Bearing deep groove ball bearings should be turned into flexible block-free. If there is clearly turning the inflexible, it indicates that the axis dimensions are too large, tolerance to go down. SKF bearings are pressed into the shaft turn by hand after apparent "Salsa", the tolerances of the shaft may be too large or the roundness of the axis bad. So when the control shaft and housing tolerances to control the roundness, many domestic manufacturers currently control the tolerance, not to control the roundness.
Because of deep groove ball bearings are high-precision products, such as improper Assembly can easily cause damage to the bearing Raceway, leading to deep groove ball bearings are damaged. During Assembly of the bearing should be dedicated mold, able to beat, only small forces when pressed into the shaft, pressure ring only ring stress. Assembly requires a pneumatic or hydraulic, in press-fit upper and lower required levels, such as the tilt causes the Raceway of deep groove ball bearings due to mechanical damage and deep groove ball bearing Guide.
1. the bearing temperature rises should happen:
When the rising temperature deep groove ball bearings, first determine whether misuse, as did rise, should be dealt with as follows:
(1). check oil oil level is normal, if normal, check that the tank Vent valve is closed. If you have tight, oil to be filled, if sealant gasket seepage, should be shut down.
(2). take oil samples observed oil color changes, and for tests to see if bad. If confirmed when the deterioration, downtime should be replaced with new oil.
(3). check whether there are abnormal sound of deep groove ball bearings, and testing swing of FAG bearings for exceptions.
(4.) should check the hydraulic speed Governor, if oil pressure may lead to cooling water of hydraulic valve is closed.
(5). check cooling water pressure, the water and piping systems are functioning correctly. If the water pressure is likely to be clogging of the filter cannot be processed in a timely manner, can shut down, when the confirmation work, again put into use.
2. first of all we have to look at the causes of elevated temperature deep groove ball bearings:
(1.) may be a deep groove ball bearing oil quality deterioration, deterioration of the oil in the oil itself is not clean or run, such as increased moisture in the oil can cause increased the acidity of oil, will reduce oil lubrication, bearings subjected to corrosion, resulting in bearing temperature.
(2). probably because NSK bearings caused by the disruption of cooling water.