What is the significance of the 4.00×9DT marking on the wheel rim of the stacker?

The marking of 4.00×9DT on the wheel rim of the stacker provides important specifications regarding the wheel's dimensions. Specifically, this notation signifies the width and the outer diameter of the wheel.

In this case, '4.00' represents the width of the wheel in inches, while '9' indicates the outer diameter, also in inches. Understanding this measurement is crucial for ensuring proper compatibility with the forklift and for adhering to safety and operational standards. This information helps in selecting the appropriate wheels for effective performance and stability during operation.

Contextually, options that refer to height, inner radius, or inner diameter do not align with the standard convention used in wheel dimensions, which focuses on width and outer diameter. Thus, the marking clearly and accurately indicates the dimensions that are necessary for fitting and functionality of the stacker's wheels.