The Ersa HOTFLOW 4/8 features highest throughput, best process control and maximum machine uptimes.

Ersa HOTFLOW 4/8 High-End Reflow Soldering System
Ersa HOTFLOW 4/8 High-End Reflow Soldering System
Ersa HOTFLOW 4/8: Grip conveyor for extremely thin PCB or flexfoils
Ersa HOTFLOW 4/8: Multi track conveyor for variable PCB width
Ersa HOTFLOW 4/8: Efficient cooling in outfeed section
Ersa HOTFLOW 4/8: Retractable nozzle sheets for quick maintenance
Ersa HOTFLOW 4/8: Optimized access to maintenance units
Ersa Auto Profiler: Easy offline profiling for highest machine uptimes


Productronica 2013 - Ersa Show-TV Day 1


Highlights Reflow System Ersa HOTFLOW 4/8

  • High performing compact reflow system
  • Multi-stage cooling, both internal and external
  • Efficient process gas cleaning system
  • Low N2 consumption
  • Auto Profiler for quick profile generation
  • Multi-track conveyor system available
  • Thermally invisible center supports
  • Low energy consumption in continuous operation
  • Process control software Ersa Process Control (EPC)
  • Patented grip-conveyor system for flex circuits
  • Energy-usage optimized fan motors with integrated frequency converters


... HOTFLOW 4/8

The Ersa HOTFLOW 4/08 Reflow Soldering System is of robust design and manufactured entirely from steel, welded air-tight, powder coated and with interior electric cabinet and a PC operating terminal. Features include the motorized hood opening, quick-change convection heater cassettes, multi-level process gas cleaning and a powerful and effective cooling zone.


  • Pin-and-chain conveyors 3 / 4 / 5 mm pin length
  • Pin-and-chain conveyors  with low-mass center supports
  • Automatic width adjustment of conveyors and low-mass center supports
  • Up to 2 tracks with low-mass center supports in system
  • Patented grip conveyor system for flex boards
  • For an oven with single track, low-mass tubular supports are available
  • Operation possible with either ambient air or with nitrogen atmosphere
  • Cooling available with either integrated or external cooling unit
  • Cooling with either cooling unit or with local cold water connection

Technical data


  • Length: 3,905 mm
  • Width: 1,410 mm
  • Height: 1,350 mm
  • Weight app. 1,100 kg

Conveyor system

  • Working width: 45-560 mm, infinitely, automatically adjustable
  • Clear passage height: +32/-40 mm
  • Center support, infinitely, automatically adjustable
  • Conveyor speed: 20-200 cm/min
  • Pin-and-chain conveyor with 3 / 4 / 5 mm pin length

Process zone

  • Process Length: 3,260 mm
  • Length Heated: 1,525 mm
  • Length Cooled: 1,735 mm

Heating system

  • Convection heating modules, 8 units in total
    (Preheating up to 6 units, reflow zone 2 units)
  • Volumetric flow rate each module adjustable up to 500 m3/h
  • Rated power each module: 3.3 kW


  • 3 level cooling zone with water back cooling

Electrical data

  • 400 V, 3 Phasen, N, P, 50/60 Hz
  • Continuous output during operation: appr. 6-8 kW


  • Extraction capacity 2 stacks each 300-600 m3/h, monitored


Ersa Customer Reports

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Ersa EXOS 10/26: How to avoid Voids!

Helmut Hund GmbH relies on Ersa HOTFLOW

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More Customer Reports

Ersa Report
Ersa Report

UX Group: Touching Tomorrow with Human Machine Interfaces (HOTFLOW 3/20, EPP 09/2017)



Questions about the product?
Find your Ersa contact person here

Your contact persons for the process
Product Management Ersa Soldering Systems Germany


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