• Phone



SMT Reflow Oven - Mark7

The World's Best SMT Convection Reflow Oven for High-Throughput Applications

The New MK7 platform revolutionizes the Reflow industry with several new and ground breaking designs! The MK7 incorporates all of the customer requests for lower Delta T, reduced nitrogen consumption and extended PM into a new low height package that makes it easy to see across the production floor.

We invite you to visit any of our three locations to run profiles and gather DATA for yourself to see the strong advantages of the MK7 for your production! Or if you prefer, send us your toughest board and we will run profiles and generate the data for you. We are happy to work with you to custom configure your system to suit your needs.

  • Highest Yields!
  • Lowest Delta T on the board
  • Lowest Nitrogen & Electrical Usage!
  • Maintenance Free!
  • VOID Free - with Vacuum option
  • INDUSTRY 4.0 Compatibility
  • Integrated Cpk software at No Charge!
New Low Height Top Shell

New low height top shell provides much easier access for operators. All skins have double insulation to save up to 10-15% in energy losts.

INDUSTRY 4.0 Compatibility

Internet of Manufacturing (IoM) —Smart factories, intelligent machines and networked processes through the use of cyber-physical systems.

Enhanced low height heater module provides the lowest Delta Ts on the product with better air flow and uniformity! The Uniform Gas Management system eliminates "net flow" which results in nitrogen consumption reductions of up to 40%! New semi-circular heater is more robust and efficient with much longer life time.

Revolutionary Flux Management System
SMT Reflow Oven – Mark7 photo

Our revolutionary flux collection system traps the flux in collection jars that can be easily removed and replaced while the oven is running - saving time consuming P.M. The new flux filtration box also has no risk of flux clogging for a longer term P.M. interval. Additionally, our proprietary Flux-Free Grill system limits the flux residue on the cooling grills giving the Heller system the highest production yields of any oven!

Programmable Cooling
reflow oven cooling module
Energy Management Software
Reflow Oven CPK
reflow oven CPK

Heller provides dynamic 3 tiered system (Tier 1: Oven CPK, Tier 2 Process CPK, Tier 3 Product Traceability) enables customer to quickly improve product quality and yield while reducing costs. And the additional benefits of automatic record keeping and recall provide customers with the peace of mind that all process parameters are under control and within spec.

Mark7 Series SMT Reflow Oven Models Specifications

MK7 Models

Overall Length

# of Heating Zones

# of Cooling Zones

Max PCB Width

1826 MK7 SMT Reflow Oven


465 cm (183″)


2 Top (std) Bottom Cool /
External Cool optional



465 cm (183″)


2 Top (std) Bottom Cool /
External Cool optional


1936 MK7 SMT Reflow Oven


590 cm (232″)


3 Top (std) Bottom Cool /
External Cool optional



590 cm (232″)


3 Top (std) Bottom Cool /
External Cool optional


2043 MK7 SMT Reflow Oven


678 cm (267″)


3 Top (std) Bottom Cool /
External Cool optional




744 cm (292″)


4 Top (std) Bottom Cool /
External Cool optional


2156 MK7 SMT Reflow Oven


869 cm (342″)


5 Top (std) Bottom Cool /
External Cool optional


*1913, 1809 & 1707 Reflow Ovens have 10 inch wide heater modules for reduced liquidus time.

**2043, 1936 & 1826 Reflow Ovens have 12 inch modules for profile compatibility with competitor systems.

Learn More

Download Brochure

We know you hate sales guys & you don't have a lot of time. We can do a consult over Webex and let you ask questions without having to listen to a sales pitch.

We welcome you to visit any of our facilities - USA, Asia, Europe to get a closer look at our products and have all of your questions answered.

4 Vreeland Road,
Florham Park, NJ 07932, USA





Heller offices span the globe to facilitate the needs of our customers. Find representative

Find replacement parts for Heller reflow equipment


Join our mailing list to get future updates on new technologies!