Discriminant bearing can use specification again

Preventive maintenance of equipment, operation and peripheral parts change was removed when bearing stop check, can successively discriminant condition of use or using again good from bad. Carefully investigated and recorded by tear open come down to the bearing and the appearance of the situation, in order to explore the remaining quantity of smooth agent and investigation, after sampling, to clean the bearing well. 'Second check the raceway surface, rolling surface and cooperate with the surface conditions and adhere to the wear conditions of with and without damage and abnormal conditions. Discriminant bearing can use again, to be thinking of the level of the bearing damage, the machine performance, importance, and operating conditions, such as inspection cycle resolution will come later. Test results, if discover bearing damage and abnormal condition, injury section for find out the reason, formulate countermeasures. In addition, the test results, there are some defects, if the bearing can't use, need to change the new bearing. 一个。 Inner and outer ring, rolling body, adhere to any of them have crack and present pieces. b。 Inner and outer ring, rolling body any one strip. c。 Raceway surface, guard, significant injury of roller. d。 Insist on plane badly worn or loose rivet fierce. e. Raceway surface, rust and roller has a scar. f。 Had a remarkable indentation rolling surface, rolling body and make a mark. g。 Inner ring diameter or outer diameter on the creep. h。 Hot color changing fierce. 我。 Smooth grease sealed bearing seal ring and dust cover damage to serious. Inspected and fault disposal of operation of the project in operation has a bearing rolling noise, vibration, temperature, smooth state, etc, the detailed situation is as follows: a, the rolling bearing noise using sound device to the size of the rolling sound and sound quality of bearing in operation to stop inspection, bearing even with slight stripping damage, also an exception and irregular, and with the sound of the measuring device can distinguish. Second, the bearing vibration of the bearing vibration is sensitive to bearing damage, such as peeling, indentation, rust, crack and wear will be reflected in the bearing vibration measurement, so, through the use of special bearing vibration zhangs gauge ( Frequency profiler, etc. ) Can measure the size of the vibration, through frequency points cannot deduce the abnormal condition in detail. Measured values of bearing or sensor installation position and different using conditions, and thus needs prior to each machine stop after certain discriminant analysis compare measurement value of specification. Third, the temperature of the bearing temperature of bearing, ordinary have a bearing on the surface of the outdoor temperature can fathom out, if used oil hole can directly measure temperature of bearing outer ring, is more appropriate. Usually, the temperature of the bearing with running start gradually rise, 1 - Two hours later to reach steady state. The normal temperature of bearing for machine heat capacity, heat dissipating capacity, rotational speed and load. If smooth, device is appropriate, bearing temperature will rise sharply, can present abnormal high temperature, then must stop and take the necessary precautions. Using thermal device can monitor the working temperature of bearing, and completes the temperature value beyond rules automatic alarm or stop to avoid burning shaft accident attack.