PG roll crusher is mainly used for the crushing of rocks of medium or lower rigidity like coking coal, agglomerate, limestone, etc. It is most suitable for the mid-crushing and fine crushing work in non-metal mines of medium and small scale and chemical industries. The smallest discharge granularity could be less than 100 meshes. It has simple structure, convenient maintenance, and the clearance between the two rollers to get the demanded output size. This machine could avoid the over-crush phenomenon and it has stable performance.