CATBearing & Bushing

4b8108 Bearing-Inner — Cat 117 118

This is an Inner Bearing, designed to provide crucial support and facilitate smooth rotation for shafts within various mechanical systems. Manufactured to meet high-quality standards, it ensures reliable performance and longevity, unlike a worn bearing which can cause increased friction and instability. Operators may notice increased vibration, noise, or binding in the affected component when this inner bearing begins to fail.

Bearing-Inner – Part No 4b8108 – 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 TypeInner Bearing
MaterialSteel alloy
ApplicationShaft support and rotation
Service LifeReplace as needed based on inspection
CompatibilityOEM specification
ConditionNew — CTP aftermarket replacement

Failure Symptoms

A failing inner bearing often begins with a subtle humming or grinding noise that increases with speed. If neglected, this noise will escalate, accompanied by noticeable vibration and potential binding of the shaft. Continued operation risks severe damage to the shaft and housing, leading to costly repairs and downtime.

Installation Tip

Thoroughly clean the shaft and the bearing bore before installation to remove any residual dirt or old grease. Ensure the bearing is pressed on straight and fully seated to prevent uneven loading.

Service Note

Inspect the outer bearing (if applicable) and the shaft seals for wear or damage when replacing the inner bearing.