CATUndercarriage

527-3878-372-5958 Bottom Track Roller — Cat Mini Excavator 300 9D

This bottom track roller is a vital part of the undercarriage system, designed to support the weight of the machine and guide the track chain. It is built with durable materials and precision engineering to withstand constant abrasion and impact, offering superior longevity over a worn roller. Operators may notice increased noise, vibration, or uneven track wear when this roller begins to fail.

Bottom Track Roller – Part No 527-3878-372-5958 – CAT Spare Part
Part Specifications
BrandCAT
CategoryUndercarriage
ConditionAftermarket — OEM Specification
DispatchSame-day from Mumbai (before 3 PM IST)
GST InvoiceAvailable — all orders
Export DocsCommercial invoice, packing list, COO

Compatible Models

Always verify with serial number before ordering.

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Parts Trading Company  ·  Mumbai, Est. 1956  ·  Same-day dispatch  ·  Ships worldwide  ·  GST invoice included

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Installation & Application Notes

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.

Part TypeBottom Track Roller
MaterialHardened Steel
ApplicationUndercarriage Track System
Service LifeReplace based on wear inspection
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

Early signs of a failing bottom track roller include increased noise, such as grinding or squealing, and noticeable vibration transmitted through the machine. If ignored, this can lead to accelerated wear on the track chain and other undercarriage components. Continued operation risks track derailment and potential damage to the undercarriage structure.

Installation Tip

Ensure the mounting surface and the track chain are clean and free of debris before installing the new roller. Do not overtighten the mounting bolts, as this can damage the threads or the roller assembly.

Service Note

Inspect the track chain, idlers, and final drive for any signs of wear or damage when replacing a bottom track roller.