Will the accumulation of dust and dirt cause the ball bearing temperature to increase?

The accumulation of dust and dirt can indeed cause the temperature of ball bearings to rise, which is a complex and multifaceted process. The specific description is as follows:
Firstly, the adhesion of dust and dirt significantly increases the friction between the rolling elements and raceways inside the ball bearing. These tiny particles will embed into the contact surface of the bearing, causing abrasive wear and increasing surface roughness, thereby increasing friction. As the friction increases, the bearing needs to consume more energy to overcome this resistance during operation, and this energy is ultimately released in the form of thermal energy, cause to an increase in bearing temperature.
Secondly, dust and dirt may also affect the lubrication system of bearings. Lubricants play an important role in reducing friction, lowering wear, and cooling bearings in bearings. However, when dust and dirt mix into the lubricant, they can contaminate the lubricant and reduce its lubrication performance. This not only increases the friction and wear of the bearings, but also hinders the circulation and distribution of lubricants inside the bearings, resulting in insufficient lubrication. Insufficient lubrication will further exacerbate the friction and temperature rise of the bearing, forming a vicious cycle.
In addition, the accumulation of dust and dirt may also cause blockage and poor heat dissipation inside the bearing. Bearings generate a large amount of heat during operation, which needs to be dissipated through the bearing seat, lubricating oil, and cooling system. However, when dust and dirt accumulate inside the bearing, they can block the heat dissipation channels and reduce the heat dissipation efficiency. This will cause the heat inside the bearing to be unable to dissipate in a timely manner, cause to the problem of high bearing temperature.