CATBearing & Bushing

9D1511 120G — Cat 320C 320D

This is a precision-engineered bearing designed for the specific demands of excavator swing systems, providing smooth and stable rotational movement. It is manufactured to meet high-quality standards, offering reliable performance and durability comparable to original equipment. Operators may experience jerky swing movements, increased resistance, or audible grinding noises if this bearing is compromised.

120G – Part No 9D1511 – 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
MaterialHardened steel with specialized raceway treatment
ApplicationExcavator swing mechanism
Service LifeReplace based on operational wear and inspection
CompatibilityOEM specification
ConditionNew — CTP aftermarket replacement

Failure Symptoms

The first sign of failure is often a noticeable increase in noise or vibration during the swing function. If ignored, the bearing can develop excessive play, leading to imprecise bucket control and potential damage to the swing gear and motor. This can compromise operational efficiency and safety.

Installation Tip

Ensure the mounting surfaces on both the chassis and the upper structure are perfectly clean and free of any burrs or damage. Proper alignment is critical to prevent uneven loading on the bearing races.

Service Note

Inspect the swing motor, drive gear, and mounting bolts for wear or damage when replacing the swing bearing.