CATBearing & Bushing

8D6629 Bearing — Cat 320C 320D

This is a high-performance bearing designed to handle significant radial and axial loads in heavy-duty hydraulic systems. It is manufactured to meet Caterpillar's stringent quality and material standards, providing enhanced durability and smoother operation compared to a worn or failed bearing. Operators may notice increased hydraulic system noise, reduced responsiveness, or overheating when this bearing begins to fail.

Bearing – Part No 8D6629 – 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
ApplicationHydraulic pump and motor components
Service LifeReplace based on inspection and operating conditions
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

Early failure can present as a whining or grinding noise from the hydraulic pump or motor, especially when the system is under load. If ignored, the noise will worsen, and hydraulic performance may degrade, leading to sluggish operation. Continued use risks internal damage to the hydraulic pump or motor, potentially causing a loss of hydraulic function.

Installation Tip

Ensure the hydraulic system is properly depressurized and drained before attempting installation to avoid injury and contamination. Do not mix old and new seals or O-rings; replace all associated sealing components.

Service Note

When replacing this bearing, it is critical to inspect the hydraulic fluid for contamination and replace the hydraulic filter.