How is the HYEX self-propelled?

The self-propelled capability of the Hydraulic Excavator (HYEX) is achieved through the use of two-speed hydraulic travel motors. This system allows for efficient movement across various terrains and conditions by providing the excavator with two speed settings. The two-speed design enhances versatility, allowing operators to select a lower speed for increased torque during challenging tasks—like climbing a slope or working in soft ground—and a higher speed for faster travel across level surfaces. The hydraulic travel motors ensure that the excavator harnesses the hydraulic system's power, translating it effectively into movement while providing the necessary control and stability.

Other options do not correctly represent how the HYEX propels itself. Using a single hydraulic motor may lack the required torque and speed variability for effective movement in varied conditions. Four-wheel drive is generally associated with vehicles rather than excavators, which typically utilize tracked systems for stability. A gasoline engine is not the primary power source for an excavator, as they are predominantly powered by diesel engines, which are more suitable for continuous heavy-duty operations.