What is the main function of the moldboard on a road grader?

The moldboard is a vital component of a road grader, primarily designed to create a smooth and level surface during grading operations. It is positioned to effectively distribute soil and material, allowing the operator to reshape and contour the surface of roads, highways, and other areas requiring maintenance or construction.

When the grader is in operation, the moldboard's shape and angle can be adjusted, which helps in cutting, moving, and spreading material accurately, thereby achieving the desired surface quality. The effectiveness of the moldboard directly impacts the overall performance of the grader, making it essential for tasks such as leveling and providing proper drainage on roadways. This functionality is crucial for ensuring safe and drivable road surfaces, which highlights the moldboard's primary purpose.

Understanding this role underscores why creating a smooth surface is the central function of the moldboard in road grading operations.