What are the key points for installing a turntable bearing?
Before installing a turntable bearing, the mounting surface of the main engine must be checked first. The support should have sufficient strength, the connection surface should be machined, and the surface should be flat 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 mounting plane and to reduce vibration.
The ring of the turntable bearing has a quenched soft belt area, which is marked "S" on the end face of the ring. When installing, the soft belt should be placed in the non-load area or non-frequent load area (the plug hole is always located at the soft belt).
When installing a turntable bearing, radial positioning should be performed first, the mounting bolts should be tightened crosswise, and the rotation of the bearing should be checked. There should be sufficient preload when tightening the bolts, and the preload should be 70% of the yield limit of the bolt material. The mounting bolts should be equipped with tempered flat washers and spring washers are strictly prohibited.
The slewing bearing is a large bearing with a special structure that can bear large axial load, radial load, overturning moment and other comprehensive loads at the same time, and integrates multiple functions such as support, rotation, transmission, and fixation. Generally, the slewing bearing itself is equipped with mounting holes, lubricating oil and sealing devices, which can meet the different needs of various main machines working under various working conditions; on the other hand, the slewing bearing itself has the characteristics of compact structure, convenient guiding rotation, simple installation and easy maintenance, and is widely used in large rotating devices such as lifting and transportation machinery, mining machinery, construction machinery, port machinery, wind power generation, medical equipment, radar and missile launchers.
