(1) low noise requirement of rolling bearing
In the production of standard bearings in China, some single row radial ball bearings and cylindrical roller bearings with low noise for use in motor bearing varieties. Inner diameter of the ball bearing them from 2.5mm to 60mm there are a number of varieties with Zl, Z2 and Z3 are three suffixes, which correspond to three different low-noise requirements, N309 and roller bearings to the N322-a total of eight models also have varieties of low noise standards.
The SKF bearings are fully applicable to other low-noise requirements in the machine, and the price is cheap, as in type and size to meet the requirements, as these two types of low noise bearing.
(2) the use of relatively low noise bearings
Cannot be used when the above two types of low noise bearing, the bearing noise is relatively small. The basis of comparison are as follows:
1) lower than roller bearings ball bearing noise, less relative sliding bearings (friction) more noise than slide bearings;
2) using solid cage bearing noise is relatively lower than that of bearing cages; use plastic bearing cage noise than these two cages of FAG bearings have a low count, thickness of the outer ring, less noise.
3) high precision bearings, in particular of the rolling element bearings with higher accuracy, the noise than the lower-precision bearing noise is relatively small,
4) NSK bearings noise bearing noise is relatively small.
Such as noise than radial ball bearings cylindrical roller bearings is small, short cylindrical roller bearing tapered roller bearing noise noise than small.