CATUndercarriage

2051320 Gear As- Idler — Cat 120H 120K

This is an idler gear, a crucial component of the undercarriage system that guides and supports the track. It is manufactured to meet stringent quality standards, ensuring durability and performance comparable to original equipment, unlike worn gears that exhibit excessive play and noise. Operators may notice increased track looseness, abnormal wear on the track chain, or a grinding noise when the idler gear fails.

Gear As- Idler – Part No 2051320 – 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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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 TypeIdler Gear
MaterialHardened Steel
ApplicationUndercarriage Track System
Service LifeReplace as needed based on wear inspection
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

Initial signs of idler gear failure include increased noise and vibration from the undercarriage. If left unaddressed, the gear can wear unevenly, leading to premature track wear and potential track derailment. Continued operation with a failing idler gear risks damage to other undercarriage components.

Installation Tip

Ensure the mounting surface is clean and free of debris before installation to prevent premature wear. Do not overtighten the mounting bolts, as this can damage the gear or mounting studs.

Service Note

Inspect the track chain, front idler, and track rollers for wear and damage when replacing the idler gear.