The correct use of the hang of timken outer spherical bearing to reduce noise is introduced

Timken bearing raceway groove sound sound and its control method is when running outside the spherical bearing, rolling on the surface of the raceway of the rolling element and a line of continuous sound, is unique to occur in all bearing the basic sound. General bearing ring raceway is combined with other sounds. Ball 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 timken bearings, 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. Method to control the sound of raceway are: choose low noise outside the spherical 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. 1. Bearing the dismantling of outer spherical bearing before installation should be clean. When installed, you should use the special tool to auxiliary sell straight uniform pressure into the, don't use hammer percussion, specifically prohibit direct bearing on tap. 2. Bearing lubrication timken bearing two kinds of commonly used lubricants lubricating oil and grease. When the peripheral speed of the shaft is smaller than 4 - 5 m/s, or the car cannot be used lubricating oil, lubricated by grease. Use grease should pay attention to two questions, one is according to the requirements of the car manual, choose suitable type of grease. Special attention should be paid to the timken bearings, to advocate 'empty hub lubrication', only the outer layer of the tu yi on spherical bearing the right amount of grease, otherwise, not only waste and poor heat dissipation, still can make heat grease spillover, may affect the braking performance. Brand to choose according to the requirement of the car manual of lubricating oil, and car maintenance cycle change in time, released after the old oil is to add new oil after cleaning of institutions, oil should be added to the line, or refueling and level, not more. Timken bearing of rolling mill rolling mill and its control method is the outer spherical bearing in the harsh metal can occur in all occasions, mostly happens in large type bearing grease lubrication, and in the performance degradation occurred more often in grease base oil, 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 bearing, if necessary or appropriate to reduce the timken bearing radial clearance, the use of high performance grease and improve the rigidity to suit the outer spherical bearing parts.