The Stingray E7 is an electric coffee roaster, engineered with precision to deliver exceptionally consistent roasts. Our exclusive ElectroFlame technology and smart Heat Management Software are a breakthrough in the industry, pairing a powerful electric burner with a meticulously designed ceramic drum housing to create an unparalleled roasting experience and an exceptional cup profile.
Clear visual monitoring of the roasting process
Easily pour cooled beans to the designated container or a bag placed inside.
Swift, responsive pneumatic doors quickly load the drum or release the roasted beans.
Built-in magnifying lens with integrated lighting for precise, close monitoring
Precisely monitor in-drum pressure to ensure consistent results and smooth operation.
Built with precision metalwork, and premium hardware for best reliability.
Intuitive touch screen interface for smooth, responsive control
Necessary safety measure in an extreme event of fire inside the drum.
The Stingray E7 introduces ElectroFlame technology, a breakthrough that brings electric roasting to a new level by pairing a high-performance electric burner with a meticulously designed ceramic drum. This system is engineered to preserve the distinguished CTE cup profile, providing a powerful yet refined heat source that creates an unparalleled roasting experience.
Equipped with proprietary heat management software, the Stingray E7 ensures consistent, high-performance roasting while significantly minimizing energy consumption. This advanced system provides the intelligence needed to maintain stable roasting conditions, allowing for a smooth and controlled process from start to finish.
The Stingray E7 features a ceramic-lined drum housing that insulates the roasting chamber and maintains stable, evenly distributed heat throughout the roast. The thick ceramic layer shields the drum from external temperature influence, guaranteeing thermal stability and consistent roasting conditions. At the same time, the insulation significantly reduces heat loss and prevents constant reheating, significantly lowering electricity consumption and optimizing energy efficiency.
The Stingray E7 drum operates within a fully insulated chamber at sub-atmospheric pressure. This innovative design ensures consistent roasting minimizing the risk of scorching or tipping, while also preventing gases and pollutants from escaping into the user's environment.
Our Vortex TO4 drum uses a precise spiral airflow pattern that drives heat through the bean mass in a controlled, continuous motion. This optimized airflow achieves stronger heat transfer with less intake air, increasing efficiency while maintaining full control over the roast. The result is even bean development, improved energy efficiency, and consistently higher cup quality.
Roast masters gain complete and precise control over the roasting profile, enabling them to execute every roasting style with total freedom. This level of command allows for the delivery of the entire spectrum of flavor and aroma, ensuring that the coffee stops developing exactly how you intended.
For a truly sustainable experience, the Stingray E7 integrates seamlessly with the Commercial Avirnaki, a fully electric smoke elimination system. This system operates with zero reliance on fossil fuels, effectively eliminating harmful emissions such as CO and NOx to meet the highest environmental standards. his electric solution provides maximum efficiency and durability, making it the perfect choice for environmentally conscious roasteries
Perfect heat dispersion assures essential coffee compounds are fully developed and enhanced during the roasting process.
A unique combination of conduction and controlled convection assures the final cup profile displays excellent, high aroma levels.
Advanced thermodynamic design and a clean, precise combustion method secure a high-quality, smooth cup profile.
Engineered for high-output performance with minimal power consumption, ensuring maximum energy savings and a reduced carbon footprint.
The Stingray E7 is built with a sealed structure that prevents emissions from escaping into the roasting space, ensuring a safe and controlled working environment. An integrated in-drum fire extinguisher allows for immediate response in the event of a drum fire. In addition, a manual safety crank enables the roastmaster to evacuate the beans manually in the event of a power loss, ensuring full control under all operating conditions. At Coffee-Tech Engineering, protecting the roastmaster is as critical as protecting the roast.
Our geometric drum design was engineered in-house to maximize contact between each bean and the drum surface, promoting consistent heat transfer throughout the roast. This precise bean movement results in highly uniform batches with repeatable outcomes. At the end of the roast, the same geometry enables rapid and complete evacuation, preventing unintended over-roasting and ensuring the coffee stops developing exactly where you intended.
The Stingray E7 is equipped with a high-performance turbo cooling system capable of cooling a full 7 kg batch in less than three minutes. Rapid cooling immediately stops the roasting process, preventing over development and locking in the intended flavor profile. The result is cleaner cup expression, higher consistency, and full control over the final roast outcome.
Record and analyze your roasting profiles with ease. The Stingray E7 is compatible with all popular roast logging software.
Regular software updates are developed by our team and can be downloaded via Wi-Fi, allowing even older Stingray models to benefit from the latest improvements and features.
The Stingray E7 features an extremely compact footprint, and is the most efficient 7kg roaster on the market. allowing it to integrate easily into your current setup without taking up much space or compromising on quality.
Backed by an experienced technical team and a global network of authorized distributors, the Stingray E7 is supported with responsive after-sales service, expert technical guidance, and long-term service availability to ensure reliable performance for years to come. With three decades of experience building top-quality coffee roasters, Coffee-Tech Engineering is a partner you can rely on.
Bean, drum, and exhaust temperatures are continuously monitored with three integrated probes for precise thermal control, and allowing high repeatability.
Batch Capacity
1-7 kg (2.2-15.5 lbs) of Green Coffee
Roasting Cycle
11-17 minutes for a full batch
Hourly Output
Approx. 28kg (62 lbs)
Quality and safety compliance
CE, RoHS, EMC
Electrical Specifications
380V | 50/60Hz | 18,000W
Drum Motor
Individual, heavy duty gear motor. Digital variable drum speed control comes standard
Heating Source
ElectroFlame Technology, Electric Burner
Cooling Blower
High capacity cooling blower, cooling time is about 2-3 minutes
Chaff Evacuation
Cyclone chaff collector with booster blower - for clean roasting and cleaner exhaust
Bearings
Heavy duty, precision bearings. Long intervals between required maintenance
Dimensions
121W x 165D x 153H cm (48" x 59" x 60")
Weight
255 kg (562 lbs)
Body
Full precision metal work, top quality hardware, galvanized steel, carbon steel and stainless steel
What makes the Stingray E7 different from traditional gas roasters?
The Stingray E7 is a fully electric, high-performance roaster that doesn’t compromise on our unique cup profile. By using our ElectroFlame technology, it provides the thermal behavior and power typically associated with gas, but with the precision and environmental benefits of a fossil-fuel-free system.
How much space do I need for this 7 kg roaster?
We’ve engineered the Stingray E7 to have the most compact footprint in its class. It is designed to fit into tight boutique roasteries or production floors without requiring heavy infrastructure, making it ideal for urban environments where space is at a premium.
Does the Stingray E7 support third-party roasting software?
Yes. While the roaster features its own proprietary heat management software, it is fully compatible with all industry-standard data logging platforms. You can record, analyze, and replicate your profiles using the software you are already comfortable with.
How does the Vortex TO4 drum design improve energy efficiency?
Most roasting machines relie on high volumes of intake air to move heat, having more air to heat up obviously requires more power. The Vortex TO4 utilizes a powerful spiral airflow pattern that drives heat through the bean mass with significantly higher pressure and lower volume. By achieving stronger heat transfer with less air, the system maintains a more stable thermal equilibrium, allowing the heating elements to operate at a lower duty cycle while achieving the same development.
What is the benefit of a sub-atmospheric pressure chamber?
By operating the drum within a sealed, stable-pressure environment, we significantly increase consistency from batch to batch. This design also serves as an environmental safeguard, ensuring that no smoke or pollutants leak into your workspace; everything is contained and directed toward the exhaust or the smoke filtration system.
How does the ceramic insulation affect energy consumption?
The thick ceramic layer acts as a thermal shield. Once the drum reaches temperature, the insulation prevents heat from escaping. This means the heating elements don't have to work as hard to maintain stability, leading to a massive reduction in electricity usage compared to non-insulated roasters.
What happens if there is a power outage during a roast?
Safety is a core pillar of our design. The Stingray E7 includes a manual safety crank that allows you to manually rotate the drum and evacuate the beans immediately during a power failure. This prevents the beans from catching fire.
How do I keep the software up to date?
The Stingray E7 is Wi-Fi enabled. Our engineering team regularly releases performance updates and new features that can be downloaded directly to your machine. This ensures that even as technology evolves, your roaster remains at the cutting edge of industry standards.
Is there a built-in fire extinguisher?
Yes. The E7 features an integrated in-drum fire extinguisher. In the rare event of the roast catching fire, the system allows for an immediate response to neutralize the threat instantly, protecting both your equipment and your facility.
