Product Description

1. Fast-hitch connector of the slewing mast Install the counter-jib fast and conveniently. 2. Square shaped structure of steel tube Three forces from belly bar and main stand bar meet into one point, which can afford a large load of more advanced whole mechanics performance. 3. Slewing mechanism with frequency altering and speed regulated 4. Frequency conversion control panel 5. Trolley radius-changing mechanism with frequency altering and speed regulation 6. Hoisting weight limiter Overload limit switch.