Analysis of bearing raceway noise problem

Source: China Bearing Network Time: 2018-06-24

/*250*250 was created on 2017/12/25*/ var cpro_id = 'u3171089';

The raceway noise of the bearing; the raceway sound is due to the rolling of the rolling body in the raceway when the bearing rotates, and the sound is declared to be a smooth and continuous noise; only when its sound pressure level or cavity is extremely large, it leads everyone to pay attention.
In fact, the sound energy evoked by the raceway sound is limited; as in normal conditions; the quality of the 6203 bearing raceway sound is 25 ~ 27dB. This noise is the most typical of single row deep groove ball bearings that accept radial load; It has the following features:
a, noise, oscillation is random,
b, the oscillation frequency is above 1kHz,
c. No matter how the speed changes, the main frequency of the noise is almost constant and the sound pressure level is improved with the addition of the speed.
d. When the radial clearance increases; the sound pressure level is sharply added,
e, the rigidity of the bearing seat increases; the lower the total sound pressure level; even if the speed increases, the total sound pressure level is not added,
f, the higher the viscosity of the smoothing agent; the lower the sound pressure level; but the smoothness of the grease; the viscosity and the shape of the soap fiber can affect the noise value.
The source of the raceway sound is caused by the natural oscillation of the ferrule after the load. Because the elastic touch of the ferrule and the roll body constitutes a nonlinear oscillating system. When the smoothness or the machining accuracy is not high, the elastic characteristic is aroused. Related natural oscillations; become into the air and become noise.
Although the raceway noise of the bearing is unavoidable, it can adopt the high-precision machining parts to work externally; correctly select the bearing and accurately use the bearing to reduce noise and vibration.

Recommend to friends comments close window

Bearing related knowledge

Common Terms and Definitions for Rolling Bearings: Bearing Parts
The sequence of SKF bearing finishing process talks about the relationship between NSK bearing material and its function. Bearing steel new skill and direction Skill analysis of high speed spindle bearing for machine tool

This article links to http://
Please indicate the bearing network http://

Previous:Hot SKF aviation rolling bearing skills Next: Why is the heat transfer oil circulation pump close to the motor bearing simple damage

Gate Valves

Gate Valves are called "full-flow" valves; there's a direct unobstructed path for flow right through the middle of the valve. A wedge-shaped brass gate is lowered into a machined slot to close the valve. They should either be completely open or completely closed. Water flowing through a partially open gate valve wears away the metal and causes the valve to fail over time.

Brass Gate Valve, Flanged Gate Valve, High Pressure Gate Valves, Water Gate Valves

ZHEJIANG KINGSIR VALVE CO., LTD. , https://www.kingsir-valves.com