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NTN thrust ball bearing application environments of different smooth the way care on a regular basis

by:Waxing     2020-11-12
NTN bearing smooth preferably during the plan of equipment downtime, and periodically stop supplement, at the same time, the old oil clean up or empty through the drain the old oil. Before attend the novel grease injection nozzle should be wiped clean. If the bearing box of thrust ball bearing no injection nozzle, or end cover should be opened the bearing box cover, in order to remove the old oil, after the liquidation, novel complement the same type of grease. In order to guarantee the normal operation of NTN bearing, we need check the oil level of smooth oil and oily, normal conditions, the normal oil level should be equipment oil level Windows or mark a third - Two-thirds of the range. Oil compensating way for oil cup, the oil level appeared only represent to fill oil, and oil bearing box is to satisfy the request of operation, oil cup CPC a lower than a quarter of its total volume can be thought to fill oil. 1, smooth high-speed bearing grease is at low temperature, the use of thrust ball bearing equipment increasingly motors, force bearing used in smooth fat must has the following properties: ( 1) Have the same operation and bearing life, try to prolong the maintenance cycle, shorten downtime, progress of labor consumption rate. ( 2) Under the high speed of dn> 5 x 105 to ensure that the motor temperature rise is low, not dump oil, thus reducing power consumption, maintenance of motor. ( 3) The impurity content control under a certain specification, the earth can reduce noise pollution to the environment. ( 4) In turn guarantees bearing under working conditions of start-up and operation sensitivity, ensure that the output power is minimal. 2, general smooth low noise motor bearing grease in NTN bearing industry, this kind of smooth and fat are the biggest, accounts for about 70% of the total in fat mass. Because this kind of smooth fat choose soft, easy to filter the fiber of lithium soap thickeners, used oil, mineral oil for foundation is very easy to satisfy the low-standard thrust ball bearing vibration value of the request. Another advantage is good pumping, whether mechanical fatliquoring, or manual besmear fat, are cumbersome and feasible. 3, high temperature short-lived life low noise bearing grease under the environment of high temperature and high speed smooth smooth use of grease should have the following features: ( 1) Don't loss at high temperatures, namely at about 180 ℃ temperature adhere to certain consistency, not soften. ( 2) Less oil leakage. When smooth grease in the bearing to accept high frequency repeated shear and great centripetal force, the smooth and timely back into the race is not thrown out. ( 3) Has a certain effect of quiet, smooth fat due to the high temperature fiber average hardness is larger, so the thrust ball bearing noise test of mute performance than a smooth lithium base grease. ( 4) This kind of smooth grease to use life has a certain temperature, it has good resistance to oxidation at high temperatures to, so as to prolong the life of NTN bearings and related equipment. Use of oil bath type of smooth system, if the oil temperature at 60 ℃ ( 140°F) The following, and smooth oil does not contaminated, smooth oil change once a year. If the oil temperature in 60 100℃( 140 - 210°F) , it needs a change in a year four times smooth oil. If the oil temperature in the 100 - 120℃( 210 - 250°F) , the smooth oil demand change once a month. If the oil temperature at 120 ℃ ( 250°F) Above, demand a change in smooth oil once a week. The right equipment and care is important for normal operation of the NTN bearing elements, at the same time, must pay attention to adhere to the purity of the thrust ball bearing. Bearing necessary to avoid contamination by pollutants and moisture, must have the correct device and smooth. In addition, the design of the bearing arrangement, oil seal, smooth the way and change cycle and specially the same care plays an important role, is necessary to pay attention.
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