Persistence of Noise Appearance and Methods in Imported Bearings
Source: Bearing Network | Time: 2013-01-20
Imported bearings can sometimes produce unusual noises during operation, which are often caused by the free oscillation of the cage as it rotates. This noise occurs when the cage collides with the rolling elements or the inner/outer raceway. While this type of noise is common in all types of bearings, it typically has a low sound pressure level and is characterized by its low-frequency nature. Key features of this noise include: - It can occur in both stamped and plastic cages. - It remains consistent whether the bearing is lubricated with oil or grease. - It is more likely to happen when the outer ring is subjected to bending moments. - It becomes more noticeable when the radial clearance is larger. Since some gaps between the cage and the raceway are inevitable due to manufacturing tolerances, it's difficult to completely eliminate the noise. However, it can be reduced by minimizing installation errors and ensuring proper alignment. Another type of noise, known as "sticking sound," arises from friction between the cage and other bearing components, leading to self-excited vibrations. This is particularly common in deep groove ball bearings, where the cage may rub against the raceway under certain conditions. When a bearing is subjected to radial load and has poor lubrication, you might hear a “crackling†or “clicking†sound at the start of operation. This happens because the rolling elements move out of the loaded area, causing sudden acceleration and impact with the cage. Although this noise is normal, it usually disappears after a short period of operation. To reduce sticking noise, consider the following methods: - Ensure stable rotation by using a guide method for the inner or outer ring, and provide smooth surfaces for guidance. For high-speed applications, consider replacing L-shaped cage designs with Z-shaped ones that are supported by the rim. - At high speeds, bearings with larger pocket gaps tend to have greater oscillation amplitudes. Therefore, controlling the gap size is crucial. - Minimize radial clearance as much as possible. - Improve the precision and surface finish of the cage to reduce rolling element collisions. - Use advanced cleaning techniques to ensure parts and finished products are clean, enhancing overall bearing performance.
Recommended for friends: Comments | Close Window
| Bearing Related Knowledge |
| - Specific analysis of radial ball bearings - SKF bearing rolling bearing correction condition analysis of five major types of bearings in plastic machinery - KOYO imported bearing fatigue damage image analysis of the painful bearing in the device to the device after the inversion is not sensitive |
This article links to http:// Please indicate China Bearing Network http://
Previous: SKF Bearing Oil Smooth and Smooth Method Next: Bearing External Surface Grinding Disadvantages and Countermeasures Analysis
Stump Grinder Teeth,Tree Stump Grinder Cutter,Stump Grinder Tooth Replacement,Tree Stump Grinder Crusher Blades
Zhenjiang Weir Machinery Technology Co., Ltd , https://www.weircuttingpicks.com