CATBearing & Bushing

4M9920 Bearing — Cat 1693 631C

This is a robust bearing designed to withstand heavy loads and ensure smooth rotational function in demanding environments. Manufactured to meet Caterpillar's exacting standards, it offers superior longevity and performance compared to a worn or failing bearing. Operators may observe increased noise, vibration, or a reduction in equipment responsiveness when this bearing begins to show signs of wear.

Bearing – Part No 4M9920 – 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 TypeBearing
MaterialHardened Steel
ApplicationHeavy Load Support
Service LifeReplace based on inspection and operating hours
CompatibilityCAT 4M9920
ConditionNew — OEM specification aftermarket

Failure Symptoms

Early signs of failure might include a low grinding sound during operation. If ignored, this can progress to significant vibration and heat generation, potentially damaging the shaft. Continued use risks operational failure and costly repairs to associated systems.

Installation Tip

Ensure the shaft and the bearing housing are perfectly clean and free of any debris before installation. Never apply heat to the bearing unless specifically required by the service manual, as this can compromise its integrity.

Service Note

Inspect the shaft for wear and ensure the bearing housing is clean and free from damage before fitting the new bearing.