... . 4.CE and SGS approved Model LD Hook Overhead Crane Features of product as follows: Model LD electric ... Double -girder Overhead Crane is widely used in machine -processing , assembly workshop ... Technical Data Lifting capacity(t)1,2,3,5,10,16,20Span (m) 7.5-22.5Mechanism ... travelling Speed (m/min)10 ,20, 30 45, 60 Motor TypeZDY21-4ZDR12-4Power ...