Self-erecting crane is a bottom slewing crane that stands on outriggers, holding no counter jib but their counter- weight and ballast at the base of the mast. Once the self-erecting crane is pulled to a jobsite by a trailer, and then the fixed support is unfolded, it can be installed itself by a control button. While the T-type and luffing tower cranes have been mainly used in Korea because of their perfect match for construction of the high-rise buildings, the demand for IGO T85A and IGO T130, the flagship models of Potain self-erecting cranes, are expected to grow rapidly in the domestic market in the near future due to the diversification trend of the construction market in recent years. The self-erecting tower crane boasts its efficiency and simplicity since no foundation anchor is necessary and shorter time is required to install, dismantle, and transport. Thanks to all these features, the demand for self-erecting cranes is well expected to increase in the near future.