For QTZ63-5510 tower crane, main technical parameters are as follows: Item Parameters Metric lifting moment 63T. M Max. Lifting capacity 5.0/6.0T Rated lifting capacity in max. Working radius 1.0T Working radius 3.0-55M Independent 41M Attachment 141M Hoisting speed 80/40M/min Slewing speed 0.63R/min Trolley speed 43.4/21.7M/min Climbing speed 0.6M/min Counter-balance 12.5T Stationary structure 31T Total Power 31.7KW.