Date: 2013-08-20

Raceways of tapered roller bearings the noise solutions

We all know that tapered roller bearings in the long term is not replaced, does not maintain a rolling case even attended some noise, we have to analyse the cause occurs and how to resolve it.
Raceways of the noise, the sound is due to rotation raceways of tapered roller bearings when you scroll the scroll in the corner, stimulate the smooth and continuous noise contact ball bearing species, only when the sound pressure level or when tone, a great attention.
In fact, from the roller inspired sound of the acoustic energy is limited, because in normal circumstances, high-quality sound 6,203 Raceway 2 rolling mill bearing 527 decibels. This radial single row deep groove ball bearings in the most typical load noise, it has the following characteristics.
　　Vibration frequency higher than 1kHz.
　　Block rigidity had been added, the total sound pressure level lower, so this type of speed increase, the overall sound pressure levels do not increase.
　　Higher viscosity of the lubricant, grease lubrication, sound pressure level, the lower the SOAP viscosity of fiber shape and size effect of noise.
　　No matter what speed change bearing factory, the main frequencies of sound pressure level is almost the same speed increase.
　　Raceways of tapered roller bearings noise sound is inevitable, but could be high precision processing parts of work surface, right choice and use of precision cylindrical roller bearings make noise vibrations.
　　Random vibration noise.
　　After bearing, naturally arising out of Raceway on vibration load of sound sources. When lubricating or accuracy is not high, this will stimulate the tapered roller bearing vibration characteristics of the flexibility inherent in moving in the air, and then passed to the noise. Because of rings and rolling elements form an elastic contact vibrations of nonlinear systems. When radial internal clearance increased sound pressure level significantly increases.

 

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