CQ-6KG Coffee Roasters Coffee Bean Roaster

Technical Selection

Key parameters for matching this machine to your production. Send us your product to freeze, daily output and power supply and our engineers will confirm the right configuration.

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Main Components

• Roasting Drum (hybrid drum utilizing both conductive and convective heat)
• Burner Heating System (gas burner assembly)
• Hot Air Blower and Ducting (provides convective heat and assists in smoke extraction)
• Drum Agitation Vanes (ensure uniform tumbling of the coffee bean bed)
• Drum Drive Motor and Speed ​​Control Mechanism (allows for adjustment of drum rotation speed)
• Green Bean Hopper/Inlet (for loading raw coffee beans)
• High-Temperature Resistant Observation Window (for real-time monitoring of bean color and roasting progress)
• Sampling Trier/Sampler (for extracting bean samples during the roast to assess development)
• Temperature Sensors and Thermocouples (monitor bean temperature, airflow temperature, and ambient temperature)
• Control Panel/PLC Control System (centralized control for heat intensity, airflow, drum speed, and roasting time)

Working Principle

Once a 6kg hybrid (semi-direct-fire/semi-hot-air) coffee roaster is started, the gas burner heats the combustion chamber and the outer wall of the roasting drum, which begins to rotate as it preheats. Upon reaching the target temperature, the green coffee beans are loaded into the drum. The rotation of the drum keeps the bed of beans in constant motion, preventing localized overheating. Simultaneously, heat is applied via two mechanisms: conductive heat is transferred to the beans through the metal drum walls, while a fan circulates hot air into the drum, providing convective heat that ensures the beans are heated more uniformly. During the roasting process, the hot air carries away moisture, chaff, and smoke released by the beans, venting them through the exhaust system. Chaff is typically separated using a cyclone collector, which prevents it from burning inside the roaster and creating off-flavors. The roaster operator can adjust the heat intensity, airflow, and drum rotation speed, while also using the observation window to take samples—monitoring bean color, aroma, and the progression of the "first crack" and "second crack"—to achieve the desired light, medium, or dark roast profile. Once the coffee beans reach the target roast level, the discharge gate is opened (either automatically or manually), and the beans are released into a separate cooling tray. The cooling tray activates a stirring mechanism and a forced-air system, rapidly lowering the temperature of the beans. This halts the roasting process, stabilizes the flavor profile, and reduces the turnaround time for the next batch.

Detailed Features

• ▸Features a hybrid heating system combining direct flame and hot air, utilizing both conductive heat from the drum and convective heat from the airflow to ensure uniform heating of the coffee beans.
• ▸With a 6kg nominal batch capacity, it is well-suited for specialty coffee roasteries, retail chains, laboratories, and small-to-medium-scale production facilities.
• ▸The design employs external drum heating supplemented by hot air circulation, minimizing direct flame contact with the beans and reducing the risk of localized scorching.
• ▸Heating intensity is independently adjustable, allowing for precise control over the rate of temperature rise based on factors such as green bean density, moisture content, and the target roast profile.
• ▸Airflow is independently adjustable, enabling control over drying rates, bean surface characteristics, and flavor development.
• ▸Adjustable drum rotation speed optimizes bean agitation, minimizing "dead zones" and ensuring consistent roasting.
• ▸Constructed with a high-temperature-resistant, wear-resistant, and corrosion-resistant stainless steel drum, designed for long-term, continuous operation.
• ▸Components that come into contact with coffee beans are made of stainless steel, meeting the hygiene and durability standards required for commercial coffee roasting.
• ▸Equipped with a dedicated cooling tray, allowing roasted beans to be quickly moved away from the heat source to prevent further development from residual heat.
• ▸The cooling tray includes an agitation arm and a forced-air cooling system, which accelerates the cooling process and enhances operational efficiency between batches.

Packaging & Shipping

The main unit is packed in a plywood or fumigation-free wooden crate, featuring forklift slots at the base to facilitate loading, unloading, and long-distance transport. Exposed metal surfaces on the machine are coated with anti-rust oil or wrapped in anti-rust paper to prevent oxidation caused by salt spray and humidity during ocean transit. The entire unit is wrapped in moisture-proof film or stretch wrap, with desiccant placed inside the crate to mitigate the impact of condensation—common in shipping containers—on electrical components and stainless-steel parts. Removable components, such as rollers, cooling trays, and fans, are packed separately; a packing list is included to assist with verification and installation upon arrival. Precision components—including control panels, displays, sensors, and thermocouples—are cushioned with foam or bubble wrap to protect against vibration and impact. For gas-powered models, critical components such as valve trains, pressure gauges, and burners are securely fastened to prevent loosening or deformation during transit. The exterior of the crate is labeled with waterproof markings, including the product name, model, gross weight, net weight, dimensions, case number, destination, and consignor/consignee details. Handling instructions such as "This Side Up," "Fragile," "Keep Dry," and "Do Not Roll" are clearly marked on the outer packaging to minimize risks during handling. The crate is reinforced with packing straps or steel bands, and all joints are tightly sealed to withstand stacking and multiple transshipment points during ocean freight. We support various shipping methods—including Full Container Load (FCL), Less than Container Load (LCL), air freight, and land transport—tailored to your order volume and delivery timeline. For ocean exports, we prioritize the use of fumigation-free plywood packaging; if solid wood packaging is used, it will comply with ISPM 15 standards and bear the IPPC mark. For shipments to the EU, the United States, Southeast Asia, and other markets, we can provide relevant certifications, including CE, UL, RoHS, and ISO 9001. Relevant certification documents We can provide supporting documentation—including packing lists, invoices, bills of lading, factory inspection reports, user manuals, and installation drawings—to facilitate customs clearance and on-site inspection. Customized packaging solutions are available, such as reinforced wooden crates, steel-frame crating, and specialized securing methods for containerized shipping, tailored to the requirements of different ports and logistics conditions. Before shipment, we offer services such as photographic verification, re-checking of dimensions, and confirmation of container loading plans, helping to minimize the risk of dimensional discrepancies or cargo damage upon arrival.

After-Sales Service

The complete machine comes with a 24-month warranty, effective from the date of successful acceptance. During this period, any malfunctions resulting from material or manufacturing defects will be covered by free repairs or component replacements. The warranty covers core components, including the main unit, roasting drum, motor, fan, and control system. Wear-and-tear parts and damage caused by improper operation are excluded from free coverage and will be subject to a service fee. Remote technical support is available; customers can receive assistance with troubleshooting, parameter adjustments, and operational guidance via phone, email, or video call. We guarantee a response within 24 hours of receiving an after-sales request. Most issues will be addressed through remote diagnostics, with on-site technical support arranged if necessary. Operational training is provided for your staff, covering topics such as bean loading, roasting profile configuration, routine cleaning, chaff removal, cooling system maintenance, and safety protocols. Comprehensive documentation—including multi-language user manuals, electrical wiring diagrams, gas parameter charts, spare parts lists, and maintenance guides—is provided to facilitate independent maintenance by the customer. Beyond the warranty period, we continue to offer repair services, spare parts, and technical upgrades, charging only for labor, components, and travel expenses. Common spare parts—such as thermocouples, fans, belts, burner components, and control elements—are kept in stock to ensure short delivery lead times. We provide copies of certifications such as CE, UL, RoHS, and ISO9001 to assist customers with import customs clearance, site acceptance, and safety inspections. Technical documentation can be provided in English, Spanish, or other languages ​​to suit the needs of international markets and customer preferences. Annual maintenance plans are available, encompassing periodic inspections, optimization of the combustion system, air duct cleaning, electrical safety checks, and calibration of roasting profiles. For overseas clients, we provide packing lists, factory inspection reports, photographs of equipment nameplates, and container loading confirmation to streamline port acceptance and post-arrival support. Services such as repairs, modifications, on-site training, or re-commissioning—when not related to quality defects—will be performed according to a mutually agreed-upon quotation. After-sales terms can be customized for OEM/ODM projects, distributor procurement, or end-user contracts, including adjustments to warranty duration, spare parts packages, and service response protocols.

Frequently Asked Questions