CATBearing & Bushing

7S9845 Main Bearing — Cat 3306

This is a high-quality main bearing designed to support the crankshaft in an engine, ensuring proper alignment and reduced friction. Manufactured to meet stringent OEM material and dimensional standards, it provides superior load-bearing capacity and durability over a worn component. Operators may detect engine knocking, loss of oil pressure, or rough running when this main bearing begins to fail.

Main Bearing – Part No 7S9845 – 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 TypeMain Bearing
MaterialSteel alloy with bearing material
ApplicationEngine crankshaft support
Service LifeReplace as part of engine overhaul or failure
CompatibilityOEM specification
ConditionNew — CTP aftermarket replacement

Failure Symptoms

Failure of the 7S9845 main bearing can manifest as a distinct knocking sound from the engine, especially under load, and a drop in oil pressure. If ignored, this can lead to severe crankshaft and engine block damage. Continued operation risks catastrophic engine failure.

Installation Tip

Ensure the crankshaft journals and bearing bores are perfectly clean and free from any debris or burrs before installation. Never reuse old bearing cap bolts; always use new ones torqued to specification.

Service Note

Always replace main bearings in sets and inspect the crankshaft for any signs of scoring or wear.