Airtac MI16-20 Stainless Steel Mini Cylinder MI20X40CM
The AirTAC Airtac MI16-20 Stainless Steel Mini Cylinder MI20X40CM 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 MI20X40CM
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, while the rear CM round end provides a clean, versatile mounting footprint for tight spaces. Its riveted stainless barrel and rod resist mild corrosion, outperforming painted alternatives in damp or washdown settings.
Designed for a 40 mm travel range, the fixed TPU bumper pads absorb end-of-stroke impact without offering adjustable cushioning. Because this SKU lacks the -S magnet, it cannot host CMSG or DMSG reed switches. In practical terms, you can expect a safe working load of roughly 94 N, or the ability to lift about 8 kg vertically with a 2:1 safety margin.
Airtac MI16-20 Stainless Steel Mini Cylinder MI20X40CM Technical Specifications
| Model | Airtac MI16-20 Stainless Steel Mini Cylinder MI20X40CM |
|---|---|
| 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 MI20X40CM
| 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 MI20X40CM Is Used
Component Ejection
Pushes small stamped metal parts out of a press die using 157 N of force, relying on the 40 mm stroke for a rapid, short ejection cycle.
Flap Folding
Folds corrugated cardboard flaps on a compact packaging line where the stainless steel barrel resists humidity and washdown spray.
Gate Diverting
Actuates a lightweight routing gate on a conveyor system, utilizing the CM round end cover for straightforward rear pivot mounting.
Is the Airtac MI16-20 Stainless Steel Mini Cylinder MI20X40CM the Right Cylinder?
When sizing this 20 mm bore, stepping down to the Ø16 variant reduces the push force to 100.5 N at 0.5 MPa, whereas moving up to the Ø25 bore increases it to 245.3 N. The 1/8" port and M8x1.25 rod thread are fixed for this size, and the CM round back cover dictates the rear mounting orientation. With its 40 mm stroke, side-load stress on the rod remains minimal, but always verify alignment.
Keep in mind that a standard double-acting cylinder will drift if air pressure drops or the valve is centered—the TPU bumpers only decelerate the stroke end and do not function as a locking brake. If your application requires strict position holding, integrate an external pilot-operated check valve or a dedicated rod lock.
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 MI20X40CM FAQ
This double-acting cylinder uses a 1/8" port and generates a push force of 157 N and a pull force of 131.9 N at 0.5 MPa. At 0.7 MPa, the push increases to 219.8 N and the pull to 184.7 N. The theoretical maximum force is 32 kgf at 1.0 MPa.
No, this specific SKU does not include the -S magnet option, so it cannot support CMSG, DMSG, or EMSG switches. You would need the -S variant for position sensing. It features fixed TPU bumper pads for deceleration and conforms to ISO 6432 mounting dimensions for standard brackets.
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