PROBATone25: Germany’s 25kg Commercial Coffee Roaster

Whether you’re scaling up a café roastery or building a small-batch production line, finding a roaster that balances capacity, consistency, and control isn’t easy. Many commercial machines either lack the precision for nuanced roasting or can’t maintain even development across larger batches. For specialty-focused businesses needing repeatable results at 20+ kilograms per run, the right equipment makes all the difference.

The PROBATone25 is a 25kg-capacity gas-heated coffee roaster designed for both commercial and café use, delivering consistent batches in 12–18 minutes with even internal and external bean development.

What Is the PROBATone25?

The PROBATone25 is a German-engineered coffee roaster built for specialty and commercial-scale operations. It handles batches between 20 and 25 kilograms, making it suitable for mid-volume producers who demand consistency without sacrificing control. Designed by PROBAT Werke von Gimborn Maschinenfabrik GmbH—a company with over 140 years in roasting machinery—this model merges industrial durability with precision engineering tailored for specialty profiles.

How the PROBATone25 Delivers Uniform Roasts

To achieve even roast development across large batches, the PROBATone25 incorporates multiple advanced systems:

• Mechanical stirring mechanism: A professionally designed agitator ensures consistent bean mixing throughout the roast cycle, enhancing uniformity.
• Special heat airflow system: Delivers evenly distributed hot air to maintain consistent internal and external bean temperatures, improving homogeneity across the batch.
• Adjustable gas heating: Offers flexible temperature control throughout the roast, allowing roasters to fine-tune profiles for different beans.
• Separate cooling system: Features a large cooling sieve with food-safe plastic agitation to rapidly and uniformly cool roasted beans post-cycle.

Key Technical Features and Workflow Design

Beyond the agitation and airflow, the PROBATone25 includes several functional design elements that support both performance and maintenance:

• Roasting and cooling systems: Each is driven by independent motors, enabling precise, individual control over roast dynamics and cooling speed.
• Synchronized exhaust system: Separates hot and cold airflow pathways, reducing overall roast cycle time.
• Digital displays: Shows real-time time and temperature data throughout the roast for accurate monitoring.
• Alarm system: Automatically cuts power in case of emergencies.
• Bean discharge: Can be manually activated using a handle or screwdriver via an adapter for safe removal if needed.
• Silver skin collection: Utilizes a dedicated hot air cyclone for effective chaff management.
• Cleaning access: Side door allows for straightforward equipment cleaning.
• Construction: Boasts a stylish, elegant exterior with high-quality cast components and improved boiler technology for safe, reliable heating.

About PROBAT and Local Support in China

PROBAT Werke von Gimborn Maschinenfabrik GmbH, founded in 1868, has manufactured roasting and milling equipment for over 140 years. The company is globally recognised for producing machinery that is economical, flexible, high-quality, and long-lasting—with many units operating reliably for 30 years or more. This reliability underscores PROBAT’s reputation as a secure investment for commercial roasting operations.

Beyond machines, PROBAT provides a full suite of services including maintenance, system installation, startup support, overhauls, and training. In China, FrontStreet Coffee represents PROBAT, supplying high-quality roasting equipment and offering professional technical support tailored to the local market.

Frequently Asked Questions

What batch size does the PROBATone25 handle?

The PROBATone25 is designed for commercial and café use, roasting batches between 20 and 25 kilograms per run. This capacity suits medium-volume roasting operations looking for consistent results at scale.

How long does a typical roast take on the PROBATone25?

A standard roast cycle on the PROBATone25 takes between 12 and 18 minutes, depending on the bean type, roast profile, and desired development level.

What kind of heating system does the PROBATone25 use?

The roaster uses gas heating, with adjustable controls that allow roasters to modify temperature dynamically throughout the roast for precise profile development.

How does the PROBATone25 ensure even roast profiles?

It features a professional mechanical stirring mechanism and a special heat airflow system that distributes temperature evenly. This combination promotes consistent internal and external bean development, improving roast homogeneity.

Does the PROBATone25 have a cooling system?

Yes, it includes a large cooling sieve with a food-safe plastic stirring device that ensures roasted beans are cooled quickly and uniformly after the roast cycle.

Is the PROBATone25 easy to clean and maintain?

The roaster has a side door for easy cleaning access and includes a dedicated silver skin collection system. Its independent motor-driven systems for roasting and cooling also help streamline maintenance and operation.

Who supports PROBAT equipment in China?

In China, FrontStreet Coffee represents PROBAT, providing not only the roasting equipment but also professional after-sales service and technical support tailored for the local coffee market.

Recommended FrontStreet Beans for 25kg Roasting

For roasters using the PROBATone25, FrontStreet Coffee’s Ethiopia Humbera offers vibrant citrus, floral, and juicy body—ideal for showcasing even roast development at scale. The PWN Golden Mandheling brings heavy body, sweet caramel, and mild spice, perfect for testing roast profiles with bold base notes. Both beans highlight the PROBATone25’s ability to produce uniform, high-quality results across 20–25kg batches. Freshly roasted within 5 days · Orders placed before 17:00 ship the same day · Next-day delivery across most of Guangdong Province.