(1) low noise requirements of the rolling bearing

In the standard bearings produced in China, part of the single row radial ball bearings and cylindrical roller bearings are low noise power supply unit bearing varieties used. Wherein the ball bearing from the inside diameter φ2.5mm to φ60mm There are several varieties with Zl, Z2 and Z3 three suffixes, each corresponding to three different low noise requirements, and roller bearings in a total of eight models from N309 to N322 type also have type manufactured by low-noise standard varieties.

These bearings can be applied to other low noise requirements of the machine, and cheap, as in the type and size can be desirable to maximize the use of these two types of low-noise bearings.

(2) a relatively small bearing noise

When you can not use both types of low-noise bearing noise can be relatively small bearings. Specific comparisons based on the following:

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

2) Use of solid cage bearing noise than using the press to maintain relatively low loader bearings; plastic cage bearing noise than the above two cage bearings are low; the ball a few more of the outer thick, noise also smaller,

3) High-precision bearings, especially the higher precision bearing rolling elements with relatively small noise than the low noise precision bearings

4) noise than the noise is relatively small bearing large bearing.

Such as ball bearings to noise ratio of short cylindrical roller bearings small, short cylindrical roller bearings tapered roller bearing noise surpasses the noise.