Bearings 'cars bearing speed limit imports INA and noise emergency measures'

   bearing manufacturer speed limit speed can not meet the requirements, we can use some improvement measures to improve the technology in order to achieve a more satisfactory requirements. Such as improving automotive bearings tolerance class; properly increase the clearance; use of special materials and improve the structure of the cage; changing lubrication, such as the use of oil and gas, oil mist and spray lubrication; improved cooling conditions.
 (A) the bearing raceway raceway sound and control the sound is running when the bearing, the rolling body raceway rolling issued a slippery continuous sound, all bearing the unique occur basic sound . General INA Bearing sound that is raceway sound plus other sounds. Bearing raceway sound is irregular frequencies above 1000Hz, its main frequency does not change with the speed, but the total sound pressure level increases with the speed acceleration. Bearing raceway loud, the sound pressure level of its raceway with the viscosity decreases with increasing; while the sound of a small car rolling bearing, its level increased in viscosity to about 20mm2 / s or more, by reducing the to be increased. Greater rigidity of bearing raceway total sound pressure level is lower. If the radial clearance is too small, the total sound pressure level raceway and the main frequency will decrease as the radial clearance increases dramatically. Control raceway sound methods are: selection of low-noise bearings that waviness small bearings, judicious selection of the conditions of use. Raceway sound often affect the entire mechanical noise reduction raceway sound can reduce the overall mechanical noise.
 (2) rolling sound and control the impact of the larger types of bearings or cylindrical roller bearings in the pure radial load low speed, the centrifugal force due to rolling body is small, in a non-load zone of rolling element will impact cage or raceway and noisy. However, as the speed increased, the sound will disappear. Impact on the rolling sound control methods are: appropriate to reduce the radial clearance, the use of reasonable structure supple material cage automotive bearings.
 (3) bearing jarring sound and control jarring sound is bearing on all occasions that may occur harsh sound of metal friction occurs mostly in grease lubricated bearings in larger models, while in the performance degradation of lubricating base oil tallow more likely, in almost no oil lubrication. In addition, more prone to winter, when subjected to pure radial load, radial clearance prone to big occasions, and with models of different sizes, at a particular speed range prone to both occur consecutively will appear intermittently. Outer ring raceway take special processing methods to prevent the emergence of creaking, if necessary, use this INA bearings, or appropriate to reduce the radial clearance, using excellent performance match with the bearing grease and improve parts of the rigidity.
1 bearing structure and conditions of service. Different structures for different conditions of service; auto bearing parts processing technology on their different structures vary, also affect its quality. Therefore, we should develop new structured products, in order to adapt to different conditions of service, and in the INA bearings indicate its suitability for use on the service conditions or performance, in order to facilitate customer choice.
(2) to strengthen technology research, improved processing techniques to improve processing quality and reduce the possibility of processing defects. If the heat treatment on the larger species inside and outside the ring, as far as possible with the minimum quenching temperature, holding time to adapt to enhance the alloying concentration, increasing the fracture strength of martensite, and in the selection of the premise of guaranteeing quality higher tempering temperature of the workpiece in order to enhance impact toughness.
3. Improved processing means of monitoring and promoting quality improvement process. Such as improving the monitoring of the flow path curvature position, improve the car's overall performance after bearing assembly, improving working conditions INA bearings.