CATBearing & Bushing

7S9846 Main Bearing — Cat 3306

This is a main bearing designed to provide critical lubrication and support for the engine's crankshaft. It is manufactured to meet stringent OEM quality standards, offering superior wear resistance compared to a worn bearing that can lead to crankshaft damage. Symptoms of a failing main bearing include a persistent knocking sound from the engine, a drop in oil pressure, and potentially visible metal shavings in the engine oil.

Main Bearing – Part No 7S9846 – 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.

WhatsApp for Price & Availability☎ Call Mumbai Office

Parts Trading Company  ·  Mumbai, Est. 1956  ·  Same-day dispatch  ·  Ships worldwide  ·  GST invoice included

fore 3 PM IST.', };

Related CAT Parts

From the same category — may also be needed

2s5211
Bearing
7Y3552
Bearing
1568263
Body As-Piston
2964297
Universal Joint Gp
4F0559
Bearing
4i7345
Bearing

Browse all CAT Bearing Bushing →

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
MaterialSteel-backed babbitt or aluminum alloy
ApplicationEngine crankshaft main journals
Service LifeReplace as needed based on inspection or engine overhaul
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

A persistent, deep knocking sound that increases with engine RPM is the first sign of main bearing failure. If ignored, this can lead to increased engine vibration, a significant drop in oil pressure, and potential crankshaft damage. Continued operation risks severe internal engine damage and costly repairs.

Installation Tip

Ensure the crankshaft journals are meticulously cleaned and inspected for any scoring or wear before installing new bearings. Avoid rotating the crankshaft until all bearings are properly seated and lubricated to prevent initial damage.

Service Note

Inspect crankshaft journals for wear and scoring, and check connecting rod bearings for signs of damage when replacing main bearings.