CATBearing & Bushing

KeYchain5 Bearing — Cat 320C 320D

This is a robust bearing designed to ensure smooth rotational movement and support loads in excavator applications. Manufactured to meet Caterpillar's stringent quality requirements, it provides reliable performance and extended service life compared to worn or damaged units. Operators may notice increased noise, vibration, or a loss of hydraulic power as symptoms of a failing bearing.

Bearing – Part No KeYchain5 – 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
MaterialSteel alloy
ApplicationExcavator swing system or undercarriage
Service LifeReplace based on inspection and operating conditions
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

A failing KeYchain5 bearing might first manifest as a groaning or grinding sound during swing or travel operations. If not addressed, this can lead to increased resistance, jerky movements, or even seizure of the component, potentially damaging the swing gear or travel motor. The risk of operational downtime and costly repairs increases with continued use.

Installation Tip

Ensure the mounting surface and the bearing itself are completely free of any contaminants before installation. Never use a hammer to force the bearing into place; use a proper press or driver.

Service Note

Inspect the mating gear or shaft for wear and proper lubrication when replacing this bearing.