Hyundai 210 Track Rollers are designed to support the weight of the machine and guide the track chain as it moves along the track. The track rollers are typically made of high-quality steel to withstand the heavy loads and stresses encountered during operation. They are mounted on a shaft and rotate freely to reduce friction and wear on the track chain. The Hyundai 210 Track Rollers are also designed with a sealing system to prevent dirt and debris from entering the bearing, which can cause premature wear and damage.