Self-aligning Ball Bearings
Self-aligning ball bearings are bearings that maintain their alignment even when it is forced to misalign due to external forces. These bearings are designed to allow a degree of flexibility in the alignment of the bearing and its mounted components. This is due to the fact that within the bearing, the balls are free to move such that they can absorb misalignments even when high radial and axial loads are imposed on the bearing. Generally, selfaligning ball bearings operate on moderate to high speed under various loads.
Advantages of Self-Aligning Ball Bearings
There are several advantages that come with using self-aligning ball bearings. The bearings are ideal for use in installations where equipment has to undergo misalignments due to shaft deflection or mounting errors. The dynamic load capacity of the bearing is higher than that of aligned bearings since the misalignment is absorbed within the bearing. This implies that the bearing can operate at higher speeds and higher radial and axial loads can be imposed on it. Self-aligning ball bearings also have improved wear resistance since the misalignment allows natural sphericity of the ball and inner ring that ensures a smoother operation of the bearing.
Construction of Self-Aligning Ball Bearings
Self-aligning ball bearings consist of two rows of balls and a single row of an outer race. The inner race is composed of two grooves that allow the ball to move freely and maintain their alignment. The outer race leads the bearing to support the axial load that the bearing may be exposed to. In order for the bearing to survive in high load axial and radial conditions, the bearing is reinforced by either a steel or brass cage. The cage helps in ensuring that the balls do not come out of the bearing gap when exposed to high speeds and loads.
Application and Maintenance of Self-Aligning Ball Bearings
Self-aligning ball bearings are used in a wide range of applications and industries particularly in equipment that requires a degree of misalignment. Some of the common examples of the use of these bearings include automotive, motorsports, and industrial equipment. The bearings must be maintained properly to ensure effective performance of the bearing. It is important to frequently check the lubricant levels in the bearings and ensure that the lubricant is free of contaminants, such as dirt and dust. The bearing must also be regularly checked for any wear and tear, since this can reduce the life of the bearing significantly. If a wear and tear occurs, it is important to replace the parts immediately to ensure maximum performance.
Conclusion
Self-aligning ball bearings are versatile and are used in a variety of applications thanks to their ability to absorb misalignment of the load and its components. This ensures that the bearing can withstand high axial and radial conditions, making it highly reliable in various applications. The bearings can be maintained and regularly checked to ensure maximum performance and to extend their lifespan.
