CATBearing & Bushing

3603986 Bearing — Cat 312D2 312D2 GC

This is a precision-engineered bearing designed to support rotational loads and minimize friction within the hydraulic or mechanical systems of excavators. Manufactured to meet stringent CAT material and dimensional specifications, it offers superior wear resistance and longevity compared to a compromised bearing. Operators may observe increased hydraulic system noise, reduced performance, or overheating if this bearing begins to fail.

Bearing – Part No 3603986 – 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 TypeBall Bearing
MaterialHardened Steel
ApplicationHydraulic pump/motor support
Service LifeReplace based on inspection or 2,000-4,000 hrs
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

Early indications of failure include whining or grinding noises emanating from the hydraulic system, particularly under load. If ignored, the bearing can seize, leading to catastrophic failure of the pump or motor it supports and potential hydraulic system contamination. This can result in significant operational downtime and extensive repair costs.

Installation Tip

Ensure the bearing bore and shaft are meticulously clean and free of any debris before installation. Avoid using a hammer to seat the bearing; use a proper press or driver tool.

Service Note

Inspect the hydraulic pump or motor shaft and housing for any signs of wear or damage that may have contributed to the bearing failure.