Excavator idler wheels, also known as guide wheels or front idlers.Located at the front end of the track system, their main role is to guide the tracks for proper operation and adjust their tension. Idler wheels are typically made from wear-resistant, high-strength steel, such as 42CrMo or 40Cr, to ensure optimal performance even in harsh working conditions. The surface of these wheels undergoes special heat treatments, like quenching and tempering, to enhance their wear resistance and impact resilience.