Airtac MI16-20 Stainless Steel Mini Cylinder MI20X55SCM
The AirTAC Airtac MI16-20 Stainless Steel Mini Cylinder MI20X55SCM is a genuine double acting round-body mini air cylinder with a Ø20mm bore and 55mm 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
- Stroke55 mm
- Port size1/8"
- Acting typeDouble acting
- Rod threadM8×1.25
- CushionFixed TPU bumper pads
About the Airtac MI16-20 Stainless Steel Mini Cylinder MI20X55SCM
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 stainless barrel and rod resist mild corrosion, giving it a real edge over painted alternatives in damp or washdown environments. The riveted construction keeps the body light, while fixed TPU bumper pads absorb impact at the stroke ends.
Thanks to the built-in piston magnet, this -S SKU supports CMSG, DMSG and EMSG switches for position sensing. The CM round rear cover offers a clean back-end profile for tight spaces. Plan for a safe working load of about 94 N (60 percent of the 0.5 MPa rating), which means it can lift roughly 8 kg vertically with a 2:1 safety margin. It operates at 30-800 mm/s and conforms to ISO 6432 mounting dimensions for easy bracket integration.
Airtac MI16-20 Stainless Steel Mini Cylinder MI20X55SCM Technical Specifications
| Model | Airtac MI16-20 Stainless Steel Mini Cylinder MI20X55SCM |
|---|---|
| Series | MI ISO 6432 mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 55 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 MI20X55SCM
| MI | ISO 6432 round-body mini cylinder (double-acting). |
|---|---|
| 20 | Bore size in mm. |
| ×55 | 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 MI20X55SCM Is Used
Diverting Small Packages
Pushes lightweight cardboard cartons on a packaging line using its 157 N thrust, with the stainless rod shrugging off humid warehouse air.
Clamping Aluminium Extrusions
Holds thin aluminium profiles in place for a sawing operation, where the 8 kg vertical lift capacity easily manages the part weight.
Lab Sample Ejection
Ejects processed fluid samples from a testing carousel, relying on the CM round end cover to fit neatly into the machine chassis.
Is the Airtac MI16-20 Stainless Steel Mini Cylinder MI20X55SCM the Right Cylinder?
When sizing this 20 mm bore, the smaller Ø16 generates 100.5 N of push at 0.5 MPa, while the larger Ø25 provides 245.3 N, letting you step up or down if your payload shifts. The 55 mm stroke is well within the 500 mm maximum, keeping rod bending stress low. Because this is a double-acting cylinder, air drives both directions, and the fixed TPU bumpers only decelerate the end of travel rather than holding the load. If your process requires the rod to stay put during a pressure drop or valve centre, add an external rod lock or a pilot-operated check valve.
The -S magnet enables CMSG, DMSG and EMSG sensors, and the CM round end cover dictates the rear mounting orientation. You can pair the front face with LB foot, FA flange, SDB pivot or TC trunnion brackets using the standard ISO 6432 interface.
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 MI20X55SCM FAQ
This 20 mm bore 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 of 32 kgf at 1.0 MPa.
No, the fixed TPU bumper pads only decelerate the piston near the stroke end and do not act as a brake. If the valve is centred or air is lost, the rod will drift. You must use an external rod lock or pilot check valve to hold a load securely.
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