1.Single speed,double speedd,strong structure 2.Using for gantry crane , ... 50hz 3phs(or according to your demand)9Main hook lifting speed (m/min)8/0.8m/min, 7/0.7m/ ... min, 3.5/0.35m/min10Trolley travelling speed (m/min)20/30m/min11I beam model16-63c12Min. rotate radius0 ... rope hoist:Spare parts for wirerope electric hoist: Double Speed Wire Rope Pulling Hoist For Gantry Crane,Overhead Crane