G Series
DRUM ROASTER

G Series – G60 and G120 Roasters

Classic design meets high quality components in a space-saving footprint. Probat G Series roasters are durable enough to withstand generations of use. Delivering optimal blending and a consistent roast, batch after batch. The G Series solid drum roasters have a capacity of up to 1,056 lbs. per hour.

Designed for medium to large-batch specialty coffee roasting, our G Series drum roasters will provide you with a high level of efficiency and flexibility for decades to come. Continuous monitoring tools and user-friendly controls ensure precise, consistent results in every batch.

The G Series roasters’ solid drum, special paddle mixer and user-friendly control panel ensure an excellent roast every time. Continuously monitor your batch’s progress with the integrated sight glass, sampler and bean thermocouple.

We’ve reduced heat energy lost in your roasting plant through insulation of the roaster burner. The oversized cooler quickly and efficiently cools beans. Separate cooler and roaster fans allow for maximum productivity. A free-standing cyclone improves chaff separation to minimize maintenance.

Manually adjust your roast or automate your entire process with flexible roasting controls. G Series roasters have built-in safety controls, including alarms that indicate equipment failure or when a batch requires attention. The G Series model also includes an auto-quench feature.

The drum roasting process in detail

The heart of PROBAT’s G Series drum roaster is a horizontal roasting drum, driven by a gearmotor. Shovel blades circulate the coffee beans during the roasting process. The flame of a burner generates the energy for the roasting air ,which is guided both through as well as around the roasting drum by means of flaps. As such, heat is applied through conduction via the bean’s contact with the roasting drum as well as through convection via the hot incoming air.

G SERIES ROASTER WITH EXHAUST AIR TREATMENT

Benefits for your coffee

The G60 and G120 provide a high level of efficiency and flexibility for complete control of the entire roasting process.

Solid roasting drum and special paddle mixer to ensure optimal blending and an excellent roast
Insulated burners for energy efficiency
User-friendly control panel for precise, consistent results
Sight glass, sampler and bean thermocouple for continuous monitoring
Separate drive fan and stirring mechanism to efficiently cool and discharge the coffee
Free-standing cyclone for effective chaff separation
Classic design and high-quality components for durability
Space-saving footprint
Automatic control panel with recipe programming, water quench and automatic discharge into the cooler (optional)

Versions

Control

The PROBAT G Series roasters are all equipped with a user-friendly control panel for precise, consistent results.

clear visualization and simple operation
recipe management with user-definable recipes. Settings that have been saved are reproduced safely and automatically.
overview of all key roasting parameters and temperature curves
all data relevant to production is saved, allowing it to be accessed and analyzed at any time
transparent presentation of the system’s operating status in real time
operated directly at the roaster

Environment and Cost-Effectiveness

Thermal or catalytic afterburners are available for pollution control requirements. Both systems can be applied to treat roaster and cooler air. PROBAT emission controls are designed to: