China undercarriage lower roller supplier

The undercarriage lower roller, also known as a track roller or bottom roller. It is a key component of an excavator’s undercarriage system. These rollers posited along the bottom of the track frame to support the weight of the excavator and ensure smooth movement of the tracks across various terrains.



Usually, the lower rollers are made from high-quality materials like forged steel or cast iron. These high-quality materials have good durability and resistance to wear and impact. The lower rollers’ feature a cylindrical shape with precision-machined surfaces to reduce friction and distribute the weight of the excavator evenly across the track. Each lower roller rotates on a central shaft, which is mounted securely within the track frame. And The roller’s surface comes into direct contact with the track chain, providing support and guidance as the excavator moves.

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