IKO roller bearing causes of noise is more complex

Bearing inner ring and the shaft is a tight fit, outer ring and shell as a loose fit, available press will IKO bearing on bearing installation first, then, together with the bearing axis in shell, when pressed on the bearing face cushion a soft metal materials assembling casing ( Copper or soft steel tube) 。 Assembling casing inside diameter should be slightly larger than the diameter of a journal, outside diameter should be less than the rim diameter of bearing inside diameter, to avoid pressure in keeping the frame. Large Numbers of installing a bearing can add a handle on the casing. In the absence or cannot use press, assembling casing and small hammer to install the bearing can be used. Hammer force should be evenly spread to IKO bearing ring end face of the whole on the circumference of a circle, therefore assembling casing under the hammer face should be made into spherical. Install roller bearing the force required for bearing size and cooperate with related to the size of the amount of interference, the interference for the large amount of medium and large bearing commonly used the method of hot charging. The bearing before hot charging or separable bearing ring into the fuel tank or dedicated heater evenly heating to 80 ~ 100 ℃ ( Should not exceed 100 ℃) 。 Before installation should clean the bearings. 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. When bearing race with a hole loose, shall repair or replace IKO bearing seat hole, do not use on the surface of bearing with pitting or pad barely use copper method. Roller bearing removal should be used when appropriate to pull pull the bearing, do not use a chisel, hammer percussion bearing, etc. Lubricating oil has the advantage of small frictional resistance, and heat dissipation, it is mainly used for the bearings of high-speed and working environment temperature is higher. 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 flush ( Depending on the auto specific structure, requirements) , and not more. The cause of the high bearing temperature are: lubricating oil quality does not conform to the requirements or metamorphism, lubricating oil viscosity is too high; The assemble tight ( Inadequate clearance) ; Bearing assembly too tight; Bearing race in internal rotation shaft or housing; Too much load; IKO bearing cage or rolling body fracture, etc. Roller bearing causes of noise is more complex, one is the bearing inner and outer surface wear. Due to the wear and tear, damage to the bearings and shell, bearing and shaft cooperate relationship, lead to axis deviation from the correct position, when axis at high speed movement produces sound. When the bearing fatigue, its surface metal flake, also can produce sound make bearing radial clearance increases. In addition, the bearing lubrication, forms the dry friction, and bearing broken etc all make abnormal noise. IKO bearing wear loose rock, loose cage damage, also can produce sound. Bearing roller and the inner and outer ring raceway surface under the role of the periodic pulse load, resulting in a periodic change of contact stress. When stress cycles after reaching a certain value, the rolling element bearings, their work within or surface produce fatigue spalling. If the bearing load is too big, can make the fatigue. In addition, IKO bearing installation is not straight, shaft bending, also can produce roll flaking off. Roller bearing raceway and roller contact surface appear uneven pits, IKO bearings produce plastic deformation. The reason is bearing under static load or shock loading, local stress exceeds the yield limit of material on the surface of the work, this kind of situation usually happened in the low-speed rotation of the bearing.