Application Used on port, stock dump, garbage station, building site and workshop etc for grabbing stones, metal scrap, industrial waste, construction waste and living garbage. Feature Hydraulic turning points according to the customer’s demand, excavator grab without hydraulic rotary use the oil cylinder or standby pipeline, no need to add other hydraulic valve block and pipeline. Rotary hydraulic excavator grab need to add another set of hydraulic valve and pipeline to control, oil cylinder- is equipped with the piston protective- device, HARDOX plate is adopted for the key parts.