CATUndercarriage

266-8794 Carrier Roller — Cat 303 303C

Name: 266-8794 Carrier Roller — Cat 303 303C
Brand: CAT
SKU: 266-8794
Availability: InStock

This carrier roller is a critical component of the undercarriage system, designed to support the track and maintain proper tension. It is manufactured to meet stringent OEM quality standards, ensuring superior durability and performance compared to worn or damaged rollers. Symptoms of a failing carrier roller include excessive track noise, uneven track wear, and potential track derailment.

Carrier Roller – Part No 266-8794 – CAT Spare Part

Part Specifications

Brand	CAT
Category	Undercarriage
Condition	Aftermarket — OEM Specification
Dispatch	Same-day from Mumbai (before 3 PM IST)
GST Invoice	Available — all orders
Export Docs	Commercial invoice, packing list, COO

Compatible Models

CAT Excavator 303 5C 303 5D 303 5E 303C 303E 304D Cr 304E

Always verify with serial number before ordering.

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Parts Trading Company · Mumbai, Est. 1956 · Same-day dispatch · Ships worldwide · GST invoice included

Installation & Application Notes

Cross-reference part number with serial number before ordering to confirm fitment. Keep original parts until new ones are confirmed correct. Record part numbers replaced for future reference.

Always consult the OEM service manual for model-specific torque values and procedures. WhatsApp our technical team if you need fitment guidance.

Failure Symptoms

A worn carrier roller will initially produce a noticeable clanking or grinding noise from the undercarriage, especially when the machine is moving. If left unaddressed, this can lead to accelerated wear on the track links and other undercarriage components. Continued operation with a damaged roller risks track derailment, causing significant downtime and potential damage to the hydraulic system.

Installation Tip

Ensure the track frame is clean and free of debris before installation to prevent premature wear. Avoid overtightening the mounting bolts, as this can damage the roller's seals and bearings.

Service Note

Inspect track shoes, guide shells, and tensioning system components for wear and proper function when replacing carrier rollers.

Part Type	Carrier Roller
Material	Forged Steel
Application	Undercarriage Track System
Service Life	Inspect every 500 hrs, replace as needed
Compatibility	OEM specification
Condition	New — OEM specification aftermarket

266-8794 Carrier Roller — Cat 303 303C

Compatible Models

Related CAT Parts

Installation & Application Notes

Failure Symptoms