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6204KA/C3 Bearing |
11,29,2016 |
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6204KA Bearing |
11,29,2016 |
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6204/C4 Bearing |
11,29,2016 |
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6204/C3 Bearing |
11,29,2016 |
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6204 Bearing |
11,29,2016 |
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6204 Bearing |
11,29,2016 |
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Bearing 204TN-Z |
11,28,2016 |
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Bearing 204KA-Z |
11,28,2016 |
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Bearing 0204 |
11,28,2016 |
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Bearing 180204 |
11,28,2016 |
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| News details |
Measures to be taken to solve bearing noise
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| Time：2016.11.09 News Sources：Shandong Xinkaite bearing Co.,Ltd. Views：
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Our vibration grading standards, there are JB / T7047 --- 93 "deep groove ball bearings vibration (acceleration) technical conditions" and JP / T5009--94 "deep groove ball bearings vibration (speed) technical conditions. These two standards have been revised several times, the work of the industry bearing vibration played a good role. However, now the user is not only asked to increase the Z4 group, VI group. More importantly, the users bearing to avoid abnormal sound or noise requirements from the standard reflected how abnormal sound and noise is an irregular, sudden or bursts of unpleasant stimulus sound. Is due to rolling surface injury, lubricant in the foreign body, cage and irregular rolling of the body caused by friction, from the received signal is the peak of the pulse. However, at present we have implemented two bearing vibration technical conditions, although the sub-Z1, Z2, Z3 group and V1, V2, V3 group, speed type and even divided into three bands, but the values are taken effective value (Basically close to the arithmetic average), abnormal sound, noise, vibration pulse peak is not reflected.
Bearing raceway sound is due to the rolling bearing rolling in the raceway rolling to stimulate a smooth and continuous noise, only when its sound pressure level or great tone when the cause for concern. In fact, the sound of the sound track is limited, as in normal circumstances, high-quality 6203 deep groove ball bearing raceway sound 5 ~ 27dB. This noise to bear the radial load of single row deep groove ball bearings for the most typical, it has the following characteristics.
First, the vibration frequency above 1kHz.
Second, the bearing rigidity increases, the lower the total sound pressure level, the type that the speed increases, the total sound pressure level also increased.
Third, the higher the viscosity of the lubricant, but for grease lubrication, the lower the sound pressure level, the viscosity of soap fiber shape and size can affect the noise value.
Fourth, no matter how the speed changes, the noise frequency is almost unchanged and the sound pressure level is increased with the speed increase.
Fifth, although the bearing raceway noise is unavoidable, but can take high-precision machining parts working surface, the correct selection and precise use of noise reduction to reduce vibration.
6, noise, vibration with randomness.
The sound source of the bearing raceway is due to the natural vibration of the ferrule after being loaded. When lubrication or machining accuracy is not high when the elastic characteristics will be related
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