WZ-4 Dredger

WZ-4 Dredger is a grab type excavator, mainly used on port channel etc. dredging operation, nominal grab volume 4m³, had manufactured 2 sets totally, used in Macao and Ningbo separately, user had good reaction.
WZ-4 Dredger is fitted with 40t lifting hook.

2. Photo And Parameter

Technical Spec. of WZ-4 Dredger
Normal grab volume	4m³	Max. instantaneous lifting force dredging	338kN
Boom length	18m	Max. lifting speed of grab	60m/min
Normal boom angle	50°	Max. lowering speed of grab	80m/min
Lifting height of grab (50 degree)	8m	Allowed lifting capacity (70 degree)	40t
Working radius of grab(50 degree)	14.3m	Luffing speed	4-7m/min
Max. digging depth underwater	30m	Diesel engine power	720HP
Rated lifting force dredging	225kN	Rated speed of engine	1500r/min


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