Airtac MI16-20 Stainless Steel Mini Cylinder MI20X550SCM
The AirTAC Airtac MI16-20 Stainless Steel Mini Cylinder MI20X550SCM is a genuine double acting round-body mini air cylinder with a Ø20mm bore and 550mm 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
- Stroke550 mm
- Port size1/8"
- Acting typeDouble acting
- Rod threadM8×1.25
- CushionFixed TPU bumper pads
About the Airtac MI16-20 Stainless Steel Mini Cylinder MI20X550SCM
Delivering 157 N of push force at 0.5 MPa, this double-acting stainless-steel round-body mini cylinder handles demanding actuation with a 550 mm stroke. Because 550 mm exceeds the 500 mm maximum standard stroke for a Ø20 bore, this specific unit is manufactured as a non-standard, made-to-order configuration. The riveted stainless barrel and rod naturally resist mild corrosion and washdown, outperforming painted alternatives in damp environments.
It features a 1/8" air port and an M8x1.25 male rod thread. The built-in piston magnet (-S) directly supports CMSG, DMSG and EMSG reed or electronic switches for position sensing. Plan for roughly 94 N of actual work at 0.5 MPa, which translates to lifting about 8 kg vertically with a 2:1 safety margin. Fixed TPU bumper pads absorb stroke-end impact, while the round CM back cover dictates the rear mounting and port orientation.
Airtac MI16-20 Stainless Steel Mini Cylinder MI20X550SCM Technical Specifications
| Model | Airtac MI16-20 Stainless Steel Mini Cylinder MI20X550SCM |
|---|---|
| Series | MI ISO 6432 mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 550 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 MI20X550SCM
| MI | ISO 6432 round-body mini cylinder (double-acting). |
|---|---|
| 20 | Bore size in mm. |
| ×550 | 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 MI20X550SCM Is Used
Long-Reach Diverter
Pushes lightweight packages across a conveyor belt over the extended 550 mm travel distance, utilizing the 157 N push force and stainless construction for damp washdown zones.
Film Roll Feed
Actuates a packaging material feed arm with precise position detection via CMSG sensors, relying on the -S magnet to verify the full extension cycle.
Component Ejection
Ejects machined parts from an automated lathe, where the stainless barrel resists cutting fluid mist and the CM round end cover accommodates the rear pivot mount.
Is the Airtac MI16-20 Stainless Steel Mini Cylinder MI20X550SCM the Right Cylinder?
When sizing this actuator, the Ø16 bore below offers 100.5 N push at 0.5 MPa, whereas the Ø25 bore above provides 245.3 N, giving you clear force scaling if 157 N is borderline. Because this 550 mm stroke is a non-standard made-to-order length, carefully verify side-load conditions; a long 8 mm rod is susceptible to bending under off-center loads, so guiding the payload is critical. The ISO 6432 mounting interface on this Ø20 bore ensures it drops directly into standard mini-cylinder brackets and clevises.
The included -S magnet enables CMSG, DMSG and EMSG sensors, and the CM round end cover suits specific rear pivot or port orientations. Remember that venting the air or centering the valve causes the piston to drift; the TPU bumpers only decelerate the stroke end and do not function as a lock or brake. To suspend a load securely during air loss, integrate an external rod lock or a pilot-operated check valve into your circuit.
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 MI20X550SCM FAQ
This double-acting cylinder uses a 1/8" air port and generates 157 N push / 131.9 N pull at 0.5 MPa, and 219.8 N push / 184.7 N pull at 0.7 MPa. The theoretical maximum force is 32 kgf at 1.0 MPa. Note that the 550 mm stroke is a non-standard, made-to-order length exceeding the 500 mm standard maximum.
The -S magnet allows direct mounting of CMSG, DMSG and EMSG switches for position detection. However, the fixed TPU bumper pads only decelerate the piston at stroke end; they do not lock or hold the load. If air is lost or the valve is centered, the rod will drift, so you must use an external rod lock or pilot check valve for vertical load holding.
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