There are so many crushs i the market, so when buying, you should know clearly about the material that you will crush, like its size, hardness, and you should have an idea of the output size of stones you want. To choose which kind of crusher will depend on your needs actually.According to the size and compression hardness of materials which need to be crushed, you need to choose proper type of rock crusher. Generally, cone crusher can crush mid-hard materials and it features high production capacity, low energy consumption and easy operation. To protect the crushers from overloading accidents, most of them are equipped with protective devices. Aside from the quality of the machine, the qualification of the operators is another factor which will matters the safety.Well, let"s begin with different crushers and their applications or functions to help you decide which kind of crusher machine is better for your work. Let"s start with jaw crusher. Frankly, jaw crusher is regarded as the most suitable choice for primary and secondary crushing for all kinds of materials and rocks with compressive strength less than 320 MPa. It is widely used in mining, or crushing building materials.Different from the compressive strength of jaw crusher, the compressive strength is much higher but less than 350 MPa. It is the popular machine in areas of road builing, railways, reservoir, electricity power and building materials crushing and so forth. Just as the use of jaw crusher, it is mainly used for primary and secondary crushing.Cone crusher is in operation with less steepness in the crushing chamber and more of a parallel zone between crushing zones. The rocks are broken by the cone crusher. The rocks and stones will be squeezed the rock between an eccentrically gyrating spindle. The crusher will become wedged and squeezed between the bowl liner and mantle when the rock materials enter into the top of the crusher machine. The large size stones or rocks will fall to a lower position...