Self-aligning ball bearing vibration factor analysis in the process of operation

Bearing vibrating screen is more difficult to control the main vibration source, because of the vibrating screen is to rely on a lot of exciting force to maintain work timken bearing limit speed and friction coefficient, so bearing by the radial force is very big, vibrating screen in the process of work, a lot of exciting force will cause the elastic vibration of bearing system. If bad lubrication, can produce large friction bearing temperature rise too high, thermal expansion is too large, the radial clearance is significantly reduced, exacerbating the friction, temperature rise further improved. Bearing locking methods of general can be divided into two kinds: 1. Enclosed screw bearing peg just put the extension in the inner ring fasten the screw on the local, can export bearing seat is fixed, peg screw with hex wrench can lock. Please select a size appropriate hex wrench. 2. With fair locking sleeve bearing fair locking sleeve has a concave self-aligning ball bearing vibration and temperature, the sunken place instead of blastholes in fair, in the inner ring of the bearing is a local for the fair. The fair first sleeve on the inner ring is defined, in the direction of the axis of rotation, hasten to turn the fair bearing sleeve know card so far, with hexagonal wrench tightly lock screw. Bearing and eccentric system consisting of a vibration system, can be regarded as a single degree of freedom system. Timken bearing drive shaft and driven shaft system resonance frequency of a certain value, if a certain vibration frequency and resonant frequency, the resonance occurs. In addition, due to the eccentricity is centrifugal force, so will produce bending vibration of material factors affecting the service life of bearing, if speed close to critical value, the resonant bending. From peeling, indentation, rust, crack and wear will be reflected in the bearing vibration measurement, bearing vibration damage of bearing is very sensitive, so, through the use of special bearing self-aligning ball bearing vibration measuring device ( Frequency analyzer, etc. ) Can measure the size of the vibration, through frequency points cannot deduce the abnormal situation. Due to the measured values of bearing or sensor installation position and different using conditions, thus requiring prior to each machine is analyzed by the measured value of the determined after judgment standard. As bearing even with slight stripping damage, also an exception and irregular, and therefore with the sound of the measuring device can distinguish, USES the sound device, bearing in operation to check the size of the rolling sound and quality, have the effect of prevention in advance. If using the oil hole can directly measure temperature of bearing outer ring, is more appropriate. In general, the temperature of the bearing, generally can be deduced according to the bearing on the surface of the outdoor temperature. If the appropriate lubrication, installation department, the temperature will rise sharply self-aligning ball bearing, appear unusually high temperature, must stop at this moment, take the necessary precautions. Usually, timken bearing temperature with operation began to slowly rise, 1 - After 2 hours to reach steady state. The normal temperature of bearing for machine heat capacity, heat dissipating capacity, rotational speed and load. When necessary, the use of thermal device can monitor the working temperature of bearing, and implement e. automatic alarm when the temperature is more than the household or stop to prevent the shaft accidents.