S-G4600 Potting Machine Buyer Guide by Southern Machinery

What is the S-G4600 Fully Automatic Potting Machine used for? The S-G4600 by Southern Machinery is a fully automatic two-component potting machine that meters, mixes and dispenses adhesives such as epoxy resin, polyurethane and electronic silicone along programmed trajectories. It combines mixing, potting and trajectory-based potting in one automatic cell, with a mixing ratio adjustable from 1:1 to 10:1 per the source datasheet.

Why does a "good enough" potting step quietly cost you the most?

Potting is the last wet process on many boards, and it is where upstream quality gets locked in or ruined. A bubble, a dripped line or a wrong mix ratio cannot be reworked once the compound cures.

Most teams do not see this loss on a report. It hides as manual mixing of whole batches, adhesive thrown away when it cures in the pot, and operators who must stay at the bench. If that sounds like your line, the problem is the process, not the people.

How do you judge any potting machine? A four-question framework

Use these questions before comparing quotes:

1. Material fit: Does it handle your adhesive type, viscosity and filler content?
2. Ratio control: How is the A/B ratio set, and what is the stated metering accuracy?
3. Path flexibility: Can it follow your part shape, not only drop dots?
4. Waste and uptime: What stops curing in the hoses, and how does it clean itself?

Score each answer against your own product. The rest of this guide applies the four questions to the S-G4600.

Which adhesives and ratios can the S-G4600 handle?

According to the source document, the machine suits two-component adhesives including epoxy resin, polyurethane, electronic silicone, electronic potting compound and liquid silicone. Filler particle size should be above 200 μm, and filler ratio below 50% of total adhesive volume.

Selectable mixing ratios are 1:1, 1:2, 1:3, 1:4, 1:5 and 1:10, set by choosing different metering pumps. Static or dynamic mixing can be used.

One point to confirm: the source lists viscosity as "within 50,000 cps" in one section and "MAX ≤ 5000 cps" in the technical table. Confirm the correct limit for your compound with Southern Machinery before ordering.

How does it keep ratio and dispensing accurate?

The datasheet states metering and mixing ratio accuracy of ±3% and dispensing accuracy of ±3%, with dispensing speed from 1 g/sec to 20 g/sec. It describes a proprietary control system that is not affected by air pressure, to avoid uneven output, stringing and bubbles.

Mixing happens on demand while dispensing, so only the adhesive needed is mixed. A and B glue sit in separate tanks, which prevents curing during long storage. A pulse-coefficient setting wizard helps adapt to different adhesive types and brands.

What potting paths and modes can it run?

The machine supports dots, lines, surfaces, arcs, circles, irregular curves, continuous interpolation and three-axis linkage, which suits irregular workpieces. Programs are stored on a large-capacity hard disk, and the software supports area array, translation and rotation calculation.

You can dispense A only, B only or AB glue quantitatively, or dispense manually. A multi-stage mode allows up to five stages, each with its own glue output and speed.

How does it reduce waste and downtime?

• Level sensors on the tanks alarm for shortage or full level, and the machine stops automatically when material is insufficient.
• An anti-curing program protects pipelines and valve bodies when potting pauses.
• Intelligent automatic cleaning offers several modes, and a solvent recycling system improves solvent utilization.
• Automatic loading and suction reduce manual loading time.
• Output counting, single-piece timing, operation monitoring and alarms are included.
• Optional heating and a reserved vacuum degassing function suit different processes; pump blockage detection and flow monitoring are reserved options.

Key specifications for selection

| Item | Source specification |

|---|---|

| X / Y / Z working range | 600 / 800 / 100 mm |

| Repeat positioning accuracy | ±0.05 mm |

| Maximum speed | 300 mm/sec |

| Dispensing speed | 1 g/sec – 20 g/sec |

| Tanks | A 30 L, B 30 L, cleaning 5 L (stainless steel pressure tanks) |

| Dimensions (L×W×H) | 1480 × 1200 × 1700 mm, approx. 400 kg |

| Power / air | AC220V / 50Hz; 0.5–0.7 MPa |

| Environment | 0–40°C; humidity 20–91% |

| Total power | calculated by configuration |

Where does it fit in a PCB assembly line?

Potting normally follows assembly, soldering and inspection. Plan the cell next to your board handling systems and your THT equipment, and check the upstream inspection options. Conveyor interface details are not specified in source — contact Southern Machinery to confirm.

How should you estimate the return?

ROI formula (example only, depending on configuration and subject to final technical confirmation):

Payback (months) = Machine investment ÷ (Monthly labor saving + Monthly adhesive waste saving + Monthly rework saving)

Illustrative example with your own numbers: if investment is X and monthly savings total Y, payback is X ÷ Y. No ROI is guaranteed; the inputs depend on your adhesive, volume and current process.

Frequently asked questions

Does the S-G4600 mix on demand? Yes. The source states mixing is performed while dispensing to save adhesive.

What mixing ratios are available? 1:1, 1:2, 1:3, 1:4, 1:5 and 1:10 by selecting different metering pumps.

Can it pot irregular parts? The source says it supports multiple path types including irregular curves and three-axis linkage.

Is heating available? Heating is optional, according to adhesive data.

What support comes with it? The source lists 7x24 worldwide support, free installation and training, 1-day lead-time for spare parts and a 1-month customized solution.

What should you read next?

Southern Machinery, founded in 2011 in Shenzhen and serving 237+ global customers, publishes buyer guides across SMT, THT, wave soldering, board handling and inspection. Next up in this series: the S-G990 semi-automatic potting machine and how it compares for lower-volume work. Browse more at auto insertion equipment.

Ready to check fit for your product?

Send your adhesive datasheet and part drawing through get a quote or contact us and the team will confirm configuration.