CATTransmission Parts

099-0229 Swing Gearbox — Cat Excavator E110B E120B

This swing gearbox is a critical component of the excavator's upper structure rotation system, enabling precise slewing movements. It is manufactured to meet stringent OEM quality standards, ensuring superior durability and performance compared to worn or damaged units. Operators may notice a loss of smooth rotation, increased noise, or complete inability to slew the upper structure when this gearbox fails.

Swing Gearbox – Part No 099-0229 – CAT Spare Part
Part Specifications
BrandCAT
CategoryTransmission 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

Drain and replace transmission fluid when servicing internal components. Use correct ATF specification. Pre-fill torque converters with fluid before installation. Allow 10 minutes for fluid to settle before checking level.

Always consult the OEM service manual for model-specific torque values and procedures. WhatsApp our technical team if you need fitment guidance.

Part TypeSwing Gearbox Assembly
MaterialHardened Steel Gears, Cast Iron Housing
ApplicationExcavator Upper Structure Rotation
Service LifeReplace based on inspection and wear indicators
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

Initial signs of failure may include jerky or hesitant slewing movements and unusual grinding noises during rotation. If left unaddressed, the gearbox can seize, preventing any upper structure movement, which halts all operational capabilities.

Installation Tip

Ensure the swing bearing raceways are clean and properly lubricated before mounting the new gearbox. Avoid overtightening the mounting bolts, as this can distort the housing and damage the gears.

Service Note

Inspect the swing bearing and hydraulic slew motor for wear or leaks when replacing the swing gearbox.