INA whole eccentric turning arm bearing noise when using problem solving method

INA bearing raceway groove sound sound and its control method is when bearing is running, the moving body move on the surface of the raceway and send out the voice of a line of continuous, happened all move bearing characteristic of the basic sound. General overall eccentricity is equal to the raceway turning arm bearing voice with 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 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 will follow the decrease of radial clearance and main frequency increased dramatically. Control of raceway acoustic methods are: using low noise bearing is bearing waviness is very small, that is, carefully choose to use the premise. Race often affect the mechanical noise, reduce the raceway can reduce the mechanical noise. 1, grease lubrication of INA bearings and lubrication is the best in the equipment downtime and implementation of the plan and added on a regular basis, at the same time, the old rid grease or via the drain the old oil out empty. Before adding fresh grease injection nozzle should be wiped clean. If there is no zerk bearing box, should open the bearing box cover or end cover, in order to remove the old grease, clean up after, supplement the same type of fresh oil. 2, lubricating oil, check the oil level of lubricating oil and the oil, in general, a normal oil level equipment oil level Windows or mark a third - Two-thirds of the range. Oil compensating way for oil cup, the display of the oil level represents oil compensating ability, and the bearing box oil level is to meet operation requirements, oil cup CPC a lower than a quarter of its total volume filling oil may be considered. Check and repair method oil, remove a small amount of oil as a sample and fresh oil, has the ability to unit may be considered for oil testing, to ensure the oil qualified. If the sample looks like clouds, so may be mixed with water as a result, people often say that oil emulsification, at this time should replace the lubricating oil. INA bearing of rolling mill roll ring and its control method is the overall eccentric turning arm bearing can occur on all occasions sharp metal friction sound when most needed is least heeded, mostly happens in large type bearing grease lubrication, and function in the base oil 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 of big occasions occur easily, and with different size, easily happen in a certain speed range, both continuous and intermittent flush. Bearing external ring raceway take special processing method can prevent roll ring flush, can choose this kind of bearing, if necessary or appropriate to reduce bearing radial clearance, good use function of grease and progress and the overall eccentric turning arm bearing rigidity of matching parts.