Airtac MI16-20 Stainless Steel Mini Cylinder MI20X425SCA
The AirTAC Airtac MI16-20 Stainless Steel Mini Cylinder MI20X425SCA is a genuine double acting round-body mini air cylinder with a Ø20mm bore and 425mm 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
- Stroke425 mm
- Port size1/8"
- Acting typeDouble acting
- Rod threadM8×1.25
- CushionFixed TPU bumper pads
About the Airtac MI16-20 Stainless Steel Mini Cylinder MI20X425SCA
Delivering 157 N of push force at 0.5 MPa, this double-acting stainless-steel round-body mini cylinder handles robust actuation tasks. The Ø20 mm bore operates on a 1/8" port, and the 425 mm stroke falls well within the 500 mm standard limit for this size. Its stainless barrel and rod shrug off mild corrosion, giving it a real edge over painted alternatives in damp or washdown-prone environments. Riveted construction keeps the body compact, while fixed TPU bumper pads absorb the impact at stroke extremes without offering adjustable cushioning.
Because the piston travels a lengthy 425 mm, plan for a safe working load of roughly 94 N—about 60 percent of the 0.5 MPa push rating—to account for friction and dynamics. In vertical setups, this translates to lifting around 8 kg safely with a 2:1 margin. The built-in magnet (-S) supports CMSG, DMSG and EMSG position switches, and the rear CA clevis mount allows pivoting articulation.
Airtac MI16-20 Stainless Steel Mini Cylinder MI20X425SCA Technical Specifications
| Model | Airtac MI16-20 Stainless Steel Mini Cylinder MI20X425SCA |
|---|---|
| Series | MI ISO 6432 mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 425 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 MI20X425SCA
| MI | ISO 6432 round-body mini cylinder (double-acting). |
|---|---|
| 20 | Bore size in mm. |
| ×425 | 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 MI20X425SCA Is Used
Diverting Gate Actuation
Uses the CA pivot mount to swing a sorting flap on a packaging line, relying on the 157 N push force at 0.5 MPa to redirect cartons reliably.
Vertical Parts Elevator
Lifts lightweight metal trays weighing up to 8 kg through a 425 mm vertical path, benefiting from the stainless construction in humid factory zones.
Textile Machine Tensioning
Maintains tension on fabric webs with a smooth 425 mm stroke, using the DMSG sensors enabled by the -S magnet to confirm material feed positions.
Is the Airtac MI16-20 Stainless Steel Mini Cylinder MI20X425SCA the Right Cylinder?
When sizing this unit, the Ø16 mm bore below offers 100.5 N of push at 0.5 MPa, whereas the Ø25 mm bore above steps up to 245.3 N. Choose this Ø20 mm model when your application requires roughly 131.9 N of pull force at 0.5 MPa alongside a long 425 mm reach. The CA rear pivot cover is ideal for mechanisms requiring angular rod alignment during travel. Since this SKU includes the -S magnet, you can directly mount CMSG, DMSG or EMSG sensors for end-of-stroke detection.
Keep in mind that a standard double-acting cylinder drifts if air pressure drops or the valve is centred; the TPU bumpers only soften the end-of-stroke impact and will not brake or hold the load. For vertical or suspended loads that must remain in place during a loss of air, incorporate an external rod lock or a pilot-operated check valve. Additionally, at 425 mm of extension, the Ø8 mm rod is susceptible to bending forces—ensure the load moves along a guided track to prevent side-loading damage.
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 MI20X425SCA FAQ
This Ø20 mm bore cylinder features a 1/8" port and an M8x1.25 male rod thread. The double-acting thrust outputs are 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; they are not an adjustable air cushion, nor do they act as a brake. The cylinder will drift if air is lost, so an external rod lock or pilot check valve is required for vertical load holding. The stainless riveted body uses the ISO 6432 mounting interface for standard mini-cylinder brackets.
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