Roll Grinders

The perfect combination

After the roasting process the beans are ground. This critical process must be as homogeneous and gentle as possible. The best flavor can only be achieved later if the best beans are combined with perfect roasting and the right grinding process. The grain size and density determine how the coffee reacts during brewing.

The compactly designed PROBAT standard and special two-stage or three-stage grinders are configured to grind beans gradually. Depending on the model, it’s possible to process up to 4,000 kilograms per hour (kg/h) (with special grinders, up to 2,570 kg/h). A compressor is also integrated for over 30% more compression. If that’s not enough, an additional compressor can be connected separately. (Remote) computer-controlled operations offer a high degree of safety, control, and consistent results.

The clear difference
The PROBAT grinders are designed to last a long time with little need for maintenance. Sound workmanship ensures wear-resistant operation over the long run with no interruptions. The split roller bearing housing makes it possible to exchange rollers easily in case of a fault. The specially designed profiles can be repeatedly refurbished if necessary.

Closed, dust-proof housings and special protection mechanisms against contamination by foreign bodies protect these grinders. Special guiding plates with polished surfaces prevent deposits from forming. Effective cleaning systems stop the build-up of products inside the grinders. The easy-to-access cleaning ports feature a practical and user-friendly design.

Experts at work
The special grinders are even more sophisticated. . Frequency-controlled motors in each grinder propel the large, water-cooled grinding rolls. The grain spectrum can specifically be influenced by individually controlling the relative speed of the grinding rolls, making it possible for the grinders to master even the most difficult of tasks, such as products for capsules and ultra-fine grinds. Their modular design makes it possible to adapt the number of rolls to the requirements of the coffee. The motor-driven grinding gap adjuster simplifies the configuration and calibration of the roller gap. A second outlet without a densifier allows the extraction of uncompacted ground coffee.

PROBAT 300 and 500 Series Roll Grinders

All PROBAT roll grinders are equipped with a water-cooled turbo mixer that specifically crushes residual chaff once again and homogeneously mixes the entire product. The densifier attached to the grinder’s outlet can compact the coffee to a constant level, if so desired. With the PROBAT roll grinder series, we offer every type of grinder for your individual requirements.

Benefits for your coffee

While the 500 series’ operating range stretches from a coarse grind for filter coffee to the finest espresso grind, the 300 series was also designed for grind levels up to a microfine grind. PROBAT roll grinders offer the following benefits:

Compliance with the food industry’s most stringent hygiene protection requirements through the exclusive use of stainless steel
Ability to process all types of roast coffee
Ability to individually adjust the grinding capacity
Reproducibility of all grinding levels
Optimum range of grain sizes thanks to grinding rolls’ specially designed corrugation
Flavor preservation through a limited increase in temperature during the grinding and compacting process
Uniform ground coffee appearance due to the turbo mixer homogeneously mixing any chaff remaining in the coffee with the final product
Modular design for customized solutions

Best Life-cycle Costs and Performance

Control

All PROBAT roll grinders are equipped with the PILOT Grinder Excellence control system. In this context, high-quality hardware and software guarantee maximum production reliability.

Flexible recipe creation through presetting the respective parameters
Can be operated directly at the grinder or centrally from a control room
Easy-to-read visualization and simple operation
Saved settings are reproduced reliably and automatically
Transparent visualization of the system’s operating status in real time
Overview of all key recipe and machine parameters
Standardized data interface allows the system to be integrated into plant control systems and makes it possible to export productionrelated data to other systems
Models in the 300 series of PROBAT roll grinders are equipped with automatic calibration of the grinding gap adjustment
Display of the actual value of the grinding gap prevents misadjustments

Cost-Effectiveness

PROBAT roll grinders are high performance grinding solutions that can be used for specific applications and recipes. They are flexible, offer constant, high-quality results and guarantee process stability.

Energy-efficient crushing thanks to specially developed roll corrugation
Quiet, energy-efficient drive
Short downtimes when changing products thanks to easy accessibility of all parts requiring cleaning and maintenance
Polished inner surface prevents the formation of deposits
Long maintenance intervals due to the long life of the grinding rolls and automatic cleaning of the baffle plates
Increase of the bulk and tamped density of the ground coffee using an infinitely adjustable compactor
Rapid replacement of the grinding rolls without affecting the grinding gap thanks to split bearing housings
Grinding rolls can be refurbished and recorrugated

Safety

PROBAT safety technology goes far beyond standardized requirements. We offer safety components that guarantee maximum process security.

Magnetic metals prevented from entering the grinder thanks to the standard inclusion of a permanent magnet at the infeed point
Spring-mounted rolls prevent damage caused by foreign materials
Automatic locking of maintenance openings during operation
Integrated CO extraction
Monitoring of the product and cooling water temperature
Monitoring of bearing temperature and vibration displays how smoothly the grinder is operating

Px120 DRUM ROASTER

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