Airtac MI16-20 Stainless Steel Mini Cylinder MI20X25SCM
The AirTAC Airtac MI16-20 Stainless Steel Mini Cylinder MI20X25SCM 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 MI20X25SCM
Delivering 157 N of push force at 0.5 MPa, this double-acting stainless-steel round-body mini cylinder handles short 25 mm strokes with precision. The riveted construction uses a stainless barrel and rod, giving it a genuine edge over painted alternatives in damp or washdown settings. Because it follows ISO 6432 mounting dimensions, it drops directly into standard mini-cylinder brackets and clevises.
The built-in magnet allows CMSG, DMSG or EMSG switches to track piston position, while the CM round end cover neatly tucks the rear ports away. Fixed TPU bumper pads absorb the impact at stroke extremes. For real-world sizing, plan for roughly 94 N of usable work at 0.5 MPa, which equates to safely lifting an 8 kg part vertically with a 2:1 margin.
Airtac MI16-20 Stainless Steel Mini Cylinder MI20X25SCM Technical Specifications
| Model | Airtac MI16-20 Stainless Steel Mini Cylinder MI20X25SCM |
|---|---|
| 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 MI20X25SCM
| 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 MI20X25SCM Is Used
Short-Stroke Clamping
Ideal for locking small aluminium extrusions in a CNC machining fixture, using the 157 N push force to secure the part without deflecting it.
Pouch Deflection
Perfect for pushing packaging film guides on a vertical form-fill-seal machine, where the stainless body survives daily washdowns.
Bin Gate Actuation
Handles the quick 25 mm movement needed to open and close small gravity-fed parts dispensers, lifting roughly 8 kg of component weight safely.
Is the Airtac MI16-20 Stainless Steel Mini Cylinder MI20X25SCM the Right Cylinder?
When sizing this 20 mm bore, the smaller Ø16 generates 100.5 N of push at 0.5 MPa, whereas stepping up to the Ø25 yields 245.3 N. This model hits a sweet spot for moderate push tasks. Remember that venting the air supply causes the piston to drift, as the TPU pads only soften stroke-end impacts rather than locking the rod; use a pilot check valve if you need to suspend a load. The 1/8" port and M8x1.25 rod thread match standard 20 mm fittings.
With a short 25 mm stroke, side-load stress on the 8 mm rod is minimal, but always ensure the front pivot is aligned to prevent premature seal wear. The CM back cover orientation suits tight installations where axial porting is preferred.
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 MI20X25SCM 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".
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 is lost; the piston drifts. The fixed TPU bumpers only decelerate the stroke end, so you need an external rod lock for holding.
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