Ovality     Enlarge Image       Diagram explains relation between static state of the shell at the tire (left half) and the dynamic state (right half). Measuring the difference in diameter of the shell under the tire and diameter of the inside of the tire is an important parameter from perspective of kiln geometry. Ovality, or continuous flattening of the shell at rotation, is equally important operational parameter for the brick lining condition and shell mechanical stability.   Specific ratio to describe the tolerance is established from the measurements.       Detailed explanation and examples can be found on Information page.