(1) the requirements of low-noise rolling bearings
In the production of standard bearings, some single row radial ball bearings and cylindrical roller bearings for motor bearing varieties of low noise. Inner diameter of the ball bearings from several varieties from 2.5mm to 60mm with Zl, Z2 and Z3 three suffixes, respectively, corresponding to three different low-noise requirements, self-N309 roller bearings to the N322-total of eight models at low noise standards of the breed.
These SKF bearings can be applied to other machines with low-noise requirements, and the price is cheaper, such as types and sizes to meet the requirements, using as far as possible two types of SKF bearings with low noise.
(2) adopt SKF bearing noise is relatively small
When you cannot use the above two types of low-noise when SKF bearings, bearings can be noise is relatively small. Specific basis of comparison is as follows:
1) ball bearings at lower noise than roller bearings, SKF bearings are less relative sliding (friction) lower noise than the relative sliding more of SKF bearings;
2) using solid cages for SKF bearings noise relatively lower than the bearings use cages; use of plastic cages for SKF bearings noise than these two types of cages for SKF bearings are low; the ball more, thick in the outer ring, the noise is less,
3) precision of SKF bearings, especially the rolling element bearings with higher accuracy, its noise than low noise precision bearings is relatively small,
4) small noise than larger bearings SKF bearing noise is relatively small.
Such as noise than radial ball bearings cylindrical roller bearings of small, cylindrical roller bearing noise than noise of tapered roller bearings.
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