WK-4B Mine-use Excavator

A.	The first 4m³Excavator had been manufactured in 1961, now it is still running in Neimenggu Pingzhuang and playing its role
B.	4m³ Excavator early stage products: D-4 and WK-4 two series
C.	Dominant products of 4m³: WK-4A, WK-4B and WK-4C three types, on sale about 226 sets
D.

2. WK-4B Excavator

WK-4B Mine-use Excavator is the third generation of WK-4 modified machine type, meantime absorbed the WK-10B technical advantages, and is also one of the dominant product of the 4m³ excavator, had been manufactured for about 40 sets, extensive used in metallurgic, coal etc. middle and small opencast mines for excavating and stripping works, as well as Petroleum, Chemistry, Hydro-power, Construction etc. earth/stone engineering

Technical Spec. of WK-4B
Nominal bucket volume	5m³	Main motor	250kW
Bucket volume range	4-6m³	Max. Excavating radius	14.8m
Lifting speed	0.885m/s	Max. Excavating height	10.765m
Pushing speed	0.53m/s	Max. Dumping radius	13.06m
Traveling speed	0.43km/h	Max. Dumping height	6.75m
Max. Lifting force	450kN	Excavating depth	3.61m
Max. Pushing force	225kN	Working weight	208t
Max. Crawling angle	12º	Theoretical productivity	720m³/h
Average bearing pressure	245kPa


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