Ball track sound is a kind of stable and successional noise that is made by the circulation of bearing when the ball is rolling in the ball track. People will notice it only when the sound pressure level and express are loud. Actually sound power of the ball track is limited. The sound of high quality 6203 bearing is 25-27dB, The single row deep groove ball bearing has the typical model of this noise. It has the following features:1.noise and vibration are random

SF-2 boundary lubricated bearings plus: acid poly A with formaldehyde, with high wear resistance, bearing surface arrangement of the law must be fitted with a storage pit filled with grease, especially for high load low speed rotational motion, rolling motion, and often contain negative, the formation of lubrication is not easy to open and close the site, in the boundary lubrication conditions, without refueling for long-term use and maintenance,

Currently, the most widely used high-speed spindle bearings is hybrid ceramic ball bearings, which use rolling or hot isostatic pressing Si3N4 ceramic ball bearing ring remains rims. This bearing high standardization, low price, small changes in the machine tool, easy maintain, high-speed operation suitable for occasions. It's d · n values over 2.7 × 106. In order to increase bearing life,

Bearing Selection of the three major factors must be considered is the speed limit, required service life and is expected to absorb the workload, which is bearing the selected three performance requirements must be met.Speed limit is the maximum allowable bearing rotation speed exceeds this limit, the bearing operating temperature will continue to rise, dry lubricant, so bearing stuck, so speed limits of the selected bearing bearings intended to take more than the maximum working speed than 10% is appropriate.

Bearings running hot1, lubricating oil or grease select unreasonable, lubrication system configuration is reasonable, good heat dissipation;2, to how much the temperature, whether within the allowable range;3, pretension is too large, smaller clearance;4, precision bearings for compliance; whether there is damage;5, using the environmental impact of the bearing, such as whether the dust and other particles into the bearing; 6, bearing selection is correct,

Acoustic detection of bearing anomalies present in two ways. One is the detection method based on acoustic noise, and the other is based on the vibration detection. (A), noise detection method: the noise is less than 20db silencer based environment, the use of high-quality microphones to extract a certain distance and direction of the sound pressure bearing signal, and by a certain method to extract the abnormal sound component abnormal sound is a direct measurement method.

Bearing the seal can be divided into two categories own seal and the added seal. The so-called sealed bearings are the bearing comes into its own manufacturing unit with the sealing performance. Such as bearings with dust cover, seals, etc.. This sealed space is small, installation and removal easy, cost is relatively low. Plus the so-called bearing sealing device is installed within the end cap and other manufactured with a variety of performance seals. 

Bearing installation should be based on bearing structure, size and bearing components with the nature of the pressure should be directly added to the tight end with the ring surface was not passed through the rolling pressure, bearing installation method:  1. Heating with  Bearing or bearing by heating, using thermal expansion will be tight fit into a song with the installation. Is a common and labor-saving installation method. This method is suitable for large amount of interference bearing installation,