(1) Edge effect

Due to the influence of the structure of Raymond mill and the wear of the two side baffle plates, many unbroken particles are transported out with the extruded material cake. The material escaped from the side makes the pressure of the extrusion roll line unevenly distributed.

(2) Vibration and blocking run

The main reason of roller vibration is that the feeding material is not uniform and the feeding particle size distribution is too wide. Too much feed will cause the phenomenon of blocking run.

(3) Wear and repair of the extrusion roll

Usually, the surface of the extruded roll is made by surfacing welding. Cracks and peeling of the roll surface often occur in this kind of structure during operation, and axle breaking accidents are more serious.

(4) Life of bearing

The force required for crushing materials of Raymond mill is provided by the hydraulic system, which can reach hundreds of thousands.