Imported bearings after installation, in order to check whether the installation is correct, to the examination of the operation, small mechanical rotate confirm whether can use the hand well. Check project has caused by foreign bodies,
scar, indentation and seized up, bad for installation and the installation seat processing bad and the imbalance of the rotating torque, the seal clearance is too small, the installation error caused by friction torque, etc. If there is
no abnormal can start power operation.
Because of heavy machinery can't manual rotation, so the no-load start immediately after turn off the power, to inertia, check whether there is presence of vibration, noise, rotating parts contact, etc., confirmed that operate without
exception into power.
Dynamic operation, from the beginning of the no-load speed, rated operation conditions to slowly. Test run to check the items,Bearings Outer Diameter whether there is abnormal sound, leakage of the transfer of bearing temperature, lubricant and discoloration,
and so on. In test run if discovery is unusual, should stop immediately, check the machine, it is necessary to unload bearing inspection.
Imported bearing temperature check general appearance supposedly from housing. But using the oil hole, direct measurement of bearing outer ring temperature, more accurate. Bearing temperature began to rise, without exception, usually
stable after 1 ~ 2 hours. If because of the bearing or install such bad, bearing temperature will rise sharply, abnormal high temperature. The reason such as lubricant, bearing clearance is too small, too much bad installation, excessive
friction sealing device, etc. High-speed rotation, bearing the lubrication methods selection error is also the reason.
Rigid bearing, such as deep groove ball bearings (see deep groove ball bearing type) and the cylindrical roller bearing, can't bear any Angle error, or can only carry a very slight Angle error, but will get extra load. Since the self-
aligning bearings, such as automatic self-aligning ball bearing, spherical roller bearings, bearings and spherical roller thrust bearing, etc., can bear the load under the action of the Angle error, because of the compensation for
processing or installation errors caused by the initial error. Allow the Angle error can be found in the corresponding products introduction.
With adjustable seat ring of thrust ball bearing and self-aligning washers, Y - bearing units and self-aligning roller bearing can compensate for processing or installation errors caused by the initial error.
Bearing failure for many reasons, all the influence factors of design and manufacturing process will be associated with the failure of bearing, the analysis is not easy to judge. In general, generally can be used from the two aspects of
factors and internal factors considered and analyzed.
Use factors mainly refers to install, use, maintenance, maintenance, repair and so on meets the technical requirements. Installation conditions is one of the primary factor of use factor, bearing is often caused by improper installation
of a complete set of change the stress of bearing between various parts, bearing in the abnormal state run and early failure. According to the bearing installation, use, maintenance, maintenance of technical requirements, the operation
of the bearing on the load, speed, temperature, vibration, noise and lubrication condition monitoring and inspection, found that abnormal immediately to find the reason, adjustment, so that it is back to normal. In addition, analyze the
grease and the surrounding medium, the atmosphere quality inspection is also very important.