Cone mills are a unique combination of crushing speed, eccentricity, and a crushing chamber. This concept offers greater output, higher quality of the end product and flexibility of applications. Whether they are soft or very hard and abrasive materials, whether large size products or sand should be produced, the performance of cone mills, in secondary or tertiary operation are very high. The cone mills are equipped with a dual effect protection system against uncrushable bodies, which would block any other machine, making it possible to empty the crushing chamber without manual intervention. In addition, cone mills are supplied with hydraulic control unit and electronic management device.