CATBearing & Bushing

8D9909 Bearing As-Roller — Cat 120g 120H

This is a roller bearing assembly designed for heavy-duty applications, providing robust support for rotating shafts and components. It is manufactured to precise standards, ensuring longevity and performance equivalent to original equipment, unlike a worn bearing which would exhibit increased friction, noise, and potential for premature failure. Operators might observe a distinct clunking sound or a noticeable looseness in the component it supports.

Bearing As-Roller – Part No 8D9909 – 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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Parts Trading Company  ·  Mumbai, Est. 1956  ·  Same-day dispatch  ·  Ships worldwide  ·  GST invoice included

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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 TypeRoller Bearing Assembly
MaterialHigh-carbon steel
ApplicationUndercarriage or drive system
Service LifeReplace based on inspection or 3,500 hrs
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

Early signs of a failing roller bearing assembly include a metallic scraping sound or increased resistance during rotation. If left unaddressed, this can lead to severe vibration, heat buildup, and potential damage to the shaft and housing. The ultimate risk is the loss of mobility or operational capability of the equipment.

Installation Tip

Always verify that the bearing housing is perfectly clean and free from any debris before installing the new bearing. Never use a hammer to force the bearing into place; use a proper bearing installer tool.

Service Note

Inspect the drive shaft and seals for wear or damage when replacing this roller bearing assembly.