Airtac MI16-20 Stainless Steel Mini Cylinder MI20X40SCM
The AirTAC Airtac MI16-20 Stainless Steel Mini Cylinder MI20X40SCM 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 MI20X40SCM
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" port and an M8x1.25 male rod thread. Its riveted stainless barrel and rod resist mild corrosion, outperforming painted alternatives in damp or washdown environments. Fixed TPU bumper pads absorb stroke-end impact, while the built-in magnet supports position sensing.
For practical sizing, plan for a safe working load of roughly 94 N, which translates to lifting about an 8 kg mass vertically with a 2:1 safety margin. The CM round end cover provides a clean rear finish for straightforward mounting. Because the piston magnet is present, you can directly mount CMSG, DMSG, or EMSG switches for precise end-of-stroke detection.
Airtac MI16-20 Stainless Steel Mini Cylinder MI20X40SCM Technical Specifications
| Model | Airtac MI16-20 Stainless Steel Mini Cylinder MI20X40SCM |
|---|---|
| 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 MI20X40SCM
| 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 MI20X40SCM Is Used
Package Diverting Gate
Actuates a lightweight routing flap on a packaging conveyor, using the 157 N push force to redirect small cartons at high speeds.
Component Ejection Press
Pushes stamped metal parts out of a die station, relying on the fixed TPU bumpers to absorb the end-of-stroke impact safely.
Vertical Parts Lift
Raises small plastic totes in a classification machine, lifting roughly 8 kg loads vertically using the safe working margin.
Is the Airtac MI16-20 Stainless Steel Mini Cylinder MI20X40SCM the Right Cylinder?
When sizing this 40 mm stroke unit, compare it against adjacent bores: the smaller Ø16 generates 100.5 N of push at 0.5 MPa, whereas the larger Ø25 provides 245.3 N. Choose the Ø20 when your application requires approximately 157 N of push force. The 1/8" porting matches the bore's flow requirements perfectly. If your machine experiences air loss or the directional valve is centred, this cylinder will drift and cannot hold position—the TPU bumpers only decelerate the stroke end, so add an external rod lock or pilot check valve for suspended loads.
The built-in magnet allows seamless integration of CMSG, DMSG, or EMSG sensors without extra hardware. Utilising the ISO 6432 mounting interface, the body drops directly into standard mini-cylinder brackets and clevises. With a 40 mm stroke, side-load stress on the Ø8 mm piston rod remains minimal, but ensure front mounting alignment to prevent premature seal wear.
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 MI20X40SCM FAQ
This double-acting cylinder features a 1/8" port and an M8x1.25 male 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.
It cannot hold a load on its own; if air is lost the piston drifts, so you need an external rod lock or pilot check valve for suspended loads. The built-in magnet allows CMSG, DMSG, and EMSG switches to detect position, and the body uses standard ISO 6432 mounting dimensions.
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