Coffee Roaster CaVers

We are excited to announce the joint development of the coffee roaster “CaVers” in collaboration with ANAORI CARBON Co., Ltd.
By combining MOTOYAMA’s thermal application technologies honed through the development of Industrial Electric Furnaces with ANAORI CARBON’s advanced carbon and graphite innovations, we have successfully created a roaster featuring a groundbreaking carbon drum.
Unlike conventional roasters, CaVers enables temperature control, allowing heat to be distributed evenly to the coffee beans.
As a result, users ranging from coffee enthusiasts to professionals can effectively apply their desired temperature management (roasting profiles) to the beans, achieving consistently high-quality roasting results.

ADVANTAGES

These roasters have a vertical stationary drum, differentiating them from conventional horizontal rotating drum designs.
The drum is made of carbon, which enables uniform temperature distribution of the coffee beans compared to metal drums.
Inside the drum, the beans are agitated by vortices of hot air, ensuring that heat is applied evenly to every bean. This structure allows for roasting with minimal temperature variation, resulting in consistent, high-quality roasting performance.

FEATURES

The synergistic combination of hot-air vortices and carbon facilitates roasting according to the three fundamental principles of heat transfer.
(Patent No. 7818249, registered February 12, 2026).

• Thermal Conduction: Direct heating from the drum (heats the bean surface)
• Thermal Convection: Heating by flow of hot air (roasting bean evenly)
• Thermal Radiation: Far-infrared heat from carbon (heats the bean interior)

This technology guarantees uniform heating and shorter roasting times.
Furthermore, precise temperature control, achieved through Electric Furnace technology creates an optimal thermal environment for roasting high-quality beans.

Properties of Carbon and Graphite

• Far-Infrared Radiation
  The high far-infrared radiation emitted by carbon and graphite provides efficient radiant heating, enabling faster roasting with minimal damage to the beans.

• High Thermal Conductivity
  The drum quickly reaches a uniform temperature, allowing for a rapid heating and cooling response that ensures precise temperature control.
  Residual heat time is reduced by half compared to steel, facilitating faster cooling and shorter roasting cycles.

• Thermal Shock Resistance
  Carbon and graphite are highly resistant to thermal shock, with no damage or deformation occurring due to rapid heating or cooling.
• Lightweight
  With a density approximately one-fourth that of steel, carbon enables significant weight reduction.