1. Installation of the slewing bearing Before the slewing bearing is installed, the installation surface of the host should be checked first. It is required that the support should have sufficient strength, the connecting surface should be machined, and the surface should be smooth and free of debris and burrs. For those that cannot be machined to achieve the required flatness, special plastics with high injection strength can be used as fillers to ensure the accuracy of the installation plane and to reduce vibration. The ring of the slewing bearing has a quenched soft belt area, which is marked with 'S' on the end face of the ring. When installing, the position of the soft belt should be placed in the non-load area or infrequent load area (the plug hole is always located in the soft area. belt). When installing the slewing bearing, radial positioning should be performed first, the mounting bolts should be cross-tightened, and the rotation of the bearing should be checked. There should be sufficient pre-tightening force when tightening the bolt, and the pre-tightening force should be 70% of the yield limit of the bolt material. Mounting bolts should be equipped with quenched and tempered flat washers and spring washers are strictly prohibited. 2. Maintenance of the slewing bearing After the slewing bearing installed and put into operation, after 100 hours of continuous operation, it should be fully checked whether the pre-tightening torque of the mounting bolts meets the requirements, and the above inspection should be repeated every 500 hours of continuous operation. After the slewing bearing is installed, an appropriate amount of grease should be filled, and the bearing should be slewed while filling to make the grease evenly distributed. After working for a period of time, the slewing bearing will inevitably lose a part of the grease, so the slewing bearing in normal operation should be replenished with grease every 50 to 100 hours. 3. Transportation and storage of slewing bearing During transportation, the bearing should be placed horizontally on the vehicle, and there should be measures to prevent sliding and vibration, and auxiliary support should be added if necessary. Bearings should be placed horizontally on a dry, ventilated and flat site, and should be isolated from chemicals and other corrosive items during storage. If multiple sets of bearings are required to be stacked together, three or more wooden blocks with the same height should be evenly placed between each set along the circumferential direction, and the upper and lower blocks should be placed in the same position. Bearings that still need to be stored beyond the rust-proof period should be cleaned and rust-proofed again.