TC7052 tower crane Technical Parameter Jib length 70 m Mast Section 2.5*2.5*3 m Max.load 25 t Max. rated torque 4000 KN.m Tip load 5.2 t Hoisting height Stationary 51 m Achor 200 m Hoisting speed a=2 a=4 80/40 m/min Trolleying speed 0-100 m/min Slewing speed 0.62 r/min Climbing speed 0.46 m/min Upper chord of lifting beam <125 buckled square iron Motors Variable frequency motor Materials of mast <140*14 fastener/manganese steel Parallel width of lifting beam 1500 mm