CATBearing & Bushing

4n1186 Bearing — Cat 990

This is a robust bearing designed for heavy-duty applications, typically supporting large rotating components like wheels, axles, or drive shafts in large earthmoving equipment. Manufactured to precise tolerances using high-grade steel, it offers exceptional load-bearing capacity and wear resistance, outperforming a compromised bearing. Operators may experience increased friction, difficulty in steering or movement, or unusual noises from the affected component if this bearing is failing.

Bearing – Part No 4n1186 – 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 TypeHeavy Duty Wheel Bearing
MaterialCase-hardened alloy steel
ApplicationWheel hub, axle, or final drive assembly
Service LifeReplace based on inspection or component overhaul
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

A failing 4N1186 bearing might initially manifest as increased resistance to rotation or a noticeable hum that grows louder with speed. If ignored, this can lead to significant vibration, component overheating, and potential binding of the wheel or drive axle. The risk is severe damage to the axle or hub assembly, leading to extended downtime.

Installation Tip

Thoroughly clean the bearing bore and the shaft to ensure a precise fit and prevent contamination. Avoid using a hammer or excessive force during installation; use an appropriate press or driver to seat the bearing evenly.

Service Note

Always replace the bearing seals and inspect the axle shaft and hub for any signs of wear or damage.