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WK excavators are large-scale excavators used in open-pit mining. These excavators were developed based upon experience accumulated from years of manufacturing mining shovels. They utilize the most advanced technology in design, processing, manufacturing and control from home and abroad. Furthermore, they are suitable both for stripping and excavating open-pit coal mines, iron mines and ferro-metal mines.
Our WK excavators boast state-of-art technology such as three-dimension imitation and definite circle analysis. They feature excellent performance and working dimensions and can be used in combination with various types of haul trucks and crush stations in order to better satisfy users’ requirements for higher loading and low production costs.
The excavators’ electric system features rectifier/regeneration to communal DC Bus-bar and variable frequency speed adjustment. The electric control, taking PLC as the core, is a 3-stage system of up-position monitoring, field bus and frequency variable speed control. They cause no disturbance to the power grid allowing a wider range of power voltage fluctuation and high power factor. Their systems are loaded with software which optimizes dig/cut curves and automatically optimizes hoist and dig power distribution. This system automatically troubleshoots, displays running status, and calculates electric power. Using state-of-the-art technology, this system is highly reliable, highly effective, and energy efficient.
Our WK -20A excavator is designed to be used in combination with mining trucks with a capacity of 154 MT to 220 MT.
• Gear-rack crowding, powerful penetration, high efficiency;
• Gear transmission uses gears with a high hardness surface for durability;
• Adopts planet reducer for swing and propel mechanism;
• High hand drive is adopted for durability;
• Air release spring disk brakes.
Technical Spec. of WK-20A
Normal bucket volume
Scope of bucket volume
Max. Excavating Radius
Max. Excavating Height
Max. Dumping Radius
Max. Dumping Height
Max. Lifting force
Max. Pushing force
Max. Crawling angle
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