... speed reducer, integrated sealed switching controller, dynamic hydraulic/ electromagnetism brake, and three phase asynchronism crane motor. Steel ... capacity 16mm x 180m ropes Braking: Electric dynamic hydraulic brake, can stop the drum when power loose, also ... by customer required, for example groove drum, double brake and so on..ModelJM2JM3JM5JM8JM10Line pull capacity (kg)200030005000800010000average ...