CATEngine Parts

099-1102 Swing Drive Shaft — Cat 3116 EL200B

This is a swing drive shaft, a crucial component in the upper structure's rotation system of excavators, transmitting power from the swing motor to the slew ring. It is manufactured to meet stringent OEM quality standards, ensuring precise engagement and durability under high torque loads. Operators may experience a loss of or erratic swing function, unusual grinding noises during rotation, or excessive play in the upper structure when this shaft begins to fail.

Swing Drive Shaft – Part No 099-1102 – 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 Drive Shaft
MaterialHardened Steel Alloy
ApplicationExcavator Swing System
Service LifeReplace based on inspection for wear or damage
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

A failing swing drive shaft may initially present as a slight grinding noise or hesitation during the swing function. If ignored, this can progress to intermittent loss of swing power or complete inability to rotate the upper structure. The ultimate risk is damage to the slew ring and swing motor, leading to costly repairs and extended downtime.

Installation Tip

Ensure the mating surfaces of the shaft and the swing motor/slew ring are perfectly clean and free of old sealant or debris. Do not apply excessive lubrication to the splines, as this can lead to slippage under load.

Service Note

Inspect the slew ring gear teeth and the swing motor for wear or damage when replacing the swing drive shaft.