Motor a quality inspection of friends and I talked about one thing, different motor have 5 sets of the same specification while viewing the bearing in motor appears fever, teardown check found all inner ring crack; This several sets of bearing is not the same manufacturer of the goods, not bearing material is wrong? A quality inspection of friends and I talked about one thing, different motor have 5 sets of the same specification while viewing the bearing in motor appears fever, teardown check found all inner ring crack; This several sets of bearing is not the same manufacturer of the goods, not bearing material is wrong? According to the understanding situation, suggest the friend to see, and bearing the relevant parts of size view to his surprise, the result of the occurred because the shaft hole inside of bearing inner cover end face and the result of the friction of the bearing inner ring directly. Combining with practical examples, let's talk about bearing heating problem. Motor bearing heat damage to the motor motor although seemingly are short in the structure, but its also very easy to form a serious loss in mechanical fault, in the motor of the structure of the mechanical problem, the most easy to attack problems is motor bearing fault, during which most of all because of motor bearing heating caused trouble. Once the motor bearing attack of fever, caused by light motor dissolves grease overflow, or will cause burning, grease and led directly to the motor bearings burned down. Maintenance of motor bearing is one of the important contents of the overall maintenance of motor protection, as well as the most important type of motor maintenance together. Whether to choose what kind of bearing of the motor, the bearing damage once the attack, there may lead to motor are swept rotor chamber, through uninterrupted work of the motor, and then cause the insulation of the motor coil burned down. Together for bearing fever caused by the leakage of lubricating oil, while the motor can work normally, but the leaking oil is highly may dip on the motor coil, lead to accumulation of dust and other debris and coil, and the motor insulation. Motor bearing heat cause analysis 1 motor bearing and bearing cover conflict with each other to form the problem the main reason is the motor in the process of bearing cover of no shortage of processing scratches may be present in the device conflict, lead to motor bearing rotating part of the present conflict phenomenon. If the bearing heats are mild conflict, but does not smoke, open TV cover view traces will find conflicts in black. If because eccentric circle inside the motor bearing cover, scratches, when perhaps device will cause severe motor bearing conflict, emit smoke together. 2 the general electric motor bearing oiling method problem in order to avoid the oil too much as well as convenience, are generally on the outer edge of the bearing refueling operations, if working motor moments don't have to meet the length of time, it is difficult for lubricating oil distribution to the interior of the bearing. For the high speed work may be a large motor, often because of the reasons lead to motor bearing heating. 3 motor bearing damage motor bearing steel ball is not round damage may be split up, after through the inspection didn't pass the strict check again, and in the process of device without device waterproof coil motor bearing outer ring corrosion caused by rupture, can cause loss of motor bearing attack conflict occur fever phenomenon. 4 motor belt tight coupling device might not standard belt too tight and its coupling device inequality can cause motor bearing because of the added load and make the bearing temperature rise sharply, in the working process of the motor, if discover the motor not fever when idle, and under the condition of loading fever very much, is you must check whether the belt is too tight and the coupling of the motor. 5 motor bearing assembly wrong with one of the most common wrong such as motor bearing device, in the process of bearing cold pack not uniform on inner ring of bearing wear, led to the cooperation between the motor bearing inner ring and bearing lost the original interference amount may be to reduce the interference, rendering the inner ring of the phenomenon; In the process of motor cover end device, not on the cover end bearing chamber caused by uniform on cooperation with the bearing outer ring too loose, then presents the bearing outer ring phenomenon. 6 motor bearing inside there is foreign body or grease impurities such as bearing retainer within small rigid material, cause in the process of motor bearing raceway damage and make the temperature rise, lead to motor bearing. 7 motor bearing itself has some quality problems such as rust race, clearance overruns, cage deformation and rotational insensitive, etc.
