This machine is smooth double roll crusher for geology, metallurgy, building materials, chemicals, coal, mineral processing, research institutes, universities and other units of laboratories, laboratory crushing all kinds of medium and low hardness ore or rock purposes, the compressive strength of not more than 700 kg / cm 2. This machine is mainly composed of the body such as spring rolls and security components, transmission mode by an electric motor through a closed triangle belt, sprocket two rolls rotating in opposite directions, broken material. Roll gap can be appropriately adjusted within a specified range, in order to control the particle size of the material. http://www.jxscmachine.com