Double row angular contact ball bearings are a type of rolling-element bearing that consists of two rows of balls arranged at an angle to the axis of the bearing. This arrangement enables the bearing to support both radial and axial loads in both directions.
The angle of contact between the balls and the raceways is typically 30 degrees, although bearings with angles of 15 or 40 degrees are also available. The greater the angle, the higher the axial load capacity of the bearing.
Double row angular contact ball bearings are typically used in applications that require high radial and axial loads, such as in machine tools, pumps, and gearboxes. They are also commonly used in applications that require high speeds and high accuracy, such as in the aerospace and automotive industries.
One of the benefits of double row angular contact ball bearings is their ability to accommodate misalignment. The two rows of balls enable the bearing to compensate for small angular misalignments between the shaft and housing, which can help to extend the life of the bearing.
In summary, double row angular contact ball bearings are a versatile and reliable type of bearing that can be used in a wide range of industrial applications.