CATBearing & Bushing

8N9019 Bearing — Cat

This is a grooved main bearing designed for the intermediate position within an engine's crankshaft assembly. It is manufactured to meet stringent OEM specifications, ensuring superior durability and performance compared to a worn or damaged bearing which can lead to increased friction and oil clearance. Symptoms of a failing bearing include a distinct knocking or rattling sound from the engine, especially under load, and a drop in oil pressure.

Bearing – Part No 8N9019 – 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 TypeEngine Main Bearing
MaterialTri-metal alloy
ApplicationEngine crankshaft main journal
Service LifeReplace as part of engine overhaul or upon inspection
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

A noticeable increase in engine noise, often described as a deep knock or rattle, is the first sign of a failing main bearing. If left unaddressed, this noise will intensify, and oil pressure may begin to drop, indicating increased internal wear. Continued operation risks significant crankshaft and bearing journal damage.

Installation Tip

Ensure the crankshaft journals are meticulously cleaned and inspected for any imperfections before installation. Avoid using abrasive materials during cleaning, as this can damage the bearing surface.

Service Note

Inspect the crankshaft journals for wear and scoring, and check connecting rod bearings for proper clearance.