CATEngine Parts

2295156 Main Bearing (Thrust) — Cat 120H 120H ES

This thrust main bearing is a critical component of the engine's crankshaft assembly, controlling axial movement and maintaining proper oil clearance. It is manufactured to meet stringent OEM quality standards, ensuring superior durability and performance compared to worn bearings that exhibit excessive play. Operators may notice increased engine noise, reduced oil pressure, or a knocking sound when this bearing begins to fail.

Main Bearing (Thrust) – Part No 2295156 – CAT Spare Part
Part Specifications
BrandCAT
CategoryEngine Parts
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

Inspect mating surfaces for wear before fitting. Use torque specs from service manual. Replace gaskets and seals as a set — reusing compressed gaskets causes oil leaks. Clean all oil passages with compressed air.

Always consult the OEM service manual for model-specific torque values and procedures. WhatsApp our technical team if you need fitment guidance.

Part TypeMain Bearing (Thrust)
MaterialSteel-backed babbitt
ApplicationEngine crankshaft assembly
Service LifeReplace every 5,000 hrs or as needed
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

The first sign of a failing thrust main bearing is often an audible knocking or rattling sound from the engine, especially during acceleration or deceleration. If left unaddressed, this can lead to increased crankshaft end play, potentially causing damage to other internal engine components. Continued operation with a worn thrust bearing risks severe engine damage and costly repairs.

Installation Tip

Ensure the crankshaft journals are meticulously cleaned and free of any debris before installation to prevent premature wear. Avoid rotating the crankshaft until all bearings are properly seated and lubricated.

Service Note

Inspect the crankshaft journals for scoring or wear, and check the oil pump for proper pressure when replacing main bearings.