PROBATone25: Germany’s 25kg Commercial Coffee Roaster

If you’re roasting for a busy café or small-scale production and need consistent results across 20–25 kilogram batches, choosing the right roaster makes all the difference. Consistent heat distribution, efficient cooling, and durable construction aren’t luxuries—they’re essential for quality and throughput. So what machine delivers all that, and why does it matter for your roast profile?

The PROBATone25 is a 25kg-capacity gas-heated commercial coffee roaster designed to roast each batch in 12–18 minutes with even heat and airflow, ensuring uniform roast development inside and out.

What Is the PROBATone25?

The PROBATone25 is a 25-kilogram-capacity coffee roaster manufactured by PROBAT Werke von Gimborn Maschinenfabrik GmbH, a German company with over 140 years of experience in roasting equipment. It’s engineered for both commercial roasting operations and larger cafés that require a balance of output, consistency, and control. The machine roasts batches weighing between 20 and 25 kilograms, with a typical roast time ranging from 12 to 18 minutes depending on batch size and desired profile.

Key Features and Technology

The PROBATone25 uses gas heating, allowing for responsive and adjustable temperature control throughout the roast cycle. Its professionally designed mechanical agitation system ensures even bean movement, critical for uniform heat application and consistent roast development. A specialised hot air flow system distributes heat evenly around the beans, maintaining internal and external consistency and widening the range of achievable roast profiles on the same bean origin.

Cooling is handled by a large cooling sieve paired with a food-safe plastic agitation system, ensuring the beans cool quickly and uniformly after roasting. The machine employs separate drivers for the roasting drum and cooling system, giving roasters independent control over each function. Temperature and time are displayed digitally throughout the roast for precision monitoring.

Other practical features include a cold and hot air exhaust system operating independently to reduce roast cycle duration, a side-access door for easy cleaning, and an effective silver skin collection system through a dedicated hot air cyclone duct. In case of emergencies, an automatic power cut-off activates, and roasted beans can be manually removed using a provided handle or screwdriver via an adapter.

About PROBAT: A Legacy in Roasting Equipment

PROBAT Werke von Gimborn Maschinenfabrik has been producing roasting machines since 1868. The German manufacturer specialises in designing and building roasting and milling equipment, as well as complete production plant solutions. With over 50% global market share, PROBAT is a dominant name in the industry, known for equipment that lasts decades—machines operating for 30 years or more are common. The company provides not just machinery but also maintenance, installation, training, and technical support services.

Its core expertise includes roller mill production, roasting machine construction, and full plant planning and installation. Beyond hardware, PROBAT offers a wide range of services like system assembly, overhauls, and operator training. The company’s focus on durability, safety, and flexibility has made it a trusted partner for specialty and industrial roasters worldwide.

Frequently Asked Questions

What batch size does the PROBATone25 handle?

The PROBATone25 roasts batches between 20 and 25 kilograms, making it suitable for small commercial roasters and larger cafés needing consistent output without scaling up to industrial sizes.

How long does a typical roast take on the PROBATone25?

Roast times typically range from 12 to 18 minutes per batch, depending on the bean type, roast level, and desired profile.

What kind of heating system does the PROBATone25 use?

The roaster uses gas heating, which allows for precise and flexible temperature adjustments during the roast cycle.

Does the PROBATone25 have special airflow or cooling features?

Yes. It features a specialised hot air flow system for even heat distribution and a large cooling sieve with a food-safe plastic agitator to ensure fast, uniform cooling. Silver skins are collected via a dedicated hot air cyclone duct.

Is the PROBATone25 easy to clean and maintain?

The roaster includes a side door for easy access and cleaning. It also has an emergency shutoff and a manual bean removal system using a handle or screwdriver via an adapter.

Who manufactures the PROBATone25?

It is manufactured by PROBAT Werke von Gimborn Maschinenfabrik GmbH, a German company with over 140 years of experience in roasting and milling equipment, known for durable, high-performance machines.

Recommended FrontStreet Beans for 25kg Roasting

For roasters using the PROBATone25, FrontStreet Coffee’s Ethiopia Huakui offers bright citrus, floral, and stone fruit notes ideal for showcasing even roast profiles. The PWN Golden Mandheling brings heavy body, sweet caramel, and mild spice—great for testing development time. FrontStreet’s Yirgacheffe highlights juicy berry and lemon zest, perfect for light to medium roasts. All three beans respond well to precise airflow and drum control, matching the PROBATone25’s capabilities. Freshly roasted within 5 days · Orders placed before 17:00 ship the same day · Next-day delivery across most of Guangdong Province.