Indented Cylinders Overview
The document discusses the Indented Cylinders used for length grading in grain processing. These cylinders are available in single or double units and are constructed from special sheet steel with precision indentations.

Principle of Operation
Indented Cylinders operate by exploiting the length differences in grains, seeds, kernels, and other granular materials. The cylinders have thousands of precise pockets that lift materials of specific lengths, allowing for the separation of shorter materials from longer ones. This is particularly useful in rice mills for separating broken rice from head rice.

Design and Capacity
The cylinders are designed to carry and reject materials based on length. The capacity of these cylinders is influenced by the percentage of material that needs to be lifted by the indents. Typically, a smaller percentage of shorter material is removed from a larger portion of longer material.