Airtac MI16-20 Stainless Steel Mini Cylinder MI20X250SCM
The AirTAC Airtac MI16-20 Stainless Steel Mini Cylinder MI20X250SCM is a genuine double acting round-body mini air cylinder with a Ø20mm bore and 250mm 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
- Stroke250 mm
- Port size1/8"
- Acting typeDouble acting
- Rod threadM8×1.25
- CushionFixed TPU bumper pads
About the Airtac MI16-20 Stainless Steel Mini Cylinder MI20X250SCM
Delivering 157 N of push force at 0.5 MPa, this double-acting stainless-steel round-body mini cylinder handles a 250 mm stroke with ease. The Ø20 mm bore uses a 1/8" port and an M8x1.25 male rod thread. Its riveted stainless barrel and rod shrug off mild corrosion, giving it a real edge over painted alternatives in damp or washdown settings. The built-in magnet (-S) directly supports CMSG, DMSG and EMSG switches for position sensing.
Because the theoretical thrust hits 32 kgf at 1.0 MPa, you should plan for a real working load of about 94 N at 0.5 MPa. That translates to safely lifting an 8 kg part vertically with a 2:1 margin. Fixed TPU bumper pads absorb the impact at stroke extremes, and the round CM back cover keeps the rear port orientation clean for tight machinery layouts.
Airtac MI16-20 Stainless Steel Mini Cylinder MI20X250SCM Technical Specifications
| Model | Airtac MI16-20 Stainless Steel Mini Cylinder MI20X250SCM |
|---|---|
| Series | MI ISO 6432 mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 250 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 MI20X250SCM
| MI | ISO 6432 round-body mini cylinder (double-acting). |
|---|---|
| 20 | Bore size in mm. |
| ×250 | 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 MI20X250SCM Is Used
Package Diverting Gate
Actuates a routing flap on a packaging line, using the 157 N push force to redirect cartons weighing up to 8 kg at speeds up to 800 mm/s.
Pouch Sealing Press
Closes a sealing jaw over flexible film, relying on the stainless steel construction to withstand occasional washdowns in a food-packing environment.
Small Part Ejector
Pushes machined plastic components out of a fixture along the 250 mm stroke, using the CMSG sensor to confirm the ejection cycle.
Is the Airtac MI16-20 Stainless Steel Mini Cylinder MI20X250SCM the Right Cylinder?
When sizing this unit, the neighbouring Ø16 bore offers 100.5 N push at 0.5 MPa, while stepping up to the Ø25 yields 245.3 N, giving you clear scaling if your payload shifts. The 250 mm stroke is well within the 500 mm maximum for this bore, though at full extension you should watch for side loads to avoid rod bending. The ISO 6432 mounting interface lets you drop this cylinder straight into standard mini-cylinder brackets and clevises.
Remember that a standard double-acting cylinder drifts when air is lost or the valve centres, as the TPU pads only soften the end of travel rather than locking the rod. To suspend a load safely mid-stroke, fit an external rod lock or a pilot-operated check valve.
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 MI20X250SCM FAQ
This Ø20 mm bore cylinder features a 1/8" port and an M8x1.25 rod thread. It generates 157 N push and 131.9 N pull at 0.5 MPa, 219.8 N push and 184.7 N pull at 0.7 MPa, with a theoretical maximum force of 32 kgf at 1.0 MPa.
No, the piston will drift if air is lost or the valve is centred. The fixed TPU bumper pads only decelerate the rod near the stroke end and do not act as a brake. To hold a vertical load, you must add an external rod lock or a pilot-operated check valve.
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