The difference between impact crusher and hammer crusher is that impact crusher is a kind of crushing machinery that uses impact energy to crush materials. Crushing equipment can handle all kinds of materials with particle size less than 500mm and compressive strength less than 360mpa. It has the characteristics of large crushing ratio, high crushing efficiency and convenient maintenance. The product is cubic, which is an ideal processing equipment for aggregate used in advanced highway pavement and hydropower construction. Impact crusher is widely used in expressway construction, water conservancy project and building sand processing for its excellent performance and good service performance. The working part of the hammer crusher of Shaolin mining machine is many hammers hinged on the turntable according to certain rules. When the turntable tells to rotate, the hammer hits the material loaded into the machine due to centrifugal force and rotating force, which breaks it. At the same time, the hit stones collide with each other and with the lining plate and grate in the machine, which also promotes the material to be broken. There are two kinds of common hammer crushers: single rotor and double rotor. According to the arrangement of hammers on the turntable, there are single row hammers and multiple rows hammers, and the rotation of the rotor can be reversible or irreversible. In addition, there are some simple hammer crushers, such as cross hammer crushers and link crushers. Among them, the most widely used is the single-rotor multi-row hammer crusher. Hammer crusher is generally suitable for brittle materials with water content less than 12% and compressive strength less than 120MPA, such as limestone, oil shale, slag and coal. The advantages of hammer crusher are: 1. Simple structure, small volume, small dead weight and low power consumption per unit product. 2. High productivity, large crushing ratio, small and uniform product granularity, cubic shape and less excessive crushing. 3. Continuous and reliable work, convenient maintenance and easy inspection and replacement of wearing parts. Wearable parts of hammer crusher: The parts that are in direct contact with materials in hammer crusher, such as hammer head, liner and grate, wear quickly and need to be replaced frequently.