What is the primary cause of bearing failure?

While improper installation is indeed a significant factor leading to bearing failure, the primary cause often cited across various sources is lack of lubrication. Bearing systems rely on a thin film of lubricant to minimize friction, reduce wear, and dissipate heat generated during operation. Without proper lubrication, bearings can experience immediate wear or even catastrophic failure due to increased friction and overheating.

Lack of lubrication can lead to metal-to-metal contact, causing pitting and surface degradation, which further exacerbates wear and ultimately leads to a breakdown of the bearing's functionality. Even if a bearing is installed correctly, the absence of adequate lubrication can quickly result in operational problems and premature failure.

Factors such as excessive load, wear and tear, or improper installation can contribute to bearing issues as well, but they are often secondary effects that can be mitigated by ensuring proper lubrication practices. Therefore, addressing lubrication is crucial for maintaining the integrity and longevity of bearing systems.