CATEngine Parts

200-3373 Swing Motor — Cat 330D

This is a CAT Swing Motor, a vital component in excavators and other equipment that provides the rotational power for the upper structure (house) to swing. Built to meet stringent OEM performance and durability standards, this motor ensures smooth, precise, and powerful slewing actions, unlike a worn unit that may exhibit jerky movements. Operators may notice slow or erratic swinging, a complete loss of swing function, or unusual grinding noises if this motor fails.

Swing Motor – Part No 200-3373 – 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 Motor
MaterialSteel, cast iron, seals
ApplicationExcavator upper structure rotation
Service LifeReplace as needed based on performance
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

The initial symptom of a failing swing motor is often a reduction in the speed or smoothness of the swing function. If ignored, the swing may become jerky, lose power, or stop responding altogether, significantly impacting productivity. Continued operation can lead to damage to the swing gear and bearing due to uneven forces.

Installation Tip

Ensure the swing gear on the motor and the swing bearing teeth are thoroughly cleaned and lubricated before installation. Never attempt to force the motor onto the gear; proper alignment is crucial.

Service Note

Inspect the swing bearing for wear and play, and check the hydraulic system for contamination when replacing the swing motor.