This Lazy Susan turntable bearing is made of aluminum, has a load capacity of 850 pounds, and an outside diameter of 800 mm. This single row ball bearing is suitable for applications that support radial loads. This bearing is made of aluminum for light weight. This bearing requires no lubrication. This bearing ring has a load capacity of 800 pounds. This Lazy Susan bearing is suitable for rotating objects, such as book racks, business machine stands, and serving trays.Rolling bearings use rolling elements to maintain the separation between moving parts to reduce rotational friction and support radial and axial loads. These elements can be one of the following types: ball, cylindrical, spherical, barrel, needle, spindle, or tapered. All rolling bearings are open, shielded, or sealed. Sealed bearings are lubricated with oil or grease in the bearing factory, while open and shielded bearings are meant to be lubricated in place, with periodic reapplication of lubrication, based on use. The shield protects the working parts of the bearing from environmental debris that may be introduced and could reduce the ball bearing speed and lifespan. Rolling bearings are used in a range of applications from agricultural machinery to conveying equipment, robotics, dental equipment, elevators, rolling mills, ship rudder shafts, and aggregate crushers, among others.