(1) low noise requirements of the rolling bearing

In our production standards in bearing, domestic and imported bearing of the old and new code bearing size parameters part of the table to heart single ball bearings and short cylindrical roller bearing for motor bearing the use of low noise varieties. Among them the ball bearings from φ 2.5 mm diameter to φ 60 mm have several varieties with Zl, Z2 Z3 and three suffix, corresponding to three different types of low noise requirements, and roller bearings from N309 type to N322 type eight model also has low noise made according to standard varieties.

These bearings can apply to other have low noise requirements in the machine, and the price is cheap, such as in the type and size can is suitable, as far as possible by using two types of low noise bearing.

(2) the noise relatively small bearing

When can't use the above two types of low noise bearing, domestic and imported bearing of the old and new code bearing size parameters table can be used noise relatively small bearing. Based on the comparison of the specific as follows:

1) ball bearing noise than roller bearings low, relative sliding less bearing (friction) relatively more than noise sliding bearing is low;

2) use entity maintains a bearing noise relatively than using stamping maintains a bearing is low; Use plastic maintains a bearing noise than using above two kinds of maintains a bearing is low; The count more, outside of the thick, the noise is small,

3) high precision bearings imported bearing use process need to pay attention to matters, especially higher accuracy of the roller bearings, and its noise than low precision bearing noise is relatively small,

4) small bearing noise than big bearing noise is relatively small.

 
For example to heart ball bearing noise than short cylindrical roller bearing of small, short cylindrical roller bearing and the noise than taper roller bearings of the little noise.



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