🔧 Product Overview

The Track Roller (Part No. 81E700631) is an undercarriage component used in Hyundai 210 excavators. It is also commonly known as a lower roller / bottom roller assembly.

⚙️ Main Function

• Supports the total weight of the excavator
• Ensures smooth movement of the track chain
• Maintains track alignment and stability
• Reduces friction between track links and frame
• Absorbs shock & vibration during operation

🏗️ Construction & Design

• Made from high-strength forged steel for durability
• Hardened surface (HRC approx. 50–58) for wear resistance
• Equipped with sealed & lubricated bearings
• Generally double flange design for better track guidance
• Heavy-duty structure suitable for excavation, mining & construction work

📍 Application

• Machine: Hyundai 210 Excavator (R210 series)
• Category: Undercarriage Parts
• Installed at the bottom of track frame