Bearing raceway acoustic raceway and its control method is when the bearing is r
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But with the increase of rotational speed, the noise will disappear. But with the increase of rotational speed, the noise will disappear. On the rolling control method for impact sound: appropriate reduction of radial clearance, the use of reasonable structure and materials with cage bearings compliance.
A creak and control method of imported bearings creak metal friction sound cylindrical roller bearings are likely to occur in all cases of harsh, mostly in the larger models grease lubricated bearings, the grease base oil on the performance degradation in more easily, almost does not occur under oil lubrication. In addition, more vulnerable in the winter, when under purely radial load, prone to big occasions in a radial clearance, and with different model sizes, easy to occur within a specific speed range, both continuous and intermittent. The outer ring raceway special processing methods can prevent creak appears, when necessary, can choose this kind of bearing, or appropriate reduction of radial clearance of bearings, using high performance greases and improve the rigidity of bearing matching parts.
1) standard (G) tolerances for the bearing;
2) radial bearings only bear radial load thrust bearings only bear axial load;
3 =0.1C (C) for dynamic load rating bearing);
4) rigid bearing seat and the shaft;
(5) the lubrication and cooling conditions normal.
When the import bearings operating in the 0.1C load conditions, the rolling body and rolling contact surface between the word stress increases, the operating temperature of the bearing is increased, the performance of lubricants is relatively worse, therefore, bearing speed limit will be reduced accordingly.
For the range of C/=10, the limit speed reduction is very small, so it can not be considered, which is based on f1=1 value.
The centripetal bearing the load, due to the increase in the number of rolling load, friction increases, increased heat, lubrication and cooling conditions worsen, and force a cage is also increased, therefore, must be based on the bearing type and size of load angle, the limit speed of the bearing is multiplied by a a reduction factor F2 adjust.
The speed limit the speed can not be if the imported bearings to meet the application requirements, can use some improvement measures to improve, to meet the requirements of a more satisfactory. Such as improving bearing tolerance level; increasing the clearance; the use of special materials and improve the structure of cage; changing the lubricating methods, such as the use of oil and gas, oil mist and spray lubrication; improve the cooling conditions.
234407BM 234706BM 234406BM 517/2860V/YA 5610/2500 517/1720X1V 527/1181M 510/1180M 517/930 510/670 590/560 510/500 52780 59080 517/368M 51760U 517/238 6207-2ZN 6206-2ZN 6205-2ZN 6204-2ZN 6203-RZ 6203-2ZN 6202N 6202-2ZN 6201-2ZN 6200ZZ 6200-2ZN 62/32-ZN 62/32-Z 62/32N 62/32-2Z 62/32-2RZ 62/32-2RS 62/28-2RZ 62/22-2RZ 61996 61992 61988 61984
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Bearings generally sound is rolling road sound with other sounds. Ball bearing raceway is irregular, frequencies above 1000Hz, the frequency rate does not change with the speed, but the overall sound pressure level increases with acceleration of the speed. Raceway bearing large, the raceway acoustic sound pressure level decreases with the increase in viscosity of the rolling bearing; but say small, the sound pressure level in the viscosity increases to about 20mm2/s above, by a reduction to increase. The bearing seat more rigid, rolling road sound of a sound pressure level is low. Control of raceway acoustic methods are: the selection of bearing low noise bearings which waviness small, carefully select the use conditions. Rolling road sound often affects the entire mechanical noise, reduce the raceway can reduce the noise of the whole machine. Impact sound and its control method of rolling large models of ball bearings or cylindrical roller bearings under purely radial load and low speed operation, due to the centrifugal force of the rolling small, in the non load rolling will impact the holder or rolling road noise.But with the increase of rotational speed, the noise will disappear. But with the increase of rotational speed, the noise will disappear. On the rolling control method for impact sound: appropriate reduction of radial clearance, the use of reasonable structure and materials with cage bearings compliance.
A creak and control method of imported bearings creak metal friction sound cylindrical roller bearings are likely to occur in all cases of harsh, mostly in the larger models grease lubricated bearings, the grease base oil on the performance degradation in more easily, almost does not occur under oil lubrication. In addition, more vulnerable in the winter, when under purely radial load, prone to big occasions in a radial clearance, and with different model sizes, easy to occur within a specific speed range, both continuous and intermittent. The outer ring raceway special processing methods can prevent creak appears, when necessary, can choose this kind of bearing, or appropriate reduction of radial clearance of bearings, using high performance greases and improve the rigidity of bearing matching parts.
1) standard (G) tolerances for the bearing;
2) radial bearings only bear radial load thrust bearings only bear axial load;
3 =0.1C (C) for dynamic load rating bearing);
4) rigid bearing seat and the shaft;
(5) the lubrication and cooling conditions normal.
When the import bearings operating in the 0.1C load conditions, the rolling body and rolling contact surface between the word stress increases, the operating temperature of the bearing is increased, the performance of lubricants is relatively worse, therefore, bearing speed limit will be reduced accordingly.
For the range of C/=10, the limit speed reduction is very small, so it can not be considered, which is based on f1=1 value.
The centripetal bearing the load, due to the increase in the number of rolling load, friction increases, increased heat, lubrication and cooling conditions worsen, and force a cage is also increased, therefore, must be based on the bearing type and size of load angle, the limit speed of the bearing is multiplied by a a reduction factor F2 adjust.
The speed limit the speed can not be if the imported bearings to meet the application requirements, can use some improvement measures to improve, to meet the requirements of a more satisfactory. Such as improving bearing tolerance level; increasing the clearance; the use of special materials and improve the structure of cage; changing the lubricating methods, such as the use of oil and gas, oil mist and spray lubrication; improve the cooling conditions.
