Brief  introduction:
  Roller crusher is widely used in cement, metallurgy, chemical industry,electric power, coal industries,etc.According to the number of rollers, it can be divided into double roller crusher and four roller crusher. It has the features of reliable operation, easy maintenance, low cost, adjustable discharging size,etc. 
Features:
1.Roller crusher has the characteristics of large breaking force, high efficiency, high crushing capacity, low operating cost and long service life. It is convenient to operate and is economical.
2. The crushed materials are of equal size, thus reducing circulating load.
3. Large and medium-sized crushers adopt cleaning systems, which will help reduce the down time.
4. As the overload protection device, spring safety device allows foreign matter and iron pieces to pass through the crushing chamber without jeopardizing machines.
Working principle:
  The motor drives the fixed roller and movable roller to work via reducer, V-belts or coupling. Materials are put into the space between the two rollers via the feed entrance. As the two rollers inward turning, the input materials are crushed, pressed, ground, and at last come out from the base of the machine.