Crane use and maintenance: lifting equipment maintenance and maintenance by hand. After the device delivered 55 tons crane price, daily maintenance by device drivers or operating unit is responsible for full-time staff, installation maintenance units for routine maintenance obligation to supervise and inspect the contents of bears. The main content of routine maintenance department summarized as "cross Job Law": clean, tighten, lubrication and adjustments, corrosion. Crane structure: crane operating agencies generally only four driving and driven wheels 55 t crane Which is good, if 55 tons crane, used to increase the weight of the wheel from a great way to reduce the wheel pressure Tadano. When the wheels than four, must be balanced hinged frame means that the crane load is evenly distributed on each wheel.