ntn aligning ball bearing installation failure detection method

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ntn bearings after the end of the installation, in order to check whether the installation is correct, operated check. Small machinery can be rotated by hand to confirm whether or not to rotate smoothly. Nick, indentation inspection items dysfunctional due to poor i nstallation, poor mount processing the torque generated by instability, the clearance is too small, the installation error, excessive seal friction torque and so on. If no abnormal power operation can begin.thrust bearing
Power operation, from the no-load low speed, slowly increased to the rated operation of the conditions set forth. Test run to check matters, whether there is abnormal sound, changes in the temperature of the self-aligning ball bearing, lubricant leakage or discoloration. If abnormal, should immediately suspend the operation, inspection machinery necessary to remove the bearing checking.
1, low noise ntn bearing installation and adjustment can also follow the example of the grouping method of long-life bearings, making more consistent with the interference size, bearing clearance is also more consistent, and I hope that with the interference to the extent possible to take a smal ler value in order to ensure the bearing raceways of deformation is small, thereby rolling the body caused by noise becomes small.
2 clearance noise, the ideal state ntn bearing is running the highest temperature state, the clearance value is exactly zero. Judgment clearance is too large: still state-aligning ball bearing axial displacement, its reciprocating amplitude, issued in the operation a large Zhongzhuo noise.
The running issue annoying shrill howling, then the ntn bearing preload is too large, bearing larger preloaded, should be slightly relaxed pretension degree of. If the clearance is too large, so that the two bearing rings axially slightly relative deviation: reduced clearance, but also increases the axial rigidity bearing noise can be reduced.
Rolling element will slip into the no-load zone or around a rocky ledge, so not only will increase the noise can also cause wear small clearance and axial stiffness to eliminate this phenomenon. But clearan ce can not be too small, in order to avoid overheating and shortened life expectancy.bearing corp
5, sometimes due to the very large operating temperature range of the host, or the shaft and bearing bore size discrete, can not time the set to get the appropriate clearance aligning ball bearing outer ring, in this case, can be reversed elastic constant pressure preload method.
ntn bearings and shaft are popular joint venture for the transition of the joint venture, the seat bearing holes JV popular the gap joint venture. Two-way bearing bottom bracket circle should be fixed on the shaft, in order to avoid the associated axis migration shift. The bearing device approach, popular situation changes the status of the axis majority, and thus the inner ring and the shaft of the joint venture is to win the joint venture, the joint venture of the bearing outer ring and bearing chamber gap joint venture.
Device bea ring the first dial gauge fixed on the end surface of the tank shell, touch the top of the head of the table in the bearing shaft washer migration shift bearing raceway on top edge migration shift while viewing the dial gauge pointer, if the pointer deflection clarify axis circle and the axis is not perpendicular to the center line of. Tank shell hole deeper lengthened the dial gauge head can also be used to hone. This is a good way to hone shaft ring, and the vertical axis of the middle line degree. Bearing device installed anti more than ntn bearing is not working properly, and each of the joint surface would be subjected to severe wear. Shaft ring and seat and the difference is not obvious, the assembly should be presumptuous special beware can not be presented to hold against. The device precisely the time division should be the seat can take the initiative to adapt to the the scroll rolling, rolling element is located in the upper and lower ring raceway. In addition, th e seat of aligning ball bearings and the bearing hole should leave a gap of 0.2-0.5mm to the compensation parts processing device imprecise constitute error when running in the middle of the bearing rings partial shift, this gap can ensure that its initiative to adjust, avoid touching the friction to its normal operation. Otherwise, it will cause the bearings to severe damage.ball thrust bearing