With the development of the offshore oil rig industry, there are increasing requirements for large-scale lifting equipment for platform installation and maintenance, mainly in:1. The requirements of basic function parameters are continuously improved. The lifting capacity of a single machine is basi

Since the bearing is so critical, careful maintenance is necessary. More than 96% of slewing ring bearing failures are due to surface-originated lubrication problems, contamination, overloading, and improper installation and mounting fits. These surface failures occur much earlier than classical fat