This 30206 tapered roller wheel bearing is made of chrome steel and is open on both sides. It has a 30 mm inside diameter, a 62 mm outside diameter, and a 17.25 mm depth. The single-row bearing supports radial loads and axial loads in one direction. The races are made of chrome steel for durability and resistance to deformity under heavy loads. The bearing is open on both sides for lubricating in place. The static load rating is 41,500 newtons and the dynamic load rating is 44,800 newtons. The maximum speed with grease lubrication is 53,000 revolutions per minute (rpm). This tapered roller bearing is used in applications such as vehicles, construction equipment, and agricultural machinery, among others.

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.