The installation of the good quality of angular contact ball bearing is more should pay attention to these matters

Bearing durable - at ease Self-aligning roller bearing electricity department, the author explain for you: good quality of angular contact ball bearing installation should pay attention to these matters more, good quality of angular contact ball bearings are used in the high-speed rotating situation of load lighter, bearings and high precision, high speed, low temperature rise, low vibration and service life. Often for high speed motorized spindle bearing parts installed in pairs, is the key to the high-speed motorized spindle surface grinding machine fittings. The main technical indicators: 1. Bearing precision index: more than GB / 307. 1 - 2 94 P4 level precision. High-speed performance indicators: dmN value of 1. 3 to 1. 8x 106 /min 3. The service life ( On average) :> 1500 h high-speed precision angular contact ball bearing service life had a lot to do with the installation, should pay attention to the following 1. Bearing installation should be clean, clean the room, the bearing should be carefully selected, bearing with baffle passes through grinding, and in keeping the baffle on inner and outer contour under the premise of baffle parallelism should be controlled below 1 um. 2. Bearing should be cleaned before installed and when cleaning inner ring ramp up, flexible hand induction, no stagnation, air-dried, into the specified amount oil, if oil mist lubricating oil should be in a small amount of oil mist; 3. Bearing installation should use specialized tools, force uniform, do not knock, bearing trust durable ( ) 4. Bearing deposit should be clean and ventilated, non-corrosive gas, relative humidity is not more than 65%, long-term storage should be rust on a regular basis. For spherical roller bearing, the internal both rolling friction, sliding friction, under the condition of the high speed rotating, such as poor lubrication can appear wear away, warming, burns, until all the damage. Such as oil viscosity is too low, when bearing pressure is bigger, is easy to cause oil membrane rupture, causing dry friction and aggravate wear; Lubricating oil viscosity is too big, light can increase bearing frictional resistance, make the oil temperature is high, or will affect the flow of oil, it is difficult to form oil film, but harmful to the bearing, therefore, the rolling bearing lubricating oil viscosity is particularly important. Use ball bearings and cylindrical roller bearing of machine oil in medium and low speed and normal temperature conditions, generally can choose lan22, lan32, l an46 grades of lubricating oil viscosity, high speed, diameter of bearing can choose lower viscosity, lubricating oil, on the contrary, with higher viscosity of lubricating oil. Tapered roller bearing, spherical roller bearings, thrust spherical roller bearings, because at the same time subject to radial and axial load, so under the condition of the same temperature, its better than ball bearings and cylindrical roller bearing with high viscosity of lubricating oil. Under the condition of constant velocity, temperature, tapered roller bearing and spherical roller bearing, oil viscosity minimum limit of lan32 machine oil viscosity. Thrust spherical roller bearing oil viscosity minimum limit of lan46 machine oil viscosity. Needle roller bearing with large sliding friction, the need for more effective lubrication, so the viscosity of the oil level compared with the same specifications with the speed of the ball bearings, usually should be lower. For the sliding bearing, the oil viscosity of choice and the axis neck diameter, axis rotation speed and the size of the load per unit area. Its viscosity range in lanl5 ~ lan68. High speed, journal diameter of bearing, oil viscosity can be lower, on the other hand, the oil viscosity is higher. For machine tool guideway, general work should be used under the condition of sliding guide rail machine oil for lubrication, oil viscosity should regard guideway load size, speed, horizontal or vertical, environment temperature. Horizontal guide should choose lan32 ~ lan68 viscosity of lubricating oil, and the vertical guide should choose lan46 ~ lanl00 viscosity lubricating oil. Bearing comfortable and durable, )