S-TO4000 Tunnel Oven by Southern Machinery — Inline Infrared Drying for PCB Assembly

Batch ovens force you to rack, bake and re-handle product between stations. The S-TO4000 tunnel oven carries assemblies continuously through an infrared heating chamber on an 800 mm mesh belt, so drying and curing run inline.

What the S-TO4000 Is

A conveyorized tunnel oven (tunnel furnace) that combines infrared heating tubes, a mesh-belt transport system, a cylinder-type cover, a viewing screen and an integrated UPS in a single frame. The 200 kg belt capacity handles loaded pallets or fixtures, and dimensions can be customized to fit your line layout.

Verified Specifications

| Parameter | Value |

|---|---|

| Model | S-TO4000 |

| External size | 4000 x 1020 x 1100 mm |

| Chamber size | 2500 x 800 x 750 mm |

| Heating | Infrared heating tube |

| Total power | approx. 10 kW |

| Temperature | 150–190 °C |

| Load weight | approx. 200 kg |

| Mesh belt width | 800 mm |

| In / out port | 1000 mm / 500 mm |

| Power supply | 3-phase 220 V |

| Insulation | 100 K rock wool, 60 mm |

| Safety & control | 3 emergency stops, phase-sequence protector, viewing screen, UPS |

| Transport frame | 100 x 100 mm tube, screw tensioning |

Values as published on the S-TO4000 product page; confirm the process window for your material before ordering.

Where It Fits in Your Line

Its typical roles are continuous drying and curing stages — after cleaning, or after a dispensing or coating station — where product moves straight from the previous machine into the heated chamber. Dwell time is set by belt travel and chamber length rather than by an operator's rack rhythm, so output is paced by the line. The 3-phase 220 V, ~10 kW installation is protected by a phase-sequence protector and three emergency stops.

About Southern Machinery

Founded in 2011 in Shenzhen, Southern Machinery supplies cost-effective SMT and THT automation — insertion machines, wave soldering, board handling, cleaning and inspection — to more than 237 customers worldwide, with CE/RoHS compliance and global spares and service.

FAQ

What temperature does it reach? The published range is 150 to 190 °C — share your cure schedule and our engineers will confirm suitability.

How is it heated? Infrared heating tubes, approximately 10 kW total.

How much can it carry? Approximately 200 kg on an 800 mm wide mesh belt.

Can the size be customized? Yes, the product page states the oven can be customized to your requirements.

Is it a reflow oven? No — it is a drying/curing-class conveyor tunnel; reflow profiling is a different machine class.

Next Steps

Send us your board or pallet size, process window and required dwell time, and we will size an S-TO4000 for your line.

• Email: jasonwu@smthelp.com | WhatsApp: +86 13602562576
• Product page: https://www.smthelp.com/product/s-to4000-tunnel-oven
• Catalog: https://file.autoinsertion.com | Images: https://ph.smthelp.com