Top rollers, also called upper rollers or carrier rollers, are important components in the "four wheels and one track" system of the crawler undercarriage parts for earth moving equipment such as excavators, loaders, crane clawers and bulldozers. The top rollers are located above the track and support the track from above, preventing excessive sagging caused by the track’s own weight or vibrations during movement. This ensures the track maintains proper tension and avoids derailment caused by loosening.
Read More