The DH220 Excavator Undercarriage Parts 22701098 Bottom Roller, Lower Roller, and Track Roller are integral components of the excavator's undercarriage system. These parts play a crucial role in ensuring the smooth and efficient operation of the excavator. Here's a brief introduction to this product:         1. Function and Purpose: The bottom roller, lower roller, and track roller work in unison to provide stability and support to the excavator. These rollers distribute the weight of the excavator evenly across the tracks, reducing stress on the undercarriage system and ensuring optimal performance. They also guide the movement of the excavator, enabling it to traverse rough terrains smoothly and efficiently. 2. Compatibility and Fitment: The DH220 Excavator Undercarriage Parts 22701098 are specifically designed for use in DH220 excavators. It is important to ensure that the parts are compatible with your excavator's make and model to avoid any fitment issues. Consulting the manufacturer's specifications or seeking professional advice is always recommended when replacing undercarriage parts. In summary, the DH220 Excavator Undercarriage Parts 22701098 Bottom Roller, Lower Roller, and Track Roller are essential components that contribute to the excavator's stability, performance, and longevity. Regular maintenance and the use of high-quality replacement parts are crucial to keeping your excavator in optimal condition.