Airtac MI16-20 Stainless Steel Mini Cylinder MI20X125U
The AirTAC Airtac MI16-20 Stainless Steel Mini Cylinder MI20X125U is a genuine double acting round-body mini air cylinder with a Ø20mm bore and 125mm 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
- Stroke125 mm
- Port size1/8"
- Acting typeDouble acting
- Rod threadM8×1.25
- CushionFixed TPU bumper pads
About the Airtac MI16-20 Stainless Steel Mini Cylinder MI20X125U
Delivering 157 N of push force at 0.5 MPa, this double-acting stainless-steel round-body mini cylinder handles a 125 mm stroke with a 1/8" port. The riveted barrel and rod shrug off mild corrosion, giving it a real edge over painted alternatives in damp production areas. Fixed TPU bumper pads absorb the impact at stroke extremes, decelerating the motion without the complexity of an adjustable cushion.
Because it conforms to the ISO 6432 mounting interface, the body drops directly into standard mini-cylinder brackets and clevises. Plan for roughly 94 N of actual work at 0.5 MPa to maintain a safe margin, which translates to lifting about 8 kg vertically. The rear U cover provides a 90-degree port orientation, simplifying hose routing in tight machine cells.
Airtac MI16-20 Stainless Steel Mini Cylinder MI20X125U Technical Specifications
| Model | Airtac MI16-20 Stainless Steel Mini Cylinder MI20X125U |
|---|---|
| Series | MI ISO 6432 mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 125 mm |
| Acting type | Double acting |
| 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 | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 157 N | 132 N |
| 0.7 MPa | 220 N | 185 N |
| Max (@1.0 MPa) | 32 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac MI16-20 Stainless Steel Mini Cylinder MI20X125U
| MI | ISO 6432 round-body mini cylinder (double-acting). |
|---|---|
| 20 | Bore size in mm. |
| ×125 | 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 MI16-20 Stainless Steel Mini Cylinder MI20X125U Is Used
Package Diverter Gate
Actuates a routing flap on a packaging line, using the 125 mm stroke to push cartons into a secondary lane without stalling the main belt.
Clamp Station
Secures aluminium extrusions during a sawing operation, applying steady clamping pressure well within its 8 kg vertical lift capacity.
Parts Ejector
Pushes stamped metal blanks out of a press die area, relying on the stainless build to resist cutting fluid mist and shop dampness.
Is the Airtac MI16-20 Stainless Steel Mini Cylinder MI20X125U the Right Cylinder?
When sizing this 20 mm bore, the smaller 16 mm option yields 100.5 N push at 0.5 MPa, while the larger 25 mm bore provides 245.3 N, letting you step up if the 125 mm stroke needs to shift heavier jigs. The U-style back cover orients the air line at 90 degrees, which is ideal when axial space is restricted. Since this specific SKU lacks the -S magnet, it cannot host CMSG, DMSG or EMSG position switches; add the -S variant if your cycle requires electronic end-of-stroke confirmation.
A standard double-acting cylinder drifts if air pressure drops or the valve is centred, as the bumpers only soften the end stops and act as neither a lock nor a brake. To suspend a vertical load safely during an emergency stop, integrate an external pilot-operated check valve or a dedicated rod lock.
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 MI16-20 Stainless Steel Mini Cylinder MI20X125U FAQ
At 0.5 MPa it provides 157 N push and 131.9 N pull. At 0.7 MPa it provides 219.8 N push and 184.7 N pull. The theoretical maximum force is 32 kgf at 1.0 MPa. The air port size is 1/8".
No, this specific SKU does not include a piston magnet, so CMSG, DMSG or EMSG switches will not function. You must select the -S magnet variant to enable position sensing. It uses the ISO 6432 mounting interface and fixed TPU bumper pads rather than an adjustable cushion.
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