CATEngine Parts

191-2693 Swing Gearbox — Cat

The 191-2693 swing gearbox is a precision-engineered component responsible for transmitting power to the swing mechanism of CAT excavators, enabling controlled rotation of the upper structure. It is built with high-strength gears and bearings to withstand continuous operational loads, unlike a worn gearbox that may exhibit grinding noises or jerky movements. Operators may observe slow or erratic swinging, excessive play in the upper structure, or audible grinding sounds if this gearbox fails.

Swing Gearbox – Part No 191-2693 – 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 Gearbox
MaterialForged steel and hardened gears
ApplicationExcavator swing circuit
Service LifeReplace based on inspection and oil analysis
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

Initial signs of a failing 191-2693 swing gearbox include noisy operation during swings, such as grinding or whining sounds. If left unaddressed, the swing function may become sluggish, jerky, or lose its ability to hold position. Continued use risks severe internal damage to the gears and bearings, potentially immobilizing the excavator's upper structure.

Installation Tip

Ensure the mounting surfaces on the machine and the gearbox are perfectly clean and free of old sealant or debris. Do not reuse old mounting hardware; always use new bolts and washers.

Service Note

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