Airtac MI16-20 Stainless Steel Mini Cylinder MI20X45SCM
The AirTAC Airtac MI16-20 Stainless Steel Mini Cylinder MI20X45SCM is a genuine double acting round-body mini air cylinder with a Ø20mm bore and 45mm 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
- Stroke45 mm
- Port size1/8"
- Acting typeDouble acting
- Rod threadM8×1.25
- CushionFixed TPU bumper pads
About the Airtac MI16-20 Stainless Steel Mini Cylinder MI20X45SCM
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 operates on 1/8" ports and features a Ø8 mm piston rod with an M8x1.25 male thread. A built-in piston magnet is included for position sensing, and the rear CM round end cover offers a clean, axial port and mounting orientation. The riveted stainless construction resists mild corrosion, giving it a real edge over painted alternatives in damp or washdown environments.
Because it conforms to ISO 6432 mounting dimensions, this unit drops directly into standard mini-cylinder brackets and clevises. Fixed TPU bumper pads absorb impact at the stroke extremes, though they decelerate rather than act as a lock. For real-world sizing, plan for a safe working load of about 94 N, which means it can comfortably lift an 8 kg part vertically with a 2:1 safety margin.
Airtac MI16-20 Stainless Steel Mini Cylinder MI20X45SCM Technical Specifications
| Model | Airtac MI16-20 Stainless Steel Mini Cylinder MI20X45SCM |
|---|---|
| Series | MI ISO 6432 mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 45 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 MI20X45SCM
| MI | ISO 6432 round-body mini cylinder (double-acting). |
|---|---|
| 20 | Bore size in mm. |
| ×45 | 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 MI20X45SCM Is Used
Package Diverter Gate
Actuates a lightweight routing flap on a packaging line, using the 157 N push force to redirect small cartons at high speed without stalling.
Textile Loom Tensioner
Maintains thread tension in a humid textile facility, where the stainless steel barrel and rod prevent mild corrosion that would degrade standard cylinders.
Bin Lid Actuation
Opens and closes access hatches on material bins, taking advantage of the CM round end cover and ISO 6432 dimensions for simple clevis mounting.
Is the Airtac MI16-20 Stainless Steel Mini Cylinder MI20X45SCM the Right Cylinder?
When sizing this 20 mm bore, stepping down to a Ø16 variant drops the 0.5 MPa push force to roughly 100 N, while moving up to a Ø25 increases it to 245 N. If your process requires the piston to stay put after a loss of air pressure or when a valve is centred, this standard cylinder will drift; you should specify an external rod lock or a pilot-operated check valve to hold the load securely. The included -S magnet allows seamless fitting of CMSG, DMSG or EMSG reed and electronic switches.
The 45 mm stroke is well within the 500 mm maximum for this bore, keeping the rod bending risk low. You can mount the body using LB foot brackets, FA flanges, SDB pivot blocks or TC trunnions to suit your frame layout.
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 MI20X45SCM FAQ
At 0.5 MPa it provides 157 N push and 131.9 N pull. At 0.7 MPa it provides 219.8 N push and 184.7 N pull. The theoretical maximum force is 32 kgf at 1.0 MPa. The air port size is 1/8" and the male rod thread is M8x1.25.
No, the base MI uses fixed TPU bumper pads that merely decelerate the stroke end; it does not have an adjustable air cushion (look at the MIC variant for that). Additionally, the piston will drift if air is lost or the valve is centred, so an external rod lock or pilot check valve is required for load holding.
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