Unlock Efficiency: The RMB80 Crusher Bucket Redefines Highway Subgrade Crushing

Introduction

In the demanding world of highway construction, time, durability, and precision are non-negotiable. For a 5-year highway subgrade project in a region dominated by granite gneiss, limestone, and sandstone, the RMB80 crusher bucket has emerged as a game-changer. Paired with the Liugong CLG922E excavator, this combination delivers 300 tons of crushed stone daily over 12 months of operation—proving its reliability under extreme conditions.

The Challenge

Hard rock formations like granite gneiss (Mohs 6) and abrasive sandstone demand equipment that balances power with finesse. Traditional crushing methods often lead to frequent maintenance stops, delayed timelines, and inflated costs.

Engineered for Toughness

Built with ultra-high-strength steel and wear-resistant teeth, the RMB80 thrives in multi-rock environments. Its optimized geometry ensures efficient crushing with minimal energy waste—critical for sustained 10-hour shifts.

Perfect Synergy with Liugong CLG922E

The Liugong CLG922E’s 124 kW Cummins QSB7 engine and advanced hydraulic system provide the ideal power-to-precision ratio for the RMB80. This excavator’s 140 kN bucket digging force and 20,000 kg operating weight ensure stability, while the crusher bucket’s 80 RMB design maximizes material throughput.

Cost-Effective Productivity

With a daily output of 300 tons, the RMB80 reduces the need for secondary crushing units. 

Technical Highlights

Material Compatibility: Granite gneiss, limestone, sandstone.

Daily Capacity: 300 tons (10-hour shift).

Excavator Compatibility: Liugong CLG922E (22-ton class).