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Bearings are one of the most important components in any machine. However, due to their high wear rate, bearings can be subject to a range of damages that can cause premature failure. Here, we look at the most common bearing damages and the necessary precautions to take to prevent them.
·Abrasion
A common type of bearing failure is abrasion, which occurs when wear particles from the bearing surfaces rub against each other. This leads to a breakdown of the bearing material and creates tiny nicks and scratches that lead to abrasion. Prevention of abrasion can be achieved by increasing the hardness or lubricating properties of the bearing surfaces or by regularly cleaning your bearings and lubricating them correctly.
·Fatigue
Fatigue failure occurs when the bearing experiences repeated loading beyond its capacity. This can be caused by too much heat, excessive vibration or lack of lubricant. It is important to detect the source of the fatigue failure to prevent further damage.
·Adhesive Wear
Adhesive wear occurs when two materials with significantly different coefficients of friction come into contact with each other such as plastic against steel. This causes the two surfaces to ‘stick’, resulting in plastic debris which can cause further damage to the bearing. Adhesive wear can be prevented by ensuring that all surfaces that come into contact with the bearing have a similar coefficient of friction.
·Corrosion
Corrosion is caused by water and/or dirt entering the bearing, which can lead to rust and may cause pitting or flaking of the bearing’s surfaces. In addition, contaminants can settle on the bearing’s surfaces and erode them. Prevention of corrosion is through proper sealing and installation techniques, good drainage and shielding from the elements.
·Oxidation
Oxidation is the result of high levels of heat in the bearing and is caused by the breakdown of lubricants and metals. Oxidation can be prevented by using higher quality, heat resistant lubricants and by ensuring that the bearing is kept cool.
·Contamination
Contamination can lead to abrasion, fatigue or adhesion failure. It also accelerates wear on the bearing and can lead to seizure. Contamination can be prevented through regular inspection for dirt, dust, or other debris, as well as regular lubrication and good housekeeping practices.
The above points describe the most common bearing damages and the necessary precautions to take to prevent them. To ensure the long life of your bearings, it is important that you regularly inspect and maintain your bearings to spot any damages. This can help to prevent bearing failure and maximize the life of your machine.
