The ring of the turntable bearing has a quenched soft band area, which is marked with "S" on the end face of the ring. During installation, the position of the soft band should be placed in the non-load area or the non-constant load area (the plug hole is always located in the soft band).
when installing the turntable bearing, radial positioning should be carried out first, the mounting bolts should be tightened crosswise, and the rotation of the bearing should be checked. There should be enough pre-tightening force when tightening bolts, and the pre-tightening force should be 7% of the yield limit of bolt materials. Mounting bolts should be equipped with quenched and tempered flat washers, and spring washers are strictly prohibited.
The turntable bearing is a kind of large bearing with special structure, which can bear large comprehensive loads such as axial load, radial load and overturning moment at the same time, and has multiple functions such as support, rotation, transmission and fixation. In general, the turntable bearing itself has mounting holes, lubricating oil and sealing devices, which can meet the different needs of various hosts working under different working conditions; On the other hand, the turntable bearing itself has the characteristics of compact structure, convenient guiding rotation, simple installation and easy maintenance, and is widely used in large-scale rotary devices such as lifting and transportation machinery, mining machines, construction engineering machinery, port machinery, wind power generation, medical equipment, radar and missile launchers.