Several measures to avoid NTN self-aligning roller bearing corrosion and smooth way

NTN bearing corrosion reason of various internal and external factors, provoked by the boil down to basically have: 1, the bearing metal surface brightness level ( The oxygen concentration cell corrosion) 。 2 chemical composition and structure, bearing metal material itself. 3, bearing metal exterior contact solution composition and pH value; 4, bearing using the environment temperature and humidity. 5, bearing metal appearance in contact all environmental media. 6, the pH value of 5 ~ 6 sweat it. So, in order to avoid hand sweat provoking corrosion, equipment and consumption personnel should wear gloves, don't contact with the hand spherical roller bearings. Using the NTN bearing, smooth and fat is critical. Using the smooth transformation of fat, not only don't effect, also can damage the bearing. 1 oil flow check method, took two cups, one need to be checked out the smooth oil, another empty on the desktop, separate the cups with smooth oil for high 30 - desktop 40 cm and tilt, make smooth oil flow gradually to the empty cup, to examine its activity, good quality and smooth oil when the oil flow should be a slender, on average, from time to time, a series of if present oil flow fast and slow, and sometimes has a large flow, says smooth oil has turned. 2, hand twist will smooth oil lay between his thumb and his finger repeat grinding, good smoothness smooth oil hand feel, less abrasive dust, no friction, if feel fingers between the larger friction feeling such as sand, smooth oil indicates the impurity, should change new smooth oil. 3, illumination method in a clear day, lifted with screwdriver will smooth oil, and the degree of surface into a 45 degree Angle. Against sunlight, check the oil situation, under the light, can be clearly seen smooth oil without chip is good, can continue to use, if excessive wear debris, smooth oil should be changed. 4, oil droplets in a clean white filter paper, number of oil drops on the filter paper, after being smooth oil leakage, if there is black powder appearance, touch resistance acerbity feeling, the clear smooth oil inside has a lot of impurity, good smooth oil powder, with the hand feels dry and lubrication, and yellow.