The top weight on the motor shaft rotates in a plane close to the center of the mass of assembly. Rotation of the top eccentric weight creates vibration in the horizonatal plane which causes material to move across the screen cloth toperiphery. Increasing the top eccentric mass increases the horizonatal throw causing over size material to discharge at a faster rate.

The bottom eccentric weight rotates below the center of vibrating mass creating tilt on the screen giving vibration in vertical & tangential planes. Increasing the vertical component of motion promotes turn over of material on the screen surface helping maximum quantity of undersize material to pass through the screen. The effective vertical motion helps in minimizing blinding of screen by near size particles.

The tangential component of motion is controlled by the angle of lead given to bottom weights with relation to top weight.

Vartiation in lead angle controls the spiral pattern of material travel over the screen cloth. Speed & Flow pattern of material travel over the screen cloth can be set by the operator for maximum through put & screening efficiency for any screenable Product.... Wet or Dry.... Coarse or Fine.... Heavy or Light.... Hot or Cold. Typical material travel patterns generated at various lead angles are shown below:

The material is fed on to the center of top screen. The undersize material passes rapidly through the screen during its travel to the periphery. The over size material gets continuously discharged through a tangential outlet. Gyroscreens are equipped to handle upto five different screens one on the top of the other with feed trays in between to give six precise sized fraction in single screening operation.

Special design with seven screens is also available for grading.