Vertical Shaft Impact

Processed material has a high percentage of fine with a cubical shape. There are impact armors instead of rock reservoirs in VSI crushers that have a close-type rotor.

There are 3 types of crushing chambers that can be installed according to the application.

1. Stone box system with closed rotor: This system will be generally used for processing the most abrasive and hard materials. In addition to that this system offers the lowest costs in maintenance expenses.
2. Anvil system with closed rotor: This system will be generally used for processing the medium abrasiveness and hardness. In addition to that this system combines closed rotor systems with low maintenance costs and anvil systems with high and homogenous crushing.
3. Anvil system with open rotor: This system will be generally used for processing less abrasive and soft material. This system offers a high crushing percentage and has the advantage of accepting larger materials.

There are 2 types of VSI crusher rotors that depend on material abrasiveness. We are suggesting an open rotor system for low abrasiveness and soft materials; closed rotor systems for abrasive and hard materials.

By the effect of centrifugal force, fed material acts as a lining in a closed-type rotor system. Feed material covers the inner surfaces of the crusher and prevents wear. In addition to that, there are wear-resistant diamond launchers on the area of materials that go out from the rotor. This design makes it possible to crush more abrasive materials and reduces maintenance costs.

If we compare open and closed rotor systems we can say that open rotor systems have 3 advantages which are;

- higher crushing ratio,
- higher production and
- simple maintenance.

“Anvil ring” part is an optional accessory for crushing soft and low abrasive materials.

Gradation is adjustable by changing rotor speed (rpm).

GUR-SAN VSI crushers have also a cascade system. In case of demand, the material can be fed directly inside the rotor or some of them may be cascaded into the crushing chamber, bypassing the rotor. In this case, both aggregate and sand production can be made cubical. Especially it will be useful after cone crusher processing.