Be in usually, NSK bearing grease of the filling quantity is always more than directly involved in the actual requirements lubrication, the shelf and bearing guards empty cavity, and in the rolling around the in vitro form a contour. In the process, because the resistance of the redundant grease, bearing temperature rise soon.
Although most of the redundant grease in the early operation that extrusion, and squeezed in a groove accessories grease of may still be turning into the groove with roller in between. These in the early stages of the bearing, most of the grease soon (less than a minute) will roll out of the way, and piling up in the grease in as bearing drive the systemic circulation at the same time, have a small amount by eduction. Then bearing yavin degrees still continue to rise until the extra bearing greases expelled all so far, can be called the grease ZouGe stage, according to the structure of bearing grease filling quantity, quality and other factors, this time can last more than 10 minutes, and even a few hours.
The rest of the bearing grease is completely after discharge, and the rest of a few grease in rolling body, groove, maintains a mutual contact surface, JianPi cadastral formation is thin thin film grease, thus the normal phase into the bearings. Then the temperature gradually decline and achieve the balance state. That is, long-term lubrication, mainly rely on this layer to bear grease membrane. In addition, in the process of the long run bearing, rolling body and groove near the outline of the outline of and keep on the shelves of grease to atrophy and tell part of base oil, flow into the groove after between, the lubrication also to have certain supplementary role.
Different bearing grease in bearing formed in the outline of open to traffic is different, have to form outline is pretty is, ZouGe short time, in the long run bearing low temperature, and smoothly, it is an ideal grease, so for the grease into the sex is especially important.
Some so-called type vortex grease is different, is not easy to form outline, even if form outline also easy to collapse, then repeated back to roll tract of the redundant grease in the long run, be strong listed the status of the mixing, bearing great torque, high temperature, and don't balance, it is still possible to produce noise, grease and easy to metamorphism and loss.
NSK bearing temperature treatment
When bearing temperature, the first judge whether misoperation, such as do rise, should do the following treatment:
(1). Check the cooling water pressure, water flow and pipeline system is normal or not. If water down may be filter jams, cannot be handled in time, can stop processing, when confirmed that can work, and put into use.
(2). Should check the governor hydraulic, if hydraulic low may lead to cooling water hydraulic valve closed.
(3). Check whether bearing has the different sound, NSK bearings and detection bearing a degree are normal.
(4). Take fuel samples observation oil whether change color, and laboratory test to see if metamorphism. If confirmed degradation, should stop replace new oil.
(5). Check the oil standard oil case is normal or not, if abnormal, so check valve is vital to oil. If already matter, should fill oil, if is sealed plastic mat oil leakage, should stop processing.
When we use the NSK bearings in, if found its temperature is very high, is to stop the equipment operation, and then find out the reasons, and according to the above offer solutions to deal with, but may be the cause of the bearing heating is different, so the solution is different, so or to particular case is particular to treat, in under the help of the technical personnel to complete.
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