QD Overhead Crane

Model QD Electric Wench Double-Gverhead crane is a crane of widely used. The lifting capacity range is 5-50tons.The span range is from 10.5meters to 31.5meters and the ambient temperature is from-25? to +40?.Its duty range for A5 or A6.The cross travelling is driven by one motor.The long travelling are driven by motors separately. The cross traveling and long traveling are in double speeds and steplees cntrolled by frequency control.