PROBAT Launches GT Series Roller Mills With Compact Automated Gap Control

PROBAT has introduced the GT Series, a four-model line of roll grinders that brings active inline gap adjustment, a new dosing system that removes the slide gate, and a single-belt drive to industrial coffee grinding at throughputs reaching 1,800 kg per hour. The company positions the GT line as the entry to its grinding portfolio and as a new standard for reliable, high-precision performance.

The GT lineup is offered in four models with distinct capacity bands and fineness targets: GT 300.2 at 500–800 kg/h for Espresso–Filter; GT 300.3 at 320–950 kg/h for Fine–Filter; GT 600.2 at 1,000–1,500 kg/h for Espresso–Filter; and GT 600.3 at 650–1,800 kg/h for Fine–Filter. PROBAT product materials list grinding stages of two to three pairs of rolls and a grain size distribution that covers Fine to Filter grades.

Mechanically, PROBAT designed the GT machines around a single-belt, single-drive architecture to simplify servicing and reduce footprint. PROBAT product information describes the belt drive as space-saving and energy-optimized; Comunicaffe reporting adds that a single engine can power both the grinding rolls and the turbo mixer. The GT also uses water-cooled rolls for temperature control and a high-torque drive to maintain consistent performance across production runs.

PROBAT built the GT around automated gap control and a revised feed arrangement. The GT Series features active gap adjustment as standard and an integrated dosing mechanism that “enables complete regulation of product flow, improving accuracy and lowering operational costs,” per PROBAT product copy. Research Engineer Dietmar Wißen said the system reacts automatically to recipe deviations: “As soon as a deviation from the target value in the recipe occurs, the distance between the two lower rolls is automatically adjusted. This reduces fluctuations in grain size distribution to a minimum while enabling consistently high throughput.”

PROBAT frames the GT as compact and maintenance-friendly compared with its earlier UW machines. Product Manager Julian Jansen described the line as “the entry to the Probat grinding portfolio” and “a quality yet no-fuss machine.” Daily Coffee News coverage of the launch noted that the GT 300.3 is 15% shorter and requires 25% less floor space than the UW 300.3, and that the GT 600 models replace the UW 500 series while UW 300 grinders remain available for fineness ranges not covered by GT.

A GT 300.3 was shown at HostMilano last October in Italy, with images circulated in industry coverage. PROBAT’s marketing language for the range sums the pitch: “Built to solve. Designed to deliver.” The company’s published materials specify throughput performance and feature lists but do not include pricing or a global availability schedule, leaving those commercial details to be confirmed by customers and distributors.