Backstops are used extensively on pumps used in the primary and secondary cooling systems of power generating equipment.
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Noice and Maintance of One Way Needle Roller BearingHave Read 5709/12/2019
The metallurgical quality of unidirectional needle roller bearings has been the main factor affecting the early failure of unidirectional needle roller bearings. With the improvement of metallurgical technology (such as vacuum degassing of one-way needle roller bearing steel, etc.), the quality of raw materials is improved. The proportion of raw material quality factor in the failure analysis of one-way needle roller bearing has decreased significantly, but it is still one of the main factors affecting the failure of one-way needle roller bearing. Proper material selection is still a necessary factor in failure analysis of one-way needle roller bearing.
The main task of the one-way needle bearing failure analysis is based on a lot of background material, analysis data and failure forms, find out the main factors of one-way needle bearing failure, so that the improvement measures are put forward, lengthen spherical roller one-way needle roller bearing, avoid sudden one-way needle bearing early failure.
One-way needle roller bearing vibration on one-way needle bearing failure effect is very significant. For example: peeling, indentation, rust, crack and wear will be reflected in the one-way needle roller bearing vibration test so through the use of special one-way needle roller bearing vibration measurement device (frequency analyzer and vibration meter, etc.) can measure the size of the vibration through the frequency distribution can be concluded that the details of the abnormal vibration measured values due to the use of one-way needle bearing premise or sensor installation position and different therefore require prior to each machine measurement value judgment dimension after analysis and comparison.
At present, the use of fine one-way needle roller bearing equipment increasingly refined, to promote one-way needle roller bearing grease must have the following functions:
(1) no and one-way needle roller bearing the same operating life, as long as possible to delay the maintenance cycle, shorten the downtime, forward labor productivity.
(2) at the high speed of dn >, 5×105, the motor should be guaranteed with low temperature rise and no oil rejection, thus reducing power consumption and shielding the motor.
(3) its purity content control is under the necessary standard to minimize the pollution of equipment noise to the situation.
(4) under the premise of ultra-low temperature operation, ensure the intelligence of starting and running of one-way needle roller bearing, common problems of one-way needle roller bearing.
Guarantee minimum output power. Remove the deep groove ball one-way needle roller bearings, coarse cleaning and fine cleaning, respectively placed in the container, first put the metal mesh bottom, so that one-way needle roller bearings do not directly contact with the container dirt. When coarse cleaning, if the one-way needle roller bearing with dirt rotation, will damage the deep groove ball one-way needle roller bearing rolling surface, should be taken care of. In the crude cleaning oil, use a brush to remove the smooth grease, adhere to the material, roughly clean, into fine washing.