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VSI－IV Series High-efficiency Vertical Shaft Impact Crusher Stone Shaping Machine.
   VSI—IV is our latest product from Germany authoritative experts’ design, connecting with Chinese present working conditions. It’s the high—efficiency sand making equipment with advanced world levels in our country. It is the preferred equipment for artificial sand making and stone reshaping industry. It specially provides the best material for the highway，high-speed railway，high-rise buildings，municipal works，hydro-electric dam and concrete mixing station. It ranks first among similar products with its excellent cost performance and reliability.
Usable range:
1. Pebble，rock( the limestone, granite, basalt, grey aluminum ore, andesite, etc.), ore tailings, artificial sand production.
2. Building aggregate, highway, cushion, asphalt concrete and cement aggregate production.
3. Sand making production and stone reshaping production in water conservancy and hydropower engineering field，highway，railway，bridge，passenger line，airport runway，municipal engineering and high-rise buildings.
4. The grinding anterior fine process of mining areas. Building materials，mining，metallurgy， chemical，cement，abrasive，refractory material, etc.
5.  The crush of high abrasive materials resistance and secondary disassembly, desulphuration of thermal power and metallurgy, slag and construction waste.
6. The production of glass，quartz sand and other high purity material.
Equipment features and Technical advantages:
1. Large handling capacity and High output—*****0t/h, the output of VSI has been stably increased *0% comparing with the traditional equipment under the same motor power.
2. Low wearing parts consumption—Perfect impact angle design of the crushing cavity, less friction against the wearing parts. The operation cost reduces *0%.
3. Perfect product shape — Cubic products, suitable proportion and adjustable fineness modulus. It fits especially man-made sand and stone reshaping. The effect of making and reshaping sand has been increased *0% compared with the traditional equipment.
4. Hydraulic devices are maintained easily—Hydraulic door-opened device make the repair in the crushing cavity easily .Shorten downtime and save effort.
5. Automatic test, safe and reliable—Vibration display and warning device are set. The machine will be warned to stop working when abnormal phenomenon appears.
6. Thinning oil lubricant and automatic maintenance—The original German thinning oil lubricant station, double-pump injection system guarantees the oil supply. The machine will stop automatically when there is no oil and pressure. Water cools the oil and electric motor is heated in winter.
7. Easy installation and operation—Light weight，various forms of installation，movable installation. Easy installation，repair and maintenance. Once the specific use is cleared, VSI crusher can maximize its excellent performance by only minor adjustment.
8. Multi-functions and Flexible application—Due to the unique feeding crushing structure and various kinds of crushing cavities. It is easy to change “rock-rock” to “rock-iron”. So that it achieves the multi-use in one machine. If customers want to change the function of the machine, without making big adjustment, the machine can satisfy for customers’ various need. Sand making，reshaping，abrasion，etc.
9. International quality guarantee—The most advanced technology of Germany, and the internal and external quality has been greatly improved by advanced riveting technology. And appearance sand blasting，derusting and spray-paint technology of car. The core components are all international branded (adopting high precision grade TIMKEN rolling shaft). And make sure the lowest failure rate.
*0. New environment protection- Less noisy and pollution. It can be equipped with new dustproof devices, which benefit the environment.

     Working principle:
The entire center feeding: Material falls the feed hopper, then enters the high-speed rotary sling wheel from center feeding hole, which is speeded immediately in the sling wheel. The speed can reach several dozens times of the gravity acceleration. Then it is thrown from the sling wheel. First, it is crushed with other rebounded material falled freely from the sling wheel. Then both of them are impacted to the material lining(rock-rock) or strike back block(rock-iron), rebounded and striked to the top of eddy cavity in the inclined-up direction. Then it moves along deflection-down. And forms a continuous material curtain with the material from the impellers passage. Just like this, the material is striked, fricted, crushed twice or more, then is discharged from the down discharging hole.