VSI6XVertical Shaft Impact Crusher is a newly-developed and highly-efficient stone-crushing and sand-making machine with many national patent technologies. This machine adopts years of research and development experience and technical philosophy. Technologies such as new design of four opening impeller structure and special seal structure, which can prevent oil leak from bearing cylinder, are adopted. This machine has characteristics as high efficiency and energy saving, long service life and wide application, etc. It will help big sand making plants gradually become large-scale and centralized production in order to meet the national requirements on environmental protection and productivity.