Counter-roller crusher, also known as double-roller crusher or counter-roller crusher, is a kind of crushing equipment widely used in mining, chemical industry, building materials, coal and other industries.It is suitable for medium and fine crushing operations of ores and rocks below medium hardness, especially for raw coal crushing in the coal industry. It can be directly crushed without gangue removal, simplifying the coal preparation process and reducing investment and production costs.

Application case
The roller crusher produced by Xing Mine can be used for the production and processing of river pebbles, coal, shale, limestone and other ores, and various rocks, sand and gravel are made into construction sand of various particle sizes with uniform particle size, high compressive strength and purity, and no impurities.

The advantages of roller crushers include：

1.Compact structure, light weight and small size: for grinding systems with the same production capacity requirements, equipment with roller crushers can significantly save investment.
2.The structure is simple and takes up little space: it is more convenient to operate and maintain.
3.The interior is equipped with a dust-proof plate: the sealing performance is good, the splashing of fine materials after crushing is avoided, there is less dust and low working noise.
4.The abrasive roller body is re-optimized and designed: there is no need to change the grinding roller body for the lifetime of the equipment.
5.Equipped with replaceable wear-resistant liners: The wear-resistant liners are made of domestic advanced wear-resistant materials, which have the advantages of long service life, not easy to damage, and easy maintenance.
6.Equipped with a safety protection device: when an accidental metal iron piece enters the crushing chamber, the protection device moves, and the iron piece leaks out of the equipment and the equipment is operating normally.

The working principle of the roller crusher is to squeeze and shear the material through two relatively rotating rollers to achieve crushing.The material falls between the two rollers from the inlet. As the roller rotates, the material is squeezed and cut. After reaching the required particle size, it is discharged from under the chassis.

The roller crusher is mainly composed of the following parts：

Roller: Made of wear-resistant material, it is the working part of the crusher.
Roller support bearings: support the roller and keep the roller running stably.
Compression and adjustment device: used to adjust the gap between the two rollers to control the particle size of the discharge.
Drive device: including an electric motor and a reducer to provide power for the rollers.
Rack and protective cover: fix the structure of the whole machine, and the protective cover ensures safe operation

The technical parameters of the roller crusher include roller diameter, roller length, motor power, processing capacity and weight.These parameters directly affect the crushing effect and production capacity