CATBearing & Bushing

5N8377 Bearing-Drive Shaft — Cat 3412 3508

This is a drive shaft bearing designed to support the rotating drive shaft, ensuring smooth power transmission and minimizing vibration within the drivetrain system. Manufactured to meet Caterpillar's stringent quality requirements, it offers excellent load-carrying capacity and longevity compared to a worn bearing with excessive play. Operators may experience drivetrain vibrations, unusual noises, or a loss of power transfer if this bearing fails.

Bearing-Drive Shaft – Part No 5N8377 – 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 TypeDrive Shaft Bearing
MaterialHardened Steel
ApplicationDrivetrain / Drive Shaft
Service LifeReplace as needed based on inspection
CompatibilityCAT specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

The initial symptom of a failing drive shaft bearing is often an increase in drivetrain vibration or a noticeable humming or whining noise that changes with vehicle speed. If ignored, the bearing will continue to wear, leading to increased play in the drive shaft, potential gear damage, and eventual loss of power transmission. Continued operation risks severe damage to the entire drivetrain.

Installation Tip

Before installation, meticulously clean the bearing bore and the drive shaft where the bearing will seat to prevent contamination. Never use a hammer or pry bar to install the bearing; always use a proper press or installer tool to apply force evenly to the bearing's outer race.

Service Note

Inspect the drive shaft for straightness and wear, check universal joints for play, and examine the transmission and differential seals for leaks when replacing this bearing.