resistant bearings, chemical industry bearings Yuyao Shuguang stainless steel bearing Co., LTD , https://www.shuguangbearing.comSummary of KOYO Spherical Roller Bearing Damage Performance
During the operation of a KOYO spherical roller bearing, sudden signs such as abnormal heat, increased vibration, and unusual noise may appear. These symptoms indicate that the bearing might be damaged and require immediate inspection and analysis. According to experts, several common types of damage can occur:
- **Cracks and Fractures**: These often result from manufacturing defects, improper heat treatment, excessive interference fit, or incorrect assembly. Additionally, grooves on the raceway can lead to stress concentration, which may cause cracks in the rings.
- **Electrical Corrosion**: If an electric current passes through the bearing, small sparks may occur, causing localized annealing and small pits or dark spots on the surface. In severe cases, large pits may form.
- **Spalling**: This occurs when the raceway or rolling elements lose material due to alternating loads. It starts as small flakes and gradually expands into larger pits. Misalignment between the bearing housing and the shaft centerline can cause uneven loading, leading to early fatigue failure.
- **Cage Damage**: Especially in high-speed bearings, a lack of lubrication can cause wear between the cage, rollers, and raceways, potentially leading to cage cracking.
- **Wear Due to Poor Sealing**: If the seal is not effective, dust or particles can enter the bearing, causing scratches or severe wear on the contact surfaces. This can also increase vibration and noise levels.
- **Indentation**: Hard particles entering the bearing can cause indentations between the rolling elements and the raceway. Excessive impact loads may also lead to plastic deformation and pitting on the contact surfaces.
- **Corrosion**: Water, acid, alkali, or salt can penetrate the bearing or mix with the lubricant, causing corrosion. Even minor corrosion can render small bearings unusable.
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Source: Bearing Network | Date: January 5, 2014