Airtac MI16-20 Stainless Steel Mini Cylinder MI20X40SR
The AirTAC Airtac MI16-20 Stainless Steel Mini Cylinder MI20X40SR is a genuine double acting round-body mini air cylinder with a Ø20mm bore and 40mm 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
- Stroke40 mm
- Port size1/8"
- Acting typeDouble acting
- Rod threadM8×1.25
- CushionFixed TPU bumper pads
About the Airtac MI16-20 Stainless Steel Mini Cylinder MI20X40SR
Delivering 157 N of push force at 0.5 MPa, this double-acting stainless-steel round-body mini cylinder handles compact automation with ease. The Ø20 mm bore uses a 1/8 inch port and an M8x1.25 male rod thread. Its stainless barrel and rod resist mild corrosion, giving it a real edge over painted alternatives in damp or washdown environments.
Featuring a 40 mm stroke, the riveted construction keeps the body light while fixed TPU bumper pads absorb end-of-stroke impact. Because it yields about 94 N of usable work at 0.5 MPa, you can expect it to lift roughly 8 kg vertically with a 2:1 safety margin. The built-in magnet supports CMSG, DMSG and EMSG switches for precise position sensing.
Airtac MI16-20 Stainless Steel Mini Cylinder MI20X40SR Technical Specifications
| Model | Airtac MI16-20 Stainless Steel Mini Cylinder MI20X40SR |
|---|---|
| Series | MI ISO 6432 mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 40 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 MI20X40SR
| MI | ISO 6432 round-body mini cylinder (double-acting). |
|---|---|
| 20 | Bore size in mm. |
| ×40 | 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 MI20X40SR Is Used
Package Diverter Gate
Actuates a lightweight routing flap on a packaging conveyor, utilizing the 157 N push force to redirect small cartons at high speeds.
Lab Sample Ejector
Ejects processed sample trays from a testing station, where the stainless steel construction prevents corrosion in humid laboratory environments.
Small Part Clamp
Secures plastic housings during an ultrasonic welding process, relying on the 40 mm stroke and TPU bumpers for gentle, repeatable clamping.
Is the Airtac MI16-20 Stainless Steel Mini Cylinder MI20X40SR the Right Cylinder?
When sizing this 157 N (at 0.5 MPa) unit, consider the Ø16 bore if your application only requires 100.5 N of push, or step up to the Ø25 bore for 245.3 N. This model includes the R axial-in rear cover port orientation, alongside standard LB foot, FA flange, SDB pivot and TC trunnion mounts. The ISO 6432 mounting interface ensures it drops directly into standard mini-cylinder brackets.
Remember that a plain cylinder drifts when air is lost or the valve is centred; the TPU bumpers only decelerate the stroke end and do not act as a lock. For vertical loads, install an external rod lock or pilot-operated check valve. The short 40 mm stroke minimizes rod bending, but always verify side-load limits.
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 MI20X40SR FAQ
This Ø20 mm bore cylinder features a 1/8 inch port. 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.
Yes, the -S suffix indicates a built-in piston magnet compatible with CMSG, DMSG and EMSG switches. For impact absorption, it uses fixed TPU bumper pads that decelerate the piston at stroke end; it does not feature an adjustable air cushion.
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1-Year Warranty
Covers non-human-caused product damage.
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