... and machining capability. 4 meter Hobbing Machine (slewing ring) Import excavator and truck cranes slewing ring list HITACHI:UH04-1 UH07-5 ... for many Engineering Machinery,for example,Slewing Conveyer,Welding Operation Machine,Pint-size&Medium-sized Crane,and so on2. Double ... time.By the way,it is widely suitable Hoisting&Transporting Machine,Construction Machinery as well as Martial Machinery. 4 meter ...