Noise coming from a bearing is associated with damaged bearings in a car. When bearings are damaged, excess noise is probably the easiest way to identify the bearing is broken. When some of the bearing rings and balls are not perfectly round and smooth, even after extensive fine grinding and polishing, the imperfections can cause unwanted vibration, potentially damaging the bearing during its lifespan.
Usually, there are machining imperfections in the form of rough and uneven surfaces which can cause rings to move and oscillate radically. The amount and speed of movement contribute to bearing vibration and noise. Rough or damaged balls or raceways, contamination inside the bearing, inadequate lubrication, incorrect shaft or housing placements etc can all contribute to bearing noise.
If you are searching for a bearing with low noise, a good quality bearing will have an excellent surface finish on its raceways. During the manufacturing process, the roundness and smoothness of the bearings are closely controlled.
Bearing fitting is also an important factor to consider. Poor fitting practices can cause a dent in bearing raceways which can increase vibration. Similarly, contaminants in the bearing can cause unwanted vibration. To be low noise, bearings should be free from contaminants. If the bearings are not used in a clean environment, contact seals should be used to provide protection against contaminants. In a good-quality bearing, a low-noise lubricant is recommended.
To eliminate the sources of undesirable noise in machines, greases must be able to reduce the generation of noise in bearings significantly. Such products are referred to as low-noise greases. Conventional non lubricating greases contain solid particles, but low-noise greases will never have it. They show high degree of purity and undergo a carefully designed production process. Noise minimization will be perfectly visible.
Comments
Post a Comment