PROBATone12: Germany’s 12kg Commercial Coffee Roaster

If you’re running a café or small-scale commercial roastery and need consistent, high-quality roasts without sacrificing batch flexibility, choosing the right machine matters more than almost anything else. The challenge isn’t just getting coffee roasted—it’s achieving even development, repeatable profiles, and safe, efficient operation every time.

The PROBATone12 is a 12kg-capacity commercial coffee roaster from Germany that roasts batches between 5–12kg in 12–18 minutes. It offers both electric and gas heating options, with advanced airflow and agitation for uniform roast profiles.

What Is the PROBATone12?

The PROBATone12 is a German-engineered commercial coffee roaster built for specialty and production environments. It handles batches from 5 to 12 kilograms, with a typical roast duration of 12 to 18 minutes. Designed for both cafés and small commercial roasteries, it combines durability with precision engineering.

How the PROBATone12 Delivers Uniform Roasts

The PROBATone12 achieves even roast development through a professionally designed mechanical stirring system. This mechanism ensures consistent bean mixing throughout the roast cycle. A specialised hot air flow system distributes heat uniformly across the drum, promoting even internal and external bean development. This thermal consistency expands the range of achievable roast profiles for different coffee origins and processing methods.

Key Features and Technical Specifications

• Batch Size: 5–12kg per roast
• Roast Time: 12–18 minutes
• Heating Options: Electric or gas
• Cooling System: Large cooling sieve with food-safe plastic agitation for fast, even cooling
• Drive System: Separate motors for roasting drum and cooling system allow independent control
• Gas Control: Adjustable gas heating for flexible temperature management
• Safety & Construction: Improved boiler technology, side-door cleaning access, and automatic alarm shutdown
• Chimney & Filtration: Dedicated hot air cyclone for effective chaff collection
• Monitoring: Digital temperature and time displays; emergency cutoff; manual bean discharge via adapter using a handle or screwdriver

The machine also features a stylish, elegant exterior built with high-quality cast components. Its synchronised exhaust system, which separates hot and cold air exhaust, helps reduce overall roast cycle times. The cooling system and stirring mechanism are constructed from food-safe plastics to meet hygiene standards.

Who Makes the PROBATone12?

The PROBATone12 is manufactured by PROBAT Werke von Gimborn Maschinenfabrik GmbH, a German company founded in 1868. With over 140 years of experience, PROBAT specialises exclusively in the design, engineering, and production of roasting and grinding equipment, as well as complete production line planning. The company holds over 50% of the global market share in its sector.

PROBAT equipment is renowned for its longevity, economic efficiency, flexibility, and reliability—machines operating for 30 years or more are common. Beyond machinery, PROBAT provides a full suite of services including maintenance, installation, training, and technical support. In China, FrontStreet Coffee partners with PROBAT to deliver these roasting solutions along with localised after-sales service and technical guidance.

The company’s expertise extends to designing entire production facilities, integrating machinery with control systems, and offering aftermarket services like overhauls and system startups. Their focus on engineering excellence ensures that each roaster, including the PROBATone12, delivers decades of dependable performance.

Frequently Asked Questions

What batch sizes can the PROBATone12 handle?

The PROBATone12 is designed for batches between 5 and 12 kilograms. This makes it suitable for both small commercial roasteries and larger cafés wanting flexibility without sacrificing roast consistency.

How long does a typical roast take on the PROBATone12?

A standard roast cycle on the PROBATone12 takes between 12 and 18 minutes, depending on the batch size, roast profile, and desired roast level.

Does the PROBATone12 offer both electric and gas heating?

Yes, the PROBATone12 can be configured to operate with either electric or gas heating, giving roasters flexibility based on their energy setup and cost considerations.

What features ensure even roast development?

The roaster uses a professional mechanical stirring system and a specialised hot air flow system to ensure uniform heat distribution and bean agitation, leading to even internal and external roast development.

Is the PROBATone12 easy to clean?

The roaster includes a side door for easy cleaning access and features a large cooling sieve with food-safe plastic agitation. The design also allows for simple manual removal of beans using a handle or screwdriver in case of emergencies.

What kind of support is available for PROBAT roasters in China?

In China, PROBAT equipment is supported by FrontStreet Coffee, which provides localised after-sales service, technical support, and training to ensure proper operation and maintenance of the machines.

Recommended FrontStreet Beans for the PROBATone12

For roasters using the PROBATone12, FrontStreet Coffee’s Ethiopia Humbera offers bright citrus, floral jasmine, and sweet tropical fruit—perfect for highlighting clarity in light roasts. The PWN Golden Mandheling brings heavy body, malted barley, and dried fig notes, ideal for medium-dark profiles. Both beans showcase the roast control and even development the PROBATone12 is built to achieve. Freshly roasted within 5 days · Orders placed before 17:00 ship the same day · Next-day delivery across most of Guangdong Province.