CATEngine Parts

2276081 Gear Gr - Swing Bearing — Cat 320C 320D

This is a swing bearing gear, a critical component in the slewing system of excavators. It provides the interface for the upper structure to rotate smoothly and precisely on the undercarriage. This gear is manufactured to meet stringent material and dimensional tolerances, ensuring durability and optimal meshing with the swing pinion, unlike a worn gear which exhibits chipped teeth or excessive backlash.

Gear Gr - Swing Bearing – Part No 2276081 – CAT Spare Part
Part Specifications
BrandCAT
CategoryEngine Parts
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

Inspect mating surfaces for wear before fitting. Use torque specs from service manual. Replace gaskets and seals as a set — reusing compressed gaskets causes oil leaks. Clean all oil passages with compressed air.

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 Gear
MaterialHardened Steel
ApplicationSlewing System
Service LifeReplace as needed based on wear inspection
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

A worn swing bearing gear may first manifest as a grinding noise during slewing operations. If left unaddressed, the noise will increase in intensity, and the rotation may become jerky and lose precision. Continued operation with a damaged gear can lead to increased stress on the entire slewing mechanism, potentially causing more extensive damage.

Installation Tip

Ensure the mating surfaces of the swing bearing and the gear are thoroughly cleaned and free of debris before installation. Avoid overtightening mounting bolts, as this can distort the gear or damage the bearing.

Service Note

Inspect the swing pinion and the swing bearing raceways for wear and damage when replacing the swing bearing gear.