Terex Corp., Westport, Conn., has launched a new mid-range series of Comedil flat top tower cranes. The 11- to 13-ton CTT 231 is the first in the series, with other models to follow. It features a wide range of mechanical- and configuration-jib options. The largest possible jib measures 230 feet and the minimum jib option is 98 feet. Reaching free-standing heights of 205 feet, the crane is suitable for work on both low- and high-rise construction. According to product literature, the tower crane has a competitive load diagram that decreases significantly less compared to cranes with the same features.
Key assembly features include an under carriage composed of a cross-shaped structure with pin connections. A new base ballast weighing 6 tons features lifting points placed at an angle to make handling more practical. Likewise, two M72 bolts at each corner of the tower sections speed installation. The entire upper part of the crane can be assembled with just four operations, with only one lifting operation needed for overhead assembly of jib TT15 03/11.
Other features include a slewing unit equipped with two direct current motors, which guarantee slewing speed and precision of movements. The counter jib is equipped with winches up to 60 kW. The integrated control system in the crane features a touch screen and graphic interface. Among the new aspects of the control system are diagnostic signals, wind speed indicator and warning light, and a movement load positioning function. Load positioning, controlled through a push-button joystick, cuts load lifting and lowering speeds in half when the 1 and the 2 buttons are pushed.
For more information, go to www.terex.com.
Lift & Access is part of the Catalyst Communications Network publication family.
