Analysis of Rolling Bearing Damage

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Rolling bearings are essential components in many mechanical systems. However, during operation, they can suffer damage due to various factors. Signs such as abnormal heating, vibration, and unusual noise may indicate that a bearing is failing. It's important to identify and analyze the causes promptly to prevent further damage. Common types of rolling bearing damage include: 1. **Fatigue Failure** – This occurs when the raceway or outer surface of the bearing is subjected to alternating loads. Over time, metal flakes off the surface, forming small pits that eventually grow larger. Improper installation or misalignment can cause uneven loading, leading to early fatigue damage. 2. **Cracks and Fractures** – These can result from manufacturing defects, improper heat treatment, or excessive interference fit. Stress concentrations caused by grooves or poor design can also lead to cracks in the inner or outer rings. 3. **Indentation** – Hard particles entering the bearing can create indentations on the rolling surfaces. Excessive impact loads can also cause plastic deformation, resulting in dents or pits. Even when the bearing is not in motion, heavy loads can cause similar issues. 4. **Wear and Abrasion** – Poor sealing allows dust or debris to enter the bearing, causing scratches and wear on the contact surfaces. This increases vibration and noise, reducing the bearing’s performance and lifespan. 5. **Electrical Corrosion** – When electric current passes through the bearing, small sparks can occur, leading to localized annealing and pitting on the contact surfaces. In severe cases, large pits may form. 6. **Rusting and Corrosion** – Exposure to moisture, acid, alkali, or salt, or using an incorrect lubricant, can cause corrosion. Even minor corrosion can render a bearing unusable. 7. **Cage Damage** – Especially in high-speed bearings, inadequate lubrication can cause the cage to wear or collide with the rolling elements or raceways, potentially leading to cracking. The dust seal plays a crucial role in extending the life of an imported bearing. Traditional seals often have limitations, such as poor elasticity and weak sealing performance. However, modern designs, like the hook-shaped curling seal, offer significant improvements. This type of seal enhances both elasticity and strength, ensuring better sealing even under varying conditions. It also improves the pressing process, making it more efficient and reliable. In addition to these common damages, regular maintenance and proper installation are vital for prolonging the service life of bearings. Monitoring their performance and addressing any issues early can prevent costly failures. For more information on bearings, check out related topics such as sliding bearing maintenance, car protection techniques, and bearing locking methods. This article was originally published on China Bearing Network. Link: http:// Please visit China Bearing Network for more details: http:// Previous: Grease Lubrication Smoothness Repair Next: Basic Knowledge of Hard Grinding of Bearing Balls

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