6I6404U

The 6I6404U is a Caterpillar-compatible J400 series mounting adapter manufactured by AzuLong Wear Parts. This adapter provides the critical connection between the bucket lip and replaceable tooth points on mid-large excavators for demanding commercial projects.

Adapter Profile — Application & Performance

Precision-engineered mounting adapter that provides a secure mechanical connection between the bucket lip and replaceable tooth points. Machined to tight tolerances for reliable fit and quick tooth changes in the field. The adapter absorbs the transition forces between the rigid bucket structure and the replaceable wear point.

Material & Durability

At 13.78 kg, this adapter is built for 25-35 ton class equipment. Manufactured from heat-treated alloy steel with HRC 48-52 hardness, this mid-range tooth is calibrated to match OEM weight and dimensional specifications. The controlled heat treatment achieves consistent hardness distribution from the tip — where abrasion resistance is critical — through to the base, where toughness prevents cracking under impact. Each tooth is inspected for dimensional accuracy before shipping.

Equipment Compatibility

Compatible with: CAT 330, CAT 336, CAT 340. 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.

• CAT 330
• CAT 336
• CAT 340