INA car bearing noise limit speed emergency measures

If the selection of the imported bearing speed limit speed cannot satisfy the use requirement, can use some improved technology measures to improve, to achieve a satisfactory requirements. Such as increasing auto bearing tolerance level; Appropriate increase of clearance. Use special materials and the structure of the improved cage; Change the lubrication method, such as lubrication oil and gas, oil mist and spray; Improve the cooling condition, etc. ( 1) Bearing raceway groove sound sound and its control method is when bearing is running, rolling on the surface of the raceway of the rolling element and a line of continuous sound, is unique to occur in all rolling bearings of the basic sound. General INA bearing ring raceway is combined with other sounds. Bearing raceway is irregular, frequency above 1000 hz, its main frequency does not change with speed, but its total sound pressure level increases with speed to speed up. Raceway large bearings, the rolling sound of sound pressure level decrease with the increase of the viscosity; The raceway small car bearing, the sound pressure level in the viscosity increases to about 20 was/s above, from decreased to increase somewhat. And the rigidity of the bearing, the greater the raceway of the lower the total sound pressure level. Such as radial clearance is too small, the total sound pressure level and race master frequency will increase sharply with the decrease of radial clearance. Control of raceway acoustic methods are: using low noise bearing is bearing waviness is very small, that is, carefully select and use conditions. Race often affect the mechanical noise, reduce the raceway can reduce the mechanical noise. ( 2) Impact of the rolling element and its control method for larger models of cylindrical roller bearing or bearing under pure radial load speed, due to centrifugal force is lesser, roller in the rolling body will impact the load area or race and making noises. But with the increase of rotational speed, the noise will disappear. Control method of rolling body impact sound: decrease the radial clearance, use with reasonable structure and material with kindliness auto bearing cage. ( 3) Bearing of rolling mill and its control method is the roll bearing in the harsh metal can occur in all occasions, mostly happens in large type bearing grease lubrication, and in the base oil performance degradation occurred more often in grease, almost does not occur when oil lubrication. In addition, more easily occur during the winter, when under pure radial load, the radial clearance prone to big occasions, and with different size, easy to happen in a certain speed range, both continuous and intermittent. External ring raceway take special processing method can prevent the occurrence of roll ring, can choose this kind of INA bearings, if necessary or appropriate to reduce bearing radial clearance, the use of high performance grease and improve to suit the bearing parts of rigidity. 1. The bearing structure and service conditions. Different structure for different service condition; Auto bearing parts structure different its processing technology is not the same, will affect its quality. So we should develop new product structure, to adapt to the different service condition, and can indicate the INA bearing instructions on its suitable service conditions or performance, to facilitate customer choice. 2. Strengthening technology research, improve the processing technology, improve the quality of processing, reduce the potential for defects of machining. As in the heat treatment on larger varieties inside and outside the circle, as far as possible in the lower quenching heating temperature, adapt to extend the time of heat preservation, to improve the concentration of alloying, increase the fracture strength of martensite, and on the premise of guarantee quality choose the higher tempering temperature to increase the impact toughness of artifacts. 3. Improved process monitoring method, and to promote the quality improvement of processing. Such as improve circulation channel curvature position monitoring, to improve the overall performance after auto bearing assembly, improve work INA bearings.