Slewing bearings are a type of rolling element bearing featuring an inner ring, outer ring, and a gear, with attachment holes throughout both rings. They are designed to enable an optimized power transmission and quick connection of machine components. They are suitable for single or combination loads in any direction, and usually support heavy loads at slow speeds. Other benefits include high rigidity, long operating life, low friction coefficient, corrosion resistance and surface protection. Slewing bearings are suitable for a multitude of applications such as cranes, windmills, heavy equipment, marine pods, offshore buoys, medical equipment, tidal turbines, mining, robotics, oil and gas, forestry vehicles, excavators, and aerospace industries. As with all bearings, they are available in a variety of designs, materials, sizes, seal types, and different features and improvements can always be added. Design options include four-point contact ball bearings, which are optimal for cost-effectiveness and load capacity. Eight-point contact ball bearings provide increased load capacity for extremely high load applications. Crossed cylindrical roller bearings
are typically highly rigid and resistant to rotation. Wire race bearings are extremely light compared to other same size bearings. Materials include different types of steel and bronze, depending on the manufacturer. Additional features include size and location of bolt hole patterns, internal versus external gear, lubrication
holes, preloading options, control devices, monitoring systems, and sealing cassettes. It can be difficult to choose the proper slewing bearing for specific applications; contact our experts at MRO Supply if you have questions about which slewing bearing you need. We offer a variety of slewing bearings of many sizes, manufacturers, styles, and materials.