completion on packaging lines.
Symmetric Transfer
Moving about 10.5 kg per direction, this cylinder drives a symmetric shuttle mechanism where both the extend and retract strokes perform identical work.
Is the Airtac MID Series Double Rod Mini Cylinder MID25X140S the Right Cylinder?
If you need less force, the MID20X140S offers 131.9 N at 0.5 MPa; stepping up to the MID32X140S yields 345.6 N. The through-rod design shines in applications needing anti-rotation stability or a back-rod switch trip, and the -S magnet enables position sensing. Mount via LB foot, FA flange, or TC trunnion (the SDB pivot block is unavailable here). Note that the bumper pads only soften stroke ends; 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 MID25X140S FAQ
It delivers equal force both ways due to the double-rod design: 206.1 N at 0.5 MPa, 288.5 N at 0.7 MPa, and a maximum theoretical force of 42.0 kgf at 1.0 MPa.
Yes, the -S suffix means it has a built-in magnet for CMSG, DMSG, or EMSG switches. The stainless steel barrel and rod also provide mild corrosion resistance for washdown environments.
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