S-WS350B Lead-Free Dual Wave Soldering Machine with PC Control by Southern Machinery

The S-WS350B is a compact lead-free dual wave soldering machine with PC+PLC control, designed for EMS factories that need reliable THT soldering with a 350 mm PCB width capacity.

What is this machine used for?

The S-WS350B uses dual-wave technology for lead-free or standard solder. Its 350 mm width is ideal for mid-volume lines where floor space is at a premium.

Applications: Power supplies, LED lighting, appliances, automotive electronics, and general industrial PCBA.

Verified specifications from the product catalog

| Parameter | Specification |

|-----------|---------------|

| Model | S-WS350B |

| PCB width | 50–350 mm |

| Speed | 300–1800 mm/min |

| Control | PC + PLC |

| Preheat | 1800 mm, 15 kW, 3 zones |

| Preheat temp | ~250°C |

| Heating | Infrared |

| Solder | Lead-free or common |

| Solder pot | 9 kW, ~320 kg |

| Solder temp | ~300°C (±1–2°C) |

| Flux capacity | Max 5.2 L |

| Power supply | 3-phase 380 V |

| Normal power consumption | ~2.5 kW |

| Dimensions | 3500 × 1400 × 1650 mm |

| Weight | ~1200 kg |

Source: Southern Machinery product page. Confirm parameters during quotation.

Line integration

1. SMT pick-and-place → Reflow → AOI
2. SMEMA board transfer into the S-WS350B
3. Automatic flux spray (Japan Meiji sprayer)
4. 3-zone infrared preheat up to 250°C
5. Dual wave lead-free soldering up to 300°C
6. Centrifugal wind cooling
7. Downstream: lead cutting (S-320AT), cleaning (S-6200)

Key selection parameters

• PCB width: Max 350 mm — verify your board envelope
• Conveyor speed: 300–1800 mm/min
• Solder type: Lead-free or common solder
• Power: 3-phase 380 V / 415 V
• Footprint: 3500 mm length

ROI perspective

Replaces 3–5 manual soldering operators per shift with consistent PC-controlled quality. Normal operation at ~2.5 kW minimizes energy costs. Southern Machinery provides ROI modeling on a case-by-case basis.

About Southern Machinery

Shenzhen Southern Machinery Sales And Service Co., Ltd, founded 2011 in Shenzhen, China. 237+ global customers across EMS, ODM, automotive, and medical electronics. CE certified, RoHS compliant.

FAQ

What PCB sizes can it handle?

50 mm minimum to 350 mm width.

Does it support SMEMA?

Yes, standard interface.

Can it run both lead-free and leaded solder?

Yes, but changeover requires cleaning.

What are the key components?

Siemens PLC, OMRON, SMC, Delta, MEANWELL, Chint.

Next steps

Email: jasonwu@smthelp.com | WhatsApp: +86 13602562576

Catalog: https://file.autoinsertion.com | Images: https://ph.smthelp.com

YouTube: https://www.youtube.com/watch?v=v61h33g-jkM

Published by Southern Machinery — SMT/THT PCB Assembly Lines. Founded 2011 in Shenzhen. 237+ global customers in EMS, ODM, automotive, and medical electronics.