Excavator Bucket: Skeleton Digging Bucket Extreme duty WBM 300 Wedge Coupler, 30 ton – 40 ton Excavator

The Skeleton Digging Bucket – Extreme Duty is engineered for heavy-duty sifting, trenching, and material separation on large-scale excavation and pipeline projects. Built for 30–40 ton class excavators with WBM 300 wedge coupler, this attachment combines aggressive penetration with high-strength durability.

Key Specifications

• Length: 66"
• Weight: 4200 lbs
• Construction: T1 and AR400 steel
• Teeth: Replaceable pin-on design
• Rib spacing: 4.5" x 6"
• Coupler type: WBM 300 wedge lugging, Caterpillar 336 (90/100 mm pins)

Applications

Ideal for digging through rocky soil, separating roots and debris, and trenching in mixed ground conditions where material needs to be screened during excavation. The open-frame design reduces retained load while maximizing breakout force.

Durability

Built with reinforced T1 structural steel and AR400 wear zones on ribs and cutting edges to withstand extreme impact and abrasion. Replaceable teeth and robust rib construction ensure long service life in the most demanding environments.

Compatibility

• WBM 300 wedge coupler
• Caterpillar 336 (90/100 mm pins)