TIMKEN bearing preload inspection method

TIMKEN bearings, in most cases, the working status: use proper clearance. According to different purposes, and in the bearing, bearing in advance, make the internal stress, makes the negative bearing clearance is used, this method is called using preloading. More appropriate, such as the angular contact ball bearing, tapered roller bearings, two families use bearing, bearing clearance, can be adjusted. 1 the main purpose of the preload: the main purpose of the preload, would it be possible for some typical examples, the examples to prove: ( 1) In the right direction and the radial position of the axial direction of the decision of the shaft, inhibit beating axis. ( 2) Increase the bearing rigidity. Machine tool spindle bearings, ride a bike with small agent bearing gear differential. ( 3) To prevent the vibration of the different sounds and axial direction of the resonance. A small motor bearings. ( 4) Inhibition of rolling rotary sliding, sliding and rotating revolution slides. High speed rotation center of the thrust bearing, thrust ball bearings. ( 5) , ring, keep the position of the scroll right. Thrust ball bearing, spherical roller thrust bearing, and the horizontal axis. 2 preloading method: in the early period of the load is positioning the TIMKEN bearing shaft relative position, in use will not change the preload method. An example: (below 1) In order to implement the width or bearing axial clearance between preload after tighten before the adjustment method of difference. ( 2) Adjust the size of the mat, gaskets, bearing preload, to give way. ( 3) Tighten the screw axis can be adjusted, nut after clearance, adopted by the method. In this case, with proper preload, to determine the start hand side friction torque adjustment. The so-called pressure constant is the use of helical spring pretightening, disc spring, give appropriate preparation method of the bearing. When use, even change the relative position of TIMKEN bearing, loading method in advance. When used, it will even the change of relative position, preload can maintain. Use after xie used engine oil, engine oil lubrication bearing if possible, should be impregnated with fresh oil and let the machine in low speed rotation for a few minutes. As far as possible make the oil collecting residual pollutants, and then purging in addition to the oil. Note: the oil before use it's best to filter it. And the use of grease lubrication bearing in replacing grease, Joe used in addition to the device should be avoided with any part of the cotton material come into contact with the bearing. Because these residues fiber may wedged in between the scroll and damage, especially the application of small bearing more need to pay attention to this problem. Check the TIMKEN bearings, don't let bearing exposure to pollutants or moisture environment. If the job is interrupted, should with oil or similar materials cover paper plastic film machine.