2013年8月9日星期五

Causing deep groove ball bearing temperature causes and countermeasures

Typically, if used correctly deep groove ball bearings, can be used to its maximum life so far. If not used correctly will have an unexpected injury prematurely. And fatigue life of this relatively early damage, malfunction or accident we call quality use limit. Multiple causes for installation, use, lubrication on the non-standard, or other foreign matter from outside intrusion.

Deep groove ball bearing damage on the state, such as: bearing rings, ribs card injury, mainly due to lack of lubricant, not suitable for oil discharge structure defects, the intrusion of foreign bodies, bearing misalignment, shaft deflections is too large, or both the above reasons.
Therefore, only the investigation bearing damage, injury is difficult to know the real reason. However, if you know the bearing using mechanical, conditions of use, bearing the surrounding structure, to understand the situation before and after the accident, combined with state of the bearing damage, and several reasons, we can prevent similar incidents from recurring.
deep groove ball bearing vibration of the bearing damage is very sensitive, such as peeling, dents, rust, cracks, wear, etc. will be in rolling bearing vibration measurement reflected, therefore, through the use of special bearing vibration measurements (frequency analyzer, etc.) can be measure the size of the vibration, can not be inferred by the frequency of abnormal circumstances. The measured values ​​due to the conditions of use of rolling bearings or sensor installation location is different, so each machine needs prior to analysis and comparison of the measured values ​​determined criteria.
Deep groove ball bearing temperature, generally room temperature outside of the bearing can be inferred, it can be measured directly using the hole bearing outer ring temperature, which is more accurately measured.
Typically, the temperature of rolling bearing operation began to rise slowly as 1-2 hours after reaching steady state. The normal temperature because of the machine bearing the heat capacity, heat capacity, speed and load are different. If lubrication, improper installation, the bearing temperatures will soar, there will be high, then you must stop running, check the disassembly repair. Conditional thermal sensor can be used at any time to monitor the bearing operating temperature, and to achieve the temperature exceeds a predetermined value or when the alarm automatically stops running to prevent burning shaft accidents.

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