TYHI’s WK series excavators are used for open-pit mines. They have been developed through a combination of years of successful experience in the manufacturing of mining shovels and the adoption of advanced technology in design, processing, and manufacturing from home and abroad. They are suitable both for stripping and excavating open-pit coal mines, iron mines and ferro-metal mines.

Our WK series excavators feature such state-of-the-art technology as three-dimensional imitation and definite circle analysis. They perform well and can be used effectively according to users’ requirements in combination with various haul trucks and crush stations for higher loading and lower production costs.

Our excavators’ electric system uses a rectifier/regeneration common DC bus-bar and variable frequency speed adjustment system. The electric control, with PLC at its core, is a 3-stage system of up-position monitoring, field bus and frequency variable speed control. It causes not disturbance to the power grid, allowing a wider range of power voltage fluctuation and high power factor. The system is loaded with software to optimize the dig/cut curve and automatically optimize the hoist and dig power distribution. The system automatically troubleshoots, displays status, and calculates electric power. This system has the advantages of state-of-the-art technology, reliable operation, high transmission efficiency and low power consumption. Our WK-55 excavators are designed to be used in combination with mining trucks with a capacity of 220MT to 363MT.

Technical characteristics:

• Gear-rack crowding, powerful penetration, highly efficient;

• Gear transmission uses gears of high hardness surface for durability;

• Uses a planet reducer for the swing and propel mechanism;

• Propel has a high hand drive for added durability;

• Air release spring disk brakes.


Technical Spec. of WK-55

Normal bucket volume

55m³

Main motor

2x1000kW

Scope of bucket volume

36m³-76m³

Max. Excavating Radius

23.85m

Lifting speed

1.58m/s

Max. Excavating Height 

18.10m

Pushing speed

0.75m/s

Max. Dumping Radius

20.40m

Traveling speed

1.60km/h

Max. Dumping Height

10.06m

Max. Lifting force

2890kN

Excavating Depth

1.93m

Max. Pushing force 

1127kN

Working weight 

1460t/1480t

Max. Crawling angle

13°

Theoretical Productivity

6600m³/h



WK-55 at Zhunge’er



WK-55 at Pingshuo of China Coal

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