CATBearing & Bushing

4T8086 Bearing — Cat D8L D8N

This is a heavy-duty bearing designed to support significant radial and axial loads within the powertrain or undercarriage of large Caterpillar tractors. Manufactured to meet precise OEM specifications for material hardness and dimensional tolerances, it provides reliable performance and longevity compared to a worn bearing showing signs of pitting or scoring. Operators may experience increased vibration, noise, or difficulty in steering and power transmission when this bearing begins to fail.

Bearing – Part No 4T8086 – CAT Spare Part
Part Specifications
BrandCAT
CategoryBearing & Bushing
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

Never strike bearings directly — use a bearing press or driver set. Heat housing (not bearing) to ease installation. Replace bearings in sets where applicable. Check housing bore diameter before fitting — out-of-round bores destroy new bearings.

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

Part TypeBearing
MaterialHardened Steel Alloy
ApplicationPowertrain or Undercarriage
Service LifeReplace based on inspection or 4,000-6,000 hours
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

Initial failure may be indicated by a humming or grinding noise during operation, or increased heat in the affected component. If the bearing continues to degrade, it can lead to component seizure, causing loss of drive or steering control and potentially damaging surrounding drivetrain parts. This can result in significant operational disruption and repair costs.

Installation Tip

Ensure the bearing bore and shaft are meticulously cleaned and free of any contaminants before installation. Avoid using heat guns or open flames to expand the bearing, as this can compromise its metallurgical integrity.

Service Note

Inspect the final drive or transmission components, including gears, shafts, and seals, for any signs of wear or damage.