Airtac MI16-20 Stainless Steel Mini Cylinder MI20X15SR
The AirTAC Airtac MI16-20 Stainless Steel Mini Cylinder MI20X15SR is a genuine double acting round-body mini air cylinder with a Ø20mm bore and 15mm 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
- Stroke15 mm
- Port size1/8"
- Acting typeDouble acting
- Rod threadM8×1.25
- CushionFixed TPU bumper pads
About the Airtac MI16-20 Stainless Steel Mini Cylinder MI20X15SR
Delivering 157 N of push force at 0.5 MPa, this double-acting stainless-steel round-body mini cylinder handles compact automation tasks with ease. The 20 mm bore features a 1/8" port and an M8x1.25 male rod thread. Its stainless barrel and piston rod naturally resist mild corrosion, giving it a distinct advantage over painted alternatives in damp or washdown environments. The riveted construction remains light, while fixed TPU bumper pads absorb impact at the stroke ends.
Because the 15 mm stroke is so short, the piston completes its travel rapidly, making the end-of-stroke deceleration of those bumper pads highly valuable. For position feedback, the integrated -S magnet supports CMSG, DMSG, and EMSG switches. In practical terms, you can expect a safe working load of about 94 N at 0.5 MPa, which means it can reliably lift an 8 kg part vertically with a 2:1 safety margin.
Airtac MI16-20 Stainless Steel Mini Cylinder MI20X15SR Technical Specifications
| Model | Airtac MI16-20 Stainless Steel Mini Cylinder MI20X15SR |
|---|---|
| Series | MI ISO 6432 mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 15 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 MI20X15SR
| MI | ISO 6432 round-body mini cylinder (double-acting). |
|---|---|
| 20 | Bore size in mm. |
| ×15 | 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 MI20X15SR Is Used
Short-Stroke Part Clamping
Ideal for securing aluminium workpieces in a CNC machining fixture, utilizing the 15 mm stroke to rapidly clamp and release parts without consuming valuable machine envelope.
Package Diverting Gate
Deployed on packaging lines to actuate a short diverter gate, using the 157 N push force to nudge lightweight cardboard cartons onto an adjacent belt.
Bin Lid Actuation
Automates the opening and closing of small parts bin lids in distribution centers, where the stainless construction holds up well against dusty and occasionally damp conditions.
Is the Airtac MI16-20 Stainless Steel Mini Cylinder MI20X15SR the Right Cylinder?
When sizing this actuator, consider the neighbouring bores: stepping down to the Ø16 MI yields 100.5 N of push at 0.5 MPa, while moving up to the Ø25 MI provides 245.3 N. This Ø20 model sits perfectly in the middle for medium-duty clamping or lifting. It features the R axial-in port on the back cover, which helps route hoses cleanly in tight spaces, and accepts standard LB foot, FA flange, SDB pivot, and TC trunnion brackets via its ISO 6432 mounting interface.
Remember that a standard double-acting cylinder like this relies entirely on continuous air pressure to maintain its position. If air is lost or the directional valve is centred, the piston will drift; the TPU bumpers only soften the stroke end and do not function as a locking brake. To suspend a load safely during an emergency stop, fit an external rod lock or a pilot-operated check valve.
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 MI20X15SR FAQ
The 20 mm bore operates on a 1/8" port with an M8x1.25 rod thread. At 0.5 MPa it provides 157 N push and 131.9 N pull. At 0.7 MPa, the push is 219.8 N and the pull is 184.7 N. The theoretical maximum force is 32 kgf at 1.0 MPa.
Yes, the -S suffix denotes a built-in piston magnet, allowing you to mount CMSG, DMSG, or EMSG electronic or reed switches directly to the cylinder body. The R back cover features an axial-in port, meaning the rear air supply connects straight along the cylinder axis to save space, while the body conforms to ISO 6432 mounting dimensions for standard mini-cylinder brackets.
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