... jib frame, trolleying structure, slew on the top tower crane. It adopts the double wire winding Item Technical ... TorquekN.m800 Max.Lifting Weight(t)8 Working Range(m)2.5 ∼ 55/50 Rated Lifting Weight ... of Max Range(t)1.2 Lifting Speed(m/min)Ratioα =2 α =4 Lifting Weight(t ... m)attached type 156.5 independent type51.5 Balance Weight(m) (t) 55 14.8 50 13.8 Total Weight(t)43 Tower Crane ...