CATUndercarriage

7N5511 Gear Assem. (57 Teeth) — Cat 3306

This is a gear assembly with 57 teeth, a crucial component within the undercarriage drive system responsible for transmitting power to the tracks. Manufactured to exacting standards, it ensures precise engagement and smooth operation, unlike a worn gear that may show chipped teeth or excessive backlash. Operators might experience increased track noise, jerky movement, or a loss of drive power to one or both tracks when this gear fails.

Gear Assem. (57 Teeth) – Part No 7N5511 – CAT Spare Part
Part Specifications
BrandCAT
CategoryUndercarriage
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

Cross-reference part number with serial number before ordering to confirm fitment. Keep original parts until new ones are confirmed correct. Record part numbers replaced for future reference.

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

Part TypeGear Assembly
MaterialHardened Steel
ApplicationUndercarriage drive system
Service LifeReplace based on wear inspection, typically 5,000-8,000 hrs
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

Initial signs of wear may include a grinding noise when the machine is moving or turning. As wear progresses, the gear may slip under load, causing jerky track movement and a noticeable loss of pulling power. Continued operation with a damaged gear can lead to complete loss of drive to the affected track.

Installation Tip

Thoroughly clean the mating surfaces and ensure all old sealant or debris is removed before installation. Avoid using excessive force to seat the gear, as this can indicate misalignment or damage to the gear teeth.

Service Note

Inspect the drive sprocket and final drive bearings for wear and damage; replace if necessary to ensure proper meshing and prevent premature failure of the new gear.