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NSK bearing temperature, generally NSK bearing outside of room temperature can be speculated that, if the uses of oil hole can directly measure the temperature of the bearing outer ring of the NSK, the more appropriate.
Usually, the NSK temperature of the bearing with bearing running slowly rising, reach a steady state after 1-2 hours. The normal temperature of NSK bearing due to the heat capacity, the machine heat dissipating capacity, speed and load and different. If the lubrication, install suitable, NSK bearing temperature will rise rapidly, there will be abnormal high temperature, then we must stop, take the necessary preventive measures.
The use of thermal exchanger can NSK bearing temperature monitoring at any time, and when the temperature exceeds the specified value alarm or stop to prevent burning shaft accident.
High temperature often NSK bearings in an abnormal situation. High temperatures may also be harmful to the bearing lubricant NSK. Sometimes the NSK bearings overheating can be attributed to the bearing lubricant. If the bearing at the temperature higher than 125 DEG C long-term even would reduce the NSK bearing life. Including the NSK bearings: high temperature caused by insufficient or excessive lubrication lubrication, lubricant. Contains impurities, heavy load, NSK bearing damage, lack of space, and oil have high friction etc..
Therefore continuity NSK bearing temperature monitoring is necessary, whether measured NSK or other important parts of the bearing itself. If it is in operation under the same conditions, any temperature changes may have trouble.
Regular NSK bearing temperature can be measured with the help of the thermometer, such as digital thermometer can be accurately measured, NSK bearing temperature in C or Fahrenheit temperature display unit.
The importance of NSK bearings, means when it is damaged, will cause the equipment downtime, so this type of NSK bearings preferably should be equipped with a temperature detector.
Under normal circumstances, NSK bearings in the lubrication or relubrication after there will be natural temperature rises and the last one to two days.
Usually, the K operating temperature of the bearing is used in more than 150 ° is called high temperature NSK bearing, the chromium bearing steel in the temperature exceeds 150 °, its hardness will decline sharply, dimensional instability, the NSK bearing does not work. So for the operating temperature to NSK bearing 350 degrees under the conditions of work in 150 degrees, if the rings and rolling bodies still use ordinary high carbon chromium bearing steel manufacturing, it must be on the NSK bearing parts tempering special, in general should be higher than the operating temperature of 50 ° tempering. The NSK bearing steel after tempering treatment according to the above requirements, can be used in operating temperature. But because the tempering hardness decreased, NSK bearing life decreased. When the temperature is higher than 350 ° NSK bearing, it must use the NSK bearing steel high temperature manufacturing.
The following NSK bearing temperature corresponding remedial measures:
Institutional operation, installing NSK bearing parts to allow a certain temperature, when the hand touch body shell, should not feel hot to normal, and that NSK bearing temperature is too high.
And the cause of bearing high temperature NSK:
(1) the lubricating oil quality does not meet the requirements or deterioration, the oil viscosity is too high;
(2) assembly tight (spaces);
(3) NSK bearing assembly too tight;
(4) NSK bearing race rotation on the shaft or shell;
(5) the load is too large;
(6) NSK bearing cage or a rolling body fragmentation.