CATBearing & Bushing

4D1644 Bearing — Cat 120 120b

This is a high-quality bearing designed to support rotational components and minimize friction within the drivetrain or undercarriage of Caterpillar equipment. Manufactured to meet precise OEM material and dimensional specifications, it ensures reliable performance and longevity over a worn or damaged bearing. Operators may observe increased noise, vibration, or a noticeable stiffness in the affected component when this bearing begins to fail.

Bearing – Part No 4D1644 – 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
ApplicationDrivetrain/Undercarriage
Service LifeReplace based on inspection or failure symptoms
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

The first signs of a failing bearing may include a humming or grinding noise during operation, or increased resistance when turning the affected component. If ignored, this can escalate to significant vibration, component seizure, and potential damage to associated shafts and housings. Continued operation risks accelerated wear and potential breakdown of the component.

Installation Tip

Ensure the bearing housing and shaft are thoroughly cleaned and free from any contaminants or burrs prior to installation. Avoid applying force unevenly or directly onto the bearing's rolling elements during fitting.

Service Note

Inspect the seals, shaft, and housing for any signs of wear or damage, and confirm proper lubrication levels.