CATBearing & Bushing

8D8168 Bearing — Cat 320C 320D

This is a high-precision bearing designed to support rotational components in excavator swing systems or undercarriage applications, minimizing friction and wear. Manufactured to meet CAT's rigorous quality and material standards, it provides enhanced durability and load capacity compared to a worn unit. Operators may notice increased swing resistance, unusual noises during rotation, or excessive play in the swing mechanism when this bearing is compromised.

Bearing – Part No 8D8168 – 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 TypeSwing Bearing
MaterialForged Steel Alloy
ApplicationExcavator Swing System
Service LifeReplace as needed based on inspection
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

Early failure symptoms may include stiff or jerky swing movements, or audible grinding noises during rotation. If ignored, the bearing can develop excessive play, leading to inaccurate positioning and potential damage to the swing gear and drive motor. Continued operation risks catastrophic failure of the swing mechanism, causing severe damage and operational standstill.

Installation Tip

Thoroughly clean the mounting surfaces on both the chassis and the bearing itself, ensuring no dirt or old grease is present. Ensure the bearing is seated perfectly square before tightening mounting bolts to prevent uneven stress.

Service Note

Inspect the swing gear teeth for wear or damage, and check the hydraulic swing motor for leaks or performance issues.