Some common sense of slewing ring flange

Before the installation of slewing ring flange, the installation surface of the main machine shall be checked, the supporting parts shall have sufficient strength, the connecting surface shall be machined, and the surface shall be smooth without sundries and burrs. For those that cannot achieve the required flatness through machining, 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. The surface of slewing ring flange shall be smooth and clean without paint residue, welding beads, burrs and other superfluous substances. Should be deleted. When cleaning, be careful not to let the solvent penetrate into the rotary table bearing, and do not use the solvent that damages 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. The roughness of the mounting surface for installing slewing ring flange shall not be greater than ra=12.5, 6.3m, and the flatness error of the mounting surface shall be tested for circumferential error and radial error. The circumferential flatness tolerance value has a corresponding standard value range with the diameter of the rotary table bearing raceway (see 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). To avoid local overload of turntable bearing caused by uneven installation plane or deformation of slewing ring flange support, the circumferential flatness error can only fluctuate once within any 180 degree range, and the change is gentle. 2. support stiffness. Standard slewing ring flange and zero clearance slewing ring have different requirements for bearing stiffness.