CATBearing & Bushing

1W0312 Main Bearing — Cat 215 916

This is a critical main bearing designed to support the rotating crankshaft within an engine, ensuring proper alignment and minimizing friction. Manufactured to precise OEM specifications, it offers superior wear resistance and load-handling capabilities compared to a worn or damaged original bearing. Operators may experience a noticeable drop in oil pressure, increased engine noise, or rough running when this component begins to fail.

Main Bearing – Part No 1W0312 – 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-backed aluminum alloy
ApplicationEngine crankshaft support
Service LifeReplace during engine overhaul or as needed
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

The initial symptom of main bearing failure is often a persistent knocking or rumbling noise from the engine, particularly under load. If ignored, this can lead to a significant drop in oil pressure and increased engine wear, potentially causing crankshaft damage. Continued operation risks severe engine damage and costly repairs.

Installation Tip

Ensure the crankshaft journals and the bearing saddles in the engine block are perfectly clean and free of any debris or old gasket material. Always use new crankshaft bolts and torque them to the manufacturer's specifications in the correct sequence.

Service Note

Inspect the crankshaft journals for wear, scoring, or out-of-roundness, and check the connecting rod bearings for wear.