This grinder is provided with cast iron helical gears in a complete oil bath, grease nipples and a modern system for fastening the scraping blades which make it extremely sturdy, reliable and also very fast and easy to clean. Its robust structure includes a steel sheet base and cast-iron shoulders, making it an undisputed leader in the field of mixers. The perfectly faced porry cylinders may be separated from each other by a handwheel but still remain perfectly parallel. The rear cylinder turns on its axis for better refining. The machine is equipped with accident prevention features as well as a low voltage 24V electrical system in accordance with safety regulations.