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(1) requirement of low noise rolling bearings
Production of standard bearings some single row radial ball bearings and cylindrical roller bearings for low noise motor bearing used. Inner diameter of ball bearings from 2.5mm to 60mm there are a number of varieties with Zl, Z2 and Z3 three suffixes, which correspond to three different low-noise requirements, N309 in roller bearing to the N322-a total of eight models at low noise standard varieties.
These bearings can be applied to other machines with low-noise requirements, and the price is cheap, can meet the requirements on the type and size, as far as possible the use of these two types of low noise bearing.
(2) noise is relatively small bearing
When you can′t use the above two types of FAG bearings with low noise, noise can be used relatively small bearings. The basis of comparison are as follows:
1) lower than roller bearings ball bearing noise, relatively plain less FAG bearings (friction) low noise more than the relative sliding bearing;
2) using solid cage bearing noise is relatively lower than that of FAG bearings use cages; with a plastic bearing cage noise ratio using the above two kinds of bearing cages are low; more balls, outer ring thickness, less noise,
3) high precision bearings, especially the rolling high precision of FAG bearings, their noise than the lower-precision bearing noise is relatively small,
4) than small bearing noise bearing noise is relatively small.
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