Airtac MID Series Double Rod Mini Cylinder MID25X20S
The AirTAC Airtac MID Series Double Rod Mini Cylinder MID25X20S is a genuine double acting, double rod round-body mini air cylinder with a Ø25mm bore and 20mm 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
- Stroke20 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 MID25X20S
Delivering 206.1 N of thrust at 0.5 MPa in both directions, the AirTAC MID25X20S is a stainless-steel round-body mini cylinder built for balanced actuation. Because the through-rod exits both end covers, extend and retract forces remain identical while the twin-rod geometry naturally resists rotation and side-load twisting. This 25 mm bore, 20 mm stroke variant uses a 1/8" port and an M10x1.25 male rod thread.
The riveted stainless barrel and rod shrug off mild corrosion and washdown environments. It conforms to the ISO 6432 mounting interface for easy bracket interchangeability. With the included -S piston magnet, you can track position using CMSG, DMSG or EMSG switches. For sizing, a safe working load is roughly 124 N, meaning it can vertically lift about 10.5 kg with a 2:1 safety margin.
Airtac MID Series Double Rod Mini Cylinder MID25X20S Technical Specifications
| Model | Airtac MID Series Double Rod Mini Cylinder MID25X20S |
|---|---|
| Series | MID ISO 6432 mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 20 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 MID25X20S
| MID | ISO 6432 round-body mini cylinder (double-rod). |
|---|---|
| 25 | Bore size in mm. |
| ×20 | 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 MID25X20S Is Used
Symmetric Shuttle Transfer
Pushing a light 10 kg parts tray back and forth between two stations, using the equal 206.1 N bidirectional force to maintain a steady, twist-free shuttle rhythm.
Back-Rod Switch Tripping
Using the extended rear rod end to physically strike a limit switch or flag, confirming the 20 mm stroke completion without mounting external proximity sensors.
Guided Pin Insertion
Driving a delicate insertion tool downward with the anti-rotation twin rod preventing any lateral drift during the precise placement of components.
Is the Airtac MID Series Double Rod Mini Cylinder MID25X20S the Right Cylinder?
If you need less push, the MID20X20S offers 131.9 N at 0.5 MPa; stepping up to the MID32X20S yields 345.6 N. The double-rod design shines when you need a back-rod connection to trip a switch, carry a mechanical stop, or drive a second load without adding an external guide. For position feedback, the built-in -S magnet pairs directly with CMSG, DMSG or EMSG sensors.
Mount using LB foot, FA flange or TC trunnion brackets, plus CA, U, R or CM back covers, but note the SDB pivot block is unavailable for this twin-rod variant. Remember that fixed TPU bumper pads only soften stroke ends, not lock the load. If air pressure drops, the piston will drift, so fit an external rod lock or pilot check valve for held loads.
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 MID25X20S FAQ
Because it is a double-rod cylinder, the force is equal both ways: 206.1 N at 0.5 MPa, 288.5 N at 0.7 MPa, and a maximum theoretical output of 42.0 kgf at 1.0 MPa. It uses a 1/8" port.
Yes, the -S suffix means it has a built-in magnet for CMSG, DMSG or EMSG switches. However, it does not hold position if air pressure is lost; the piston drifts and the fixed TPU bumpers only soften the stroke end, so use an external rod lock for holding.
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