Sliding bearings play a very important role in the mechanical system in providing the smooth transmission of the power, the bearings are complex mechanical components, bearing normal wear and tear, which is normal. However, this attrition syndrome will cause the bearing has a much lower lifespan than it should have. Usually, bearing damage can be divided into three types: surface wear, assembly injuries and fatigue damages. In this article, we will discuss each of these types in different aspects.
Surface Wear
Bearings are usually mounted in pairs, with one working against the other. Damage can occur when one bearing member is spinning at a much higher rate than the other, resulting in sliding surface contact between the bearing members. This contact can cause wear and tear of the bearing geometry, resulting in rapid deterioration of the bearing and reduced bearing life. Inadequate lubrication or contamination can also result in surface wear.
Assembly Injuries
Assembly injuries occur when the bearing is assembled incorrectly. This can include incorrect bearing positioning or press fit, improper alignment of mounting surfaces, incorrect installation of lock rings, or incorrect fitment and alignment of shafts and housings. Failure to ensure a snug fit of the components can cause damages due to excessive radial and axial clearance.
Fatigue Damages
Fatigue damages occur around the raceway and rolling elements of the bearings due to frequent starting and stopping of the bearing resulting in vibrations. These vibrations cause a high frequency of shock-loading on the bearing which leads to the creation of tiny cracks on the surface of the races and rolling elements. This type of damage is difficult to detect as the crack sizes are too small to be visible with the human eye and can only be detected with the use of an electron microscope.
Conclusion
Sliding bearings are delicate components and care must be taken with their assembly and operation to ensure that damage does not occur. Bearing damage can be classified into three general categories; surface wear, assembly injuries and fatigue damages. All three can cause reduced bearing life when not addressed. To minimize the risk of bearing damage, routine maintenance and inspections should be conducted, and any found damage should be addressed immediately. Taking good care of your bearings can help keep your mechanical system running smoothly and avoid unnecessary maintenance costs.
