Underscarriage parts of Track Rollers in Excavators and Bulldozers

Jan 16, 2024 | News


Track rollers are cylindrical components that are part of the undercarriage system of tracked vehicles like excavators and bulldozers. They are strategically positioned along the length of the vehicle’s tracks and are responsible for supporting the weight of the machine while enabling smooth movement over various terrains. Track rollers are typically made from high-strength steel to withstand heavy loads and resist wear and tear.


The primary function of track rollers is to facilitate the transfer of weight from the machine to the ground while reducing the level of friction encountered as the tracks move. They rotate on their axis as the tracks revolve around the undercarriage. By doing so, track rollers contribute to the reduction of strain on other undercarriage components and help to distribute the weight evenly, which is essential for maintaining stability and preventing track deformation.

Track rollers also absorb shocks and vibrations that occur during machine operation. This shock-absorbing capacity is crucial in preventing damage to the undercarriage and ensuring operator comfort. Furthermore, track rollers are designed to be sealed and lubricated for life, which minimizes maintenance requirements and enhances the longevity of the machinery.


Track rollers are used in a variety of heavy machinery that operates on tracks instead of wheels. The most common applications include:

– Excavators: In excavators, track rollers support the weight of the machine as it performs digging, lifting, and excavation tasks. They enable the excavator to move across uneven terrain with ease, providing stability during operations.

– Bulldozers: Bulldozers rely on track rollers to move across rough surfaces while pushing or spreading large quantities of material. The durability and support provided by track rollers allow bulldozers to perform heavy-duty tasks without sinking into soft ground or becoming unstable.