66NB-31310

The 66NB-31310 is an aftermarket replacement standard tooth compatible with Hyundai R450/R500 excavators — an aftermarket replacement tooth for Hyundai R450/R500 heavy excavators. Manufactured by AzuLong Wear Parts to match OEM specifications for direct bolt-on replacement.

Standard Profile — Application & Performance

The standard profile provides optimal balance between penetration and wear resistance. It is the most versatile tooth design for everyday excavation work, handling mixed soil conditions including topsoil, clay, and loose gravel. The profile geometry is optimized for self-sharpening wear — as the tooth wears down, it maintains a relatively sharp digging edge rather than going blunt.

Material & Durability

At 19.6 kg, this tooth is built for 45-50 ton class equipment. This heavy-duty tooth is forged from heat-treated alloy steel and finished to HRC 48-58, with the higher hardness range available for demanding rock and mining applications. The increased cross-section provides greater resistance to the bending loads that occur during heavy ripping and prying operations. The heat treatment process is tightly controlled to prevent internal stresses that could cause premature failure under shock loading.

Equipment Compatibility

Compatible with: Hyundai R450LC-7, Hyundai R500LC-7. Always verify tooth-to-adapter fitment for your specific machine configuration before ordering. AzuLong's technical team can assist with compatibility confirmation — contact rocky@azulong.com or WhatsApp +86-13777046128.

• Hyundai R450LC-7
• Hyundai R500LC-7