NEWMK7 SeriesAir / N₂ reflow oven
Reflow oven for high-volume production
- Low Delta T
- N₂ cut up to 40%
- 160 mm lower than MK5
Heller Industries MK7—a convection reflow oven for high-volume SMT and semiconductor lines. Low Delta T, up to 40% less N₂, double insulation for power savings, and in-operation flux recovery in a low-height chassis. Air and N₂ capable.
Overview
Low-height production oven
160 mm lower than MK5—see across the line
A new package with reduced top-plate height for high-volume SMT and semiconductor lines.
About 160 mm shorter than the previous MK5 series, improving operator visibility and access.
Double-insulated exterior cuts reflow heat loss by 10–15%.
Low Delta T
Low-height heaters and large impeller
Thin heater modules and a large impeller improve airflow and temperature uniformity in each zone.
Lower board Delta T keeps within-board variation small even on demanding lead-free profiles.
Semicircular heaters are more rugged than before and last longer.
N₂ and power
Cut net flow—N₂ use down by up to 40%
Uniform gas management eliminates net flow in the chamber and cuts N₂ use by up to 40%.
Energy management software throttles exhaust, zone blowers, and the conveyor in idle to save power and N₂.
The new frame and insulation also reduce heat loss.
Stable board transport
Pin-support guides and rails designed for thermal expansion keep board attitude stable during transport.
Chain and mesh belt, single or dual lane. Width adjust is motorized; lubrication is automatic.
Conveyor speed 250–1,880 mm/min with low vibration and high parallelism.
Heller’s high-efficiency flux recovery unit
To minimize flux buildup in the oven, the number of recovery units can be selected based on solder usage.
High-insulation structure
Proprietary high-insulation construction reduces HVAC load around the oven.
Vacuum option
Vacuum module when void-free soldering is required
MK7 is air/N₂ convection reflow. When peak-zone vacuum is required, we recommend the MK5 vacuum reflow.
Module lineup
1800 Series
- Overall length
- 4.65 m
- Cooling zones
- 2 zones*
- Max. PCB size
- 560 mm
- 1826MK7 Heating: 8 zones
- 1809MK7 Heating: 9 zones
1900 Series
- Overall length
- 5.90 m
- Cooling zones
- 3 zones*
- Max. PCB size
- 560 mm
- 1936MK7 Heating: 10 zones
- 1913MK7 Heating: 13 zones
2043
- Overall length
- 6.78 m
- Cooling zones
- 3 zones*
- Max. PCB size
- 560 mm
- 2043MK7 Heating: 13 zones
2049
- Overall length
- 7.44 m
- Cooling zones
- 4 zones*
- Max. PCB size
- 560 mm
- 2049MK7 Heating: 15 zones
2156
- Overall length
- 8.69 m
- Cooling zones
- 5 zones*
- Max. PCB size
- 560 mm
- 2156MK7 Heating: 17 zones
*Lower cooling is optional.
Works well with
Reflow checker
Measure reflow temperature profiles to catch drift from set values early. Choose from slim units to modular RCX systems for your line.
Learn more →
Specifications
- Manufacturer
- Heller Industries
- Series
- Convection reflow oven MK7 (air / N₂)
- Heating method
- Forced convection (low-height heaters)
- Atmosphere
- Air / N₂ (N₂ use cut by up to ~40%)
- Board width
- 50–560 mm (optional 610 mm)
- Conveyor speed
- 250–1,880 mm/min
- Max. temperature
- 350°C (optional 400°C)
- Conveyor
- Chain / mesh belt, single or dual lane
- Connectivity
- IPC-Hermes 9852, IPC-CFX, SECS/GEM
- Bottom cooling, cleanroom, and 400°C configurations are optional.
- When vacuum is required, we recommend MK5 (N₂ vacuum).
- Detailed specifications vary by zone configuration. Please contact us.
- Specifications and appearance are subject to change without notice for improvement.
Contact
Questions or consultation requests are welcome.