SwingSupportBefore installation should check the host installation surface,SupportThe parts should have sufficient strength, the connection surface should be processed, and the surface should be smooth without debris and burrs. For those who cannot achieve the required flatness through mechanical processing, special plastics with high injection strength can be used as fillers to ensure the accuracy of the installation plane and reduce vibration.

1. Installation plane.SwingSupportThe surface shall be smooth and clean, free of paint residue, welding beads, burrs and other superfluous substances. should be deleted. When cleaning, be careful not to let the solvent penetrate into the slewing bearing and do not use solvents that damage the sealing material. Before assembly, the mounting surface should be dry and free of lubricant. Measures should be taken to protect workers and the environment.

Install SwingSupportThe roughness of the mounting surface should not be greaterRa = 12.5,6.3m, the flatness error of the mounting surface should detect the circumferential error and the radial error. There is a corresponding standard value range between the circumferential flatness tolerance value and the raceway diameter of the turntable bearing (see the relevant standards for details, the radial error is subject to the actual width of the flange, and the radial plane tolerance value is half of the circumferential tolerance value). In order to avoid problems caused by uneven installation plane orSupportThe deformation causes local overload of the turntable bearing, and the circumferential flatness error is arbitrary.It can only fluctuate once within the range of 180 degrees, and the change is gentle.

　　2.Supportstiffness. Standardslewing bearingand zero-clearance slewing bearings have different requirements for bearing stiffness.

3. Positioning. The inner raceway and outer raceway of the slewing bearing have soft belts, which should be placed on both sides of the main bearing plane. That is, 90 degrees offset from the main loading area. There is a blockage or "S" mark at the soft belt. In addition, feeler gauges are usually used to check the consistency of the slewing bearing and the mounting surface. If the overlap is not good, fill it with suitable material. After the turntable bearing is installed, it is strictly prohibited to weld on the bracket.

4. Adjust the gear backlash. When installing a toothed slewing bearing, it is very important to adjust the gear backlash correctly. It can be measured and adjusted with a feeler gauge at the highest point of the gear radial runout, or with a lead wire or other suitable methods. If the backlash is not within the specified value, the pinion can be moved to change the center distance. After adjustment, turn the slewing bearing at least one full turn to ensure that there are no other tooth skipping points. After the slewing bearing is fixed, check the false clearance of the backlash again. The high point of the gear radial runout is marked in the tooth groove with green paint.

Only slewingSupportThe structure design is reasonable, the slewing bearing can have a good life. Slewing bearings are forged, heat treated, turned, ground and assembled. The rationality, advancement and stability of each processing technology will also affect the service life of the slewing bearing. The material will also affect the slewing bearing, but the material of the slewing bearing has been greatly improved, and the influence on the slewing bearing is slowly decreasing. The bearing capacity of the slewing bearing will also affect its service life. Due to the different manufacturing process and materials, the slewing bearing has different bearing capacity. If it exceeds this range during operation, it will cause damage to the slewing bearing, thus affecting the service life of the machine.