HELLER MK7 Next Generation Reflow Oven: 4 Key Advancements

Heller MK7 reflow ovens set a new benchmark for electronics manufacturers striving for both high productivity and environmental responsibility. Building on Heller Industries’ legacy as pioneers of convection reflow soldering since the 1980s, the MK7 series represents a true evolution in design and technology. Its low-height profile improves visibility across the production floor, while eco-friendly features such as reduced nitrogen consumption, enhanced energy efficiency, and improved flux management deliver significant sustainability gains compared to the MK5 series. Discover how the MK7 brings fresh advancements and tangible production benefits to modern electronics manufacturing.

Energy Saving/Electrical Consumption

• Intelligent energy management software enables users to optimise energy consumption throughout different production cycles, whether the oven is in heavy use or idle. Energy savings of up to 10 – 20% can be achieved.
• The energy required for oven start-up has been significantly reduced, improving initialisation speed.
• Optimal airflow, uniformity, and double insulation on all the MK7 skins achieve at least a 10-15% energy saving compared to the MK5

Nitrogen Consumption

• The MK7 ovens feature advanced systems such as the uniform gas management and Nitro-Gate, which can reduce nitrogen consumption up to 40% compared to the MK5.
• Better control and distribution of nitrogen throughout the oven reduces usage and also maintains consistent reflow conditions.
• The patented nitrate system with dual doors at the oven’s entrance and exit creates and enclosed environment, further minimising nitrogen consumption.

Temperature Control/Heating Zones

• The redesigned heating zones reduce the overall mass and shorten the distance from the fans to the oven. This requires less energy to heat the oven and less energy to maintain its temperature. As a result, the oven warms up to 25% faster and is more responsive when reflowing higher thermal mass products. This improved design helps maintain uniform internal zone temperatures, increasing profile accuracy.
• New low-height heater module which provides the Lowest Delta T’s for superior thermal uniformity and improved airflow.

Flux Management

• With the new flux filtration box, there is no risk of flux clogging as the filtration performance is excellent allowing for extended planned maintenance (PM).
• The flux collection system traps flux in jars that can be changed while the oven is running – no downtime for changes.
• Heller’s proprietary Flux-Free Grill system limits the flux residue on the cooling grills ensuring high production yields.

Smart Manufacturing Integration

• MK7 ovens are Industry 4.0 ready, with advanced monitoring data analysis to further drive process optimisation and support long-term sustainability goals.
• Real-time thermal profiling and digitalised process controls ensure consistent, high-quality results while minimising waste and defects.

Eco-Friendly Construction

• The oven’s design uses eco-friendly insulation materials and hardware to decrease its carbon footprint.
• The low-profile module improves access and contributes to sustainability by using less material and energy in production and operation.

Heller MK7 Reflow Oven – Summary

The new generation Heller MK7 continues to advance reflow technology by building on the success of previous models and delivering exceptional levels of productivity and efficiency while prioritising environmental impact. Industry 4.0 compatibility ensures seamless integration into existing production setups. Improved temperature uniformity, highly advanced monitoring and energy-based ROI across the new models make the MK7 series a versatile and efficient choice for modern manufacturing environments.

The Heller MK7 series is available in the 1800, 1900, 2000 and 2100 models. Contact our team and find out which oven is best suits your throughput requirements.