General：

The roller box is used to ensure the material base necessary for the manufacture of rollers and garlands, necessary for mining units, the objective being to maintain the technical parameters of operation of high capacity equipment to ensure safe operation.

Working conditions:

Intense polluting environment with sterile dust, coal, clays, sand, etc;

Permanent trepidation regime;

Shock operation mode;

Average relative humidity in precipitation conditions: 50%;

Average relative humidity in loose condition 25-30%;

Nature: sandy clays; marne; clays; quartz and fine sands;

Average relative humidity in the layer: 20-32%;

Bearing 6308 C3