CATBearing & Bushing

1077331 Bearing — Cat 777

This is a heavy-duty bearing designed to support significant loads and reduce friction in large-scale mining and construction equipment. Manufactured to meet rigorous OEM quality standards, it provides superior durability and smooth operation compared to a worn bearing that might exhibit excessive play or generate heat. Operators may notice increased noise, vibration, or a noticeable looseness in the component it supports when this bearing begins to fail.

Bearing – Part No 1077331 – CAT Spare Part
Part Specifications
BrandCAT
CategoryBearing & Bushing
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

Never strike bearings directly — use a bearing press or driver set. Heat housing (not bearing) to ease installation. Replace bearings in sets where applicable. Check housing bore diameter before fitting — out-of-round bores destroy new bearings.

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

Part TypeHeavy Duty Bearing
MaterialHardened Steel
ApplicationHeavy equipment drivetrain or pivot
Service LifeReplace as needed based on inspection
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

Initial signs of failure may include audible grinding or rumbling noises during operation and increased heat generation from the component housing. If left unaddressed, the bearing can wear excessively, leading to component misalignment and potential seizure. This can result in severe damage to surrounding drivetrain or structural components and significant equipment downtime.

Installation Tip

Thoroughly clean the bearing bore and the shaft, ensuring no debris or burrs are present that could damage the bearing surfaces. Use a proper press or induction heater for installation, applying force only to the stationary race.

Service Note

Inspect the shaft and housing for wear, and check the lubricant for any signs of metal particles or contamination.