Four-Point Contact Ball Bearings are efficiently designed single-row angular contact bearings
, comprised of a solid outer ring, one row of balls, and a split inner ring
. These bearings are designed to withstand a high load carrying capacity, and can handle axial loads in both directions as well as a combination of axial and radial loads, making them most effective for loads with high oscillatory movement. They take up considerably less space than double row bearings, and the split inner raceway allows for easy mounting and dismounting. The single row of balls allows for increased accuracy, resulting in reduced issues with wobble and bearing friction. Additionally, four-point contact ball bearings usually eliminate the need for second bearing, which is not only space and cost-effective, but also allows for integration of other features into the bearing for improved performance. It also eliminates multi-bearing issues such as runout matching and diameter matching. These bearings are primarily used for applications of slow to moderate speeds, however this can vary depending on ball size, bore size, and type of retainer, loading, and lubrication
. They require a regular amount of maintenance for an antifriction bearing, in most cases less. Lubrication must be replaced and replenished as with any bearing.