The WYD390/WY390 hydraulic excavator is a large-scale open-pit mining equipment developed by our company. It is driven by electric motors or diesel engines. This equipment is highly flexible and requires relatively low investment, making it suitable for open-pit mines that frequently transition.
It is primarily used for the stripping and mining operations in large-scale open-pit mines and serves as upstream supporting equipment for mining dump trucks or self-moving crushing stations.
Independent closed rotary circuit: Simplifies the circuit by eliminating the need for the main pump to be shared with the working device through valve control. Rotary braking energy can be fed back to the transfer case and other pumps.
Adoption of electro-hydraulic proportional control technology: Enhances the work efficiency of the entire machine and reduces driver fatigue.
Implementation of limit power control: Enables each pump to fully utilize the motor's power, thus reducing energy loss.
Energy regeneration in the bucket rod and boom: Utilizes the weight of the bucket rod and boom to save energy by not requiring the main pump to provide power when lowering the boom and bucket rod.
Parameter name
Parameter
parameter name
Working weight
389t
Maximum digging radius
15.2m
Standard bucket capacity
22m3
maximum digging height
16.6m
engine/motor rated output power
1450kW/1492kW
maximum unloading height
12m
Standard track shoe
1200mm
maximum push pressure
1640kN
grounding specific pressure
250kPa
maximum digging force
1300kN
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