CATBearing & Bushing

2778576 Bearing — Cat 307 308

This bearing is engineered to minimize friction and support loads in the operating systems of compact excavators. Manufactured to meet rigorous Caterpillar standards, it provides enhanced durability and smooth operation compared to a worn bearing that might exhibit roughness or play. Operators may notice increased noise, vibration, or a decrease in the responsiveness of the machine's functions if this bearing is failing.

Bearing – Part No 2778576 – 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 TypeBearing
MaterialSteel alloy
ApplicationExcavator operating systems
Service LifeReplace based on inspection and operational hours
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

The first sign of a failing bearing is often an unusual noise, such as a grinding or squealing sound, emanating from the affected area. If ignored, this can lead to increased vibration and heat, potentially causing binding or seizure of the component. The consequence is impaired machine function and potential damage to surrounding parts.

Installation Tip

Ensure the housing and shaft are thoroughly cleaned to prevent any grit from entering the new bearing. Never use a hammer to drive the bearing into place; use a proper press or driver.

Service Note

Inspect related hydraulic components, seals, and mounting hardware for any signs of wear or damage.