Airtac MI16-20 Stainless Steel Mini Cylinder MI20X25SUTC
The AirTAC Airtac MI16-20 Stainless Steel Mini Cylinder MI20X25SUTC is a genuine double acting round-body mini air cylinder with a Ø20mm bore and 25mm 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
- Stroke25 mm
- Port size1/8"
- Acting typeDouble acting
- Rod threadM8×1.25
- CushionFixed TPU bumper pads
About the Airtac MI16-20 Stainless Steel Mini Cylinder MI20X25SUTC
Delivering 157 N of push force at 0.5 MPa, this AirTAC MI20X25SUTC mini cylinder is a double-acting actuator built for compact automation. The stainless-steel round barrel and piston rod shrug off mild corrosion, giving it a real edge over painted alternatives in damp or washdown settings. Riveted construction keeps the body light, while fixed TPU bumper pads decelerate the stroke end to absorb impact. The built-in magnet (-S) supports CMSG, DMSG and EMSG switches for position sensing.
With a 1/8" port and an 8 mm rod, this 20 mm bore model generates 131.9 N of pull force at 0.5 MPa. For actual moving tasks, plan for roughly 94 N of safe work rather than the absolute maximum. This translates to lifting about 8 kg vertically with a 2:1 safety margin, letting you match the cylinder to real part weights. The 25 mm stroke provides quick, short linear motion within strict spatial limits.
Airtac MI16-20 Stainless Steel Mini Cylinder MI20X25SUTC Technical Specifications
| Model | Airtac MI16-20 Stainless Steel Mini Cylinder MI20X25SUTC |
|---|---|
| Series | MI ISO 6432 mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 25 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 MI20X25SUTC
| MI | ISO 6432 round-body mini cylinder (double-acting). |
|---|---|
| 20 | Bore size in mm. |
| ×25 | 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 MI20X25SUTC Is Used
Package Diverter Gate
Snaps a short 25 mm stroke to flick small cardboard cartons off a packaging line, using the 157 N push force to overcome side friction.
Clamp Actuator
Secures lightweight aluminium extrusions in a CNC machining fixture, applying 94 N of safe clamping work without distorting the part.
Lab Sample Ejector
Pushes prepared microscope slides out of a staining carousel, where the stainless rod resists mild chemical humidity and the U cover keeps ports tidy.
Is the Airtac MI16-20 Stainless Steel Mini Cylinder MI20X25SUTC the Right Cylinder?
When sizing this 20 mm bore actuator, compare it against its neighbours: a 16 mm bore yields 100.5 N of push, while stepping up to 25 mm provides 245.3 N at 0.5 MPa. This SKU includes a TC trunnion mount and a U 90-degree back cover, offering pivot flexibility and side-port orientation for tight machinery layouts. The -S magnet enables electronic or reed sensors, whereas a plain SKU cannot take a switch.
Because the standard MI relies on fixed TPU bumpers rather than an adjustable cushion, it cannot hold a load if air pressure drops or the valve is centred. The piston will drift under force. For vertical or suspended loads that must remain fixed during a failure, specify an external rod lock or a pilot-operated check valve. The short 25 mm stroke also minimizes rod-bending side loads, keeping the guide bearing stress low.
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 MI20X25SUTC FAQ
This 20 mm bore cylinder uses a 1/8" port. It generates 157 N push and 131.9 N pull at 0.5 MPa, or 219.8 N push and 184.7 N pull at 0.7 MPa. The theoretical maximum force is 32 kgf at 1.0 MPa.
No to both. It uses fixed TPU bumper pads that merely decelerate the stroke end, not an adjustable air cushion. It also lacks a locking mechanism; if air is lost, the piston drifts. Use an external rod lock or pilot check valve to hold suspended loads.
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