This is a bottom roller, also known as a track roller, which is a vital part of the excavator's undercarriage system, supporting the weight of the machine and guiding the track chain. It is constructed from hardened steel to withstand extreme loads and abrasion, offering superior longevity over worn rollers that can cause track derailment and excessive wear. Operators may notice increased noise, vibration, or uneven track movement when this roller begins to fail.
Always verify with serial number before ordering.
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Cross-reference part number with serial number before ordering to confirm fitment. Keep original parts until new ones are confirmed correct. Record part numbers replaced for future reference.
Always consult the OEM service manual for model-specific torque values and procedures. WhatsApp our technical team if you need fitment guidance.
A failing bottom roller may initially produce a rhythmic clanking or grinding sound as the machine operates. If not replaced, the roller can seize or break, potentially causing the track chain to derail, leading to significant downtime. Continued operation with a damaged roller risks accelerated wear on the entire undercarriage system, including the track links and idlers.
Ensure the mounting surface on the undercarriage frame is clean and free of debris before installing the new roller. Properly align the roller with the track chain to prevent binding during initial operation.
Inspect the track chain for wear, check the tensioning system, and examine adjacent rollers and idlers for damage during roller replacement.