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1. high efficiency, 2. Propel adopts high hand drive to prolong life time, 3. Air release spring disk brakes - details see: https://www.machineto.com/1480ton-mine-excavator-wk-55-10106727

WK series excavator is the large excavating equipment for open-pit mine developed by TZ. It combines the successful experience accumulated for years from manufacturing of mining shovels, at the meanwhile absorbs lots of advanced technology for design, processing, manufacturing and control from home and abroad. It is suitable both for stripping and excavating on open-pit coal mine, iron mine and ferro-metal mine.

WK series excavator has adopted state-of-art technology, like three-dimension imitation and definite circle analysis. It is of reasonable performance, working dimensions and exerts its efficiency to fully play to enhance the matching ability with all sorts of haul trucks and crush station to better satisfy the users’ requirements of higher loading and lowest producing cost.

Electric system adopts Rectifier/Regeneration to common 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. It is of futures of no disturbance to power grid allowing wider range of power voltage fluctuation and high power factor. The system is loaded with software to optimize the dig/cut curve and automatically optimization of hoist and dig power distribution. The system can realize self troubleshooting and running status display, electric power calculating and so on. This system has the advantages of state-of-art technology, reliable operation, high transmission efficiency and low power consumption.

WK-55 excavator is designed to match with mining trucks with capacity of 220MT to 363MT.

Technical characteristic:

• Gear-rack crowding, powerful penetration, high efficiency;

• Gear transmission uses gears of high hardness surface to have long life;

• For swing and propel mechanism adopt planet reducer;

• Propel adopts high hand drive to prolong life time;

• Air release spring disk brakes are applied.

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