ALASKA INDIA

Bhullanpur, Varanasi, Uttar Pradesh

A jaw or toggle crusher consists of a set of vertical jaws, one jaw being fixed and the other being moved back and forth relative to it by a cam or pitman mechanism. The jaws are farther apart at the top then at the bottom, forming a tapered chute so that the material is crushed progressively smaller and smaller as it travels downward until it is small enough to escape from the bottom opening. The movement of the jaw can be quite small, since complete crushing is not performed in one stroke. The inertia required to crush the material is provided by a weighted flywheel that moves a shaft creating an eccentric motion that cause closing of the gap.
Single and double toggle jaw crushers are constructed of heavy duty fabricated plate frames with reinforcing ribs throughout. The crushers components are of high strength design to accept high power draw. Manganese steel is used for both fixed and movable jaw faces. Heavy flywheels allow crushing peaks on tough materials. Double Toggle jaw crushers may feature hydraulic toggle adjusting mechanisms.

VSI crushers use a different approach involving a high rotor with wear resistant tips and a crushing chamber designed to throw the rock against. The VSI crushers utilize velocity rather than surface force as the predominant force to break rock. In its natural slate, rock has a jagged and uneven surface.Applying surface force (pressure) results in unpredictable and typically non-cubicle resulting particles.Utilizing velocity rather than surface force allows the breaking force to be applied evenly both across the surface of the rock as well as through the mass of the rock. Rock, regardless of size, has natural fissures (faults) throghout its structure. As rock is thrown by a VSI Rotor against a solid anvil, it fractures and breaks along these fissures.
Final particle size can be controlled by:

• The velocity at which the rock is thrown against the anvil.

• The distance between the end of rotor and the impact point on the anvil.

• The product resulting from by modern SUPERPAVE highway asphalt applications. Using this method also allows materials with much higher abrasiveness to be crushed than is capable with an HSI and most other crushing methods.