CATBearing & Bushing

4W8093 Main Bearing — Cat 613C PR-1000

This is a critical main bearing designed to support the crankshaft within the engine, ensuring proper rotation and power transfer. Manufactured to meet high-quality standards, it offers superior wear resistance and load-bearing capacity compared to a worn or failed bearing. Operators may observe a drop in oil pressure, knocking sounds from the engine, or a general loss of engine power when this bearing is compromised.

Main Bearing – Part No 4W8093 – 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
MaterialSteel-backed aluminum alloy
ApplicationEngine crankshaft support
Service LifeReplace during engine overhaul or as indicated by oil pressure/noise
CompatibilityCAT 3208 engine, 613C, PR-1000, PS-500
ConditionNew — OEM specification aftermarket

Failure Symptoms

The first sign of main bearing failure is often a distinct knocking or rattling sound from the engine, accompanied by a drop in oil pressure. Continued operation will lead to increased noise and a significant reduction in engine performance. If left unaddressed, this can result in severe engine damage and costly repairs.

Installation Tip

Ensure crankshaft journals are meticulously cleaned and inspected for any scoring or out-of-roundness before installing new bearings. Never mix and match bearing shells; always use a complete matched set as specified.

Service Note

When replacing main bearings, it is crucial to inspect the connecting rod bearings and the crankshaft for any signs of wear or damage.