What factor does not typically influence the gradeability of an excavator?

The gradeability of an excavator, which refers to its ability to operate on slopes or inclines, is primarily influenced by several critical factors, such as the weight of the machine, the type of terrain, and the traction provided by its tracks. The weight of the machine impacts its stability and the amount of force it can exert against gravity when climbing an incline. The type of terrain affects how the excavator interacts with the ground, as softer or uneven surfaces can impede performance. Additionally, traction provided by the tracks is crucial, as it determines how well the excavator can grip the surface while navigating slopes.

The length of the excavator's arm, while important for reach and digging depth, does not typically affect its gradeability. The arm's length is more relevant to the machine's operational capabilities rather than its ability to climb or traverse slopes, making it the factor that does not play a direct role in determining how steep an incline the excavator can handle.