CATBearing & Bushing

8M6218 Guard-Idler — Cat 955K 955L

This is an Idler Guard, designed to protect the idler assembly from debris and damage in harsh operating environments. It is constructed from durable materials to meet OEM specifications, offering robust protection that surpasses a worn or bent guard. Operators may notice increased wear on the idler components, or hear unusual noises from the undercarriage if this guard is damaged or missing.

Guard-Idler – Part No 8M6218 – 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 TypeIdler Guard
MaterialHeavy-duty steel
ApplicationUndercarriage protection
Service LifeReplace as needed based on inspection
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

The initial symptom of a damaged or missing idler guard is often increased noise from the undercarriage, particularly when operating in muddy or rocky conditions. If ignored, debris can accumulate and cause accelerated wear on the idler and track components. This can lead to premature failure of the idler assembly and potential track derailment.

Installation Tip

Ensure the mounting surfaces on the machine frame are clean and free of rust or damage before attaching the new guard. Do not force the guard into position; it should align easily with the mounting holes.

Service Note

Inspect the idler wheel, track chain, and rollers for wear or damage when replacing the idler guard.