Airtac MID Series Double Rod Mini Cylinder MID20X20
The AirTAC Airtac MID Series Double Rod Mini Cylinder MID20X20 is a genuine double acting, double rod round-body mini air cylinder with a Ø20mm 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.
- BoreØ20 mm
- Stroke20 mm
- Port size1/8"
- Acting typeDouble acting, double rod
- Rod threadM8×1.25
- CushionFixed TPU bumper pads
About the Airtac MID Series Double Rod Mini Cylinder MID20X20
Delivering 131.9 N of thrust at 0.5 MPa in both extend and retract directions, this AirTAC round-body mini cylinder uses a through-rod design where a piston rod exits both end covers. Because the rod occupies each side, the effective area is identical both ways, yielding perfectly symmetric force. The twin-rod architecture inherently resists rotation and side loads, providing steadier guiding for light tasks without needing an external guide rail.
Built with a stainless-steel barrel and rod, the riveted construction handles mild corrosion and washdown environments. It conforms to the ISO 6432 mounting interface for standard mini brackets. Operating at 30-800 mm/s on a 1/8" port, it provides a safe working load of roughly 79 N (about 60% of the 0.5 MPa figure). Note that this specific SKU lacks a magnet and cannot host CMSG/DMSG/EMSG sensors; the -S variant is required for position detection.
Airtac MID Series Double Rod Mini Cylinder MID20X20 Technical Specifications
| Model | Airtac MID Series Double Rod Mini Cylinder MID20X20 |
|---|---|
| Series | MID ISO 6432 mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 20 mm |
| Acting type | Double acting, double rod |
| Port size | 1/8" |
| Rod thread | M8×1.25 |
| 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 (Ø20mm)
| Pressure | Force (both ways) |
|---|---|
| 0.5 MPa | 132 N |
| 0.7 MPa | 185 N |
| Max (@1.0 MPa) | 27 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 MID20X20
| MID | ISO 6432 round-body mini cylinder (double-rod). |
|---|---|
| 20 | 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 MID20X20 Is Used
Symmetric Shuttle Transfer
Pushes a light workpiece 20 mm left or right with 131.9 N of equal force, using the twin-rod stability to prevent binding during rapid lateral shuttling.
Back-Rod Switch Trip
Uses the exposed rear rod end to mechanically strike an external limit switch, confirming the 20 mm stroke completion without needing an internal cylinder magnet.
Guided Pin Insertion
Presses a pin or small component with steady, anti-rotation pressure, leveraging the through-rod to keep the tooling perfectly aligned during the insertion stroke.
Is the Airtac MID Series Double Rod Mini Cylinder MID20X20 the Right Cylinder?
When sizing this 20 mm bore, consider stepping down to the MID16 (86.4 N @0.5 MPa) for lighter duties, or up to the MID25 (206.1 N @0.5 MPa) if you need more punch. The double-rod layout is optimal when you need anti-rotation stability, want to trip a switch via the back rod end, or drive a second load simultaneously. With a 2:1 safety margin, expect to move about 6.7 kg vertically each way.
Keep in mind that the fixed TPU bumper pads only decelerate the stroke end; they do not lock the piston. If air pressure drops, the load will drift, so employ an external rod lock or pilot check valve for holding. Mounting options include LB foot, FA flange, and TC trunnion (the SDB pivot block is unavailable here).
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 MID20X20 FAQ
Because it is a double-rod cylinder, the force is equal both ways: 131.9 N at 0.5 MPa, 184.7 N at 0.7 MPa, and a maximum theoretical output of 26.9 kgf at 1.0 MPa. It uses a 1/8" port.
No, this specific SKU does not include a magnet and cannot accept CMSG, DMSG, or EMSG sensors. You would need the -S variant for magnetic position sensing. However, the stainless steel double-rod design still provides excellent anti-rotation resistance.
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