Four Point Ball Slewing bearings comprise an inner ring and an outer ring, one of which usually incorporates a gear. Together with attachment holes in both rings, they enable an optimized power transmission with a simple and quick connection between adjacent machine components. The bearing raceways, in conjunction with the rolling elements and cages or spacers, are designed to accommodate loads acting singly or in combination, and in any direction.
In addition to the 4 point ball slewing bearing rating life, there are key factors you must consider when putting together the slewing bearing specifications for an application, including:
lubricant and supply method
shaft and housing fits
bearing clearance class
cage material and guidance
dimensional stability
precision requirements
slewing bearing sealing
mounting method and maintenance