Airtac MID Series Double Rod Mini Cylinder MID20X30S
The AirTAC Airtac MID Series Double Rod Mini Cylinder MID20X30S is a genuine double acting, double rod round-body mini air cylinder with a Ø20mm bore and 30mm 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
- Stroke30 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 MID20X30S
Delivering 131.9 N of thrust at 0.5 MPa in both directions, the AirTAC MID20X30S is a double-acting, through-rod round-body mini cylinder. Because a rod exits both end covers, the extend and retract areas are identical, providing equal force while the twin rod resists rotation and side loads for steadier guiding without an external guide. The stainless-steel barrel and rod offer mild corrosion and washdown resistance.
This Ø20 mm bore unit uses the ISO 6432 mini-cylinder mounting interface, dropping easily into standard brackets and clevises. It features a 1/8" port, an M8x1.25 male rod thread, and a 30 mm stroke. The built-in magnet (-S) supports CMSG, DMSG, and EMSG switches for position sensing. For light-duty vertical lifts, expect a safe working load of about 79 N (roughly 6.7 kg with a 2:1 margin).
Airtac MID Series Double Rod Mini Cylinder MID20X30S Technical Specifications
| Model | Airtac MID Series Double Rod Mini Cylinder MID20X30S |
|---|---|
| Series | MID ISO 6432 mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 30 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 MID20X30S
| MID | ISO 6432 round-body mini cylinder (double-rod). |
|---|---|
| 20 | Bore size in mm. |
| ×30 | 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 MID20X30S Is Used
Symmetric Shuttle Transfer
Moves small parts between stations with 131.9 N of equal force both ways, ensuring consistent push and pull without rotational drift.
Back-Rod Switch Tripping
Uses the extended rear rod to physically trigger an external limit switch or flag, leveraging the 30 mm stroke for precise timing.
Guided Pin Insertion
Presses pins with a steady 79 N safe working load, relying on the twin rod to resist side loads and prevent binding.
Is the Airtac MID Series Double Rod Mini Cylinder MID20X30S the Right Cylinder?
When sizing this double-rod unit, consider the adjacent bores: the smaller MID16 provides 86.4 N at 0.5 MPa, while the larger MID25 offers 206.1 N. The MID20X30S is ideal when you need 131.9 N of equal both-ways force and the anti-rotation benefit of a twin rod. The extended back rod is free to trip a switch, carry a stop, or drive a second load. Note that the fixed TPU bumper pads only decelerate the stroke end; they do not lock the piston. For holding a load on air loss, install an external rod lock or pilot check valve. Mounting options include LB foot, FA flange, and TC trunnion (the SDB pivot-block is unavailable for double-rod types).
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 MID20X30S FAQ
Because it is a double-rod cylinder, force is equal both ways: 131.9 N at 0.5 MPa, 184.7 N at 0.7 MPa, and a maximum of 26.9 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 cannot hold a load on air loss; the piston drifts, and the fixed TPU bumpers only decelerate the stroke end, so use an external rod lock for holding.
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