Sound of bearing Raceway Raceway when the SKF bearings and its control method when running, rolling it across the Raceway surface and make a slippery continuum of sound, is the basic sound of all rolling bearings will be unique. General bearing Raceway acoustic sound that is combined with other sounds. Ball bearing roller is irregular, above 1000Hz frequency, frequency of rate changes with the speed, but the overall sound pressure level increases with accelerating speed of. Roller bearing raceways for its acoustic sound pressure level diminishes with the increase of viscosity while small bearing Raceway, its sound pressure level in the viscosity increases to about 20mm2/s above, by reduction to increased. Greater the rigid housings, roller lower the overall sound pressure level of sound. Radial clearance is too small, and Raceway total sound pressure level and frequency will increase sharply as the reduction in radial internal clearance. Method of controlling the rolling sound: Optional low noise bearings bearing corrugated-small, carefully choose the conditions of use. Acoustic noise affecting the whole machinery of the Raceway, Raceway reduction can reduce the noise of machinery as a whole.
Impact sound and its control method for a larger model of the rolling ball bearings or cylindrical roller bearings under purely radial load at low speed operation, due to the centrifugal force of the rolling small load-free area in the rolling elements roll cage will shock or road noise. But as the speed increases, this noise will disappear. Rolling control method for impact sound: appropriate reduction of radial clearance, reasonable structure and material compliance cage bearings.
First of all, bearing size limit.
FAG bearings can usually installation space is limited. In most cases, is based on the mechanical design or other design limitations. Bearing type and size, and therefore in the selection decision is based on the diameter of the bearing. Therefore, standard diameter size of the main dimension tables are prepared in accordance with international standards.
In many forms of standard bearing dimensions, preferably in the machinery and equipment design using standard selection of bearing size, the direction is changing. Typically, the basic load ratings shown in table size. However, the axial load and a radial load, and so on, can also be an important factor in selecting the appropriate bearing. Size for a long time, needle roller bearings typically have a higher rate of vibration and shock loads and withstand greater load capacity.
Second, speed of the bearing.
Allowable speed is based on the bearing type, size, precision, basket, load, lubrication, cooling and other factors determine. Bearing lubricants listed in the table are allowed under the standard precision bearings and grease speed. Typically, deep groove ball bearings, self-aligning ball bearings and cylindrical roller bearings are suitable for high speed applications.
Third, bearing tolerances.
NSK bearings dimensional accuracy and precision of rotation is based on the International Organization for Standardization (ISO) and JIS Standards. High precision, high speed machinery, suggested five or more precise bearings, deep groove ball bearings, angular contact ball bearings or cylindrical roller bearings are suitable for running on a machine with high accuracy. Rigidity, bearings, rollers and raceways will elastic deformation of contact pressure. Some machines require a reduction of elastic deformation. Than ball bearings roller bearing has a small elastic deformation.



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