Institutional operation, install the FAG bearing parts allows a certain temperature, when the hand touch body shell, should not feel hot to normal, instead it indicates that the bearing temperature is too high.
Causes of bearing temperature are: lubricating oil quality does not meet the requirements or deterioration, lubricating oil viscosity is too high; preloaded mechanism (spaces); planar preloaded bearing; bearing race rotation on the shaft or shell; overload; bearing retainer or rolling element fragments.
FAG lubrication bearing is allowed in the work of the minor operation noise, if the sound is too large or unusual noise or sound, it indicates that the bearing failure.
Causes noise rolling bearings are more complex, one is the bearings, the mating surface wear. Because this kind of wear, damage the bearing shells, bearing and shaft, causes the axis deviates from the correct location, the shaft noise in high speed motion. When the bearing fatigue, its surface metal flake, also bearing radial clearance increases the noise. In addition, insufficient lubrication of the bearing, the formation of dry friction, as well as bearing broken produces abnormal sound. After bearing wear loose, loose cage damage, also can produce abnormal sound.
(1) bearing low noise level
In China the production of standard bearings, ball bearings from the inner diameter of 2.5mm to φ 60mm have several varieties with Zl, Z2 and Z3 three kinds of suffixes, corresponding to the three kinds of low noise of different requirements, and roller bearings from type N309 to type N322 eight models are made according to the low noise standard varieties
These FAG lubricating bearings can apply to the other requirements of the low-noise machines, and the price is cheap, such as on the type and size to meet the requirements, as far as possible the use of these two types of low noise bearing.
(2) the bearing noise is relatively small.
When low noise bearings can not be using the above two types of bearing noise, can use relatively small. Comparison on the basis of the specific as follows:
1) the noise of the ball bearings than roller bearing low, relative bearing sliding less noise than the (friction) bearing the relative sliding more low;
2) noise using solid cage bearing relatively than the use of stamping FAG lubrication bearing frame is low; noise using plastic retainer bearing than using the above two kinds of cages of bearings are low; cones, the outer ring thickness, noise is small,
3) bearing precision is high, especially FAG bearing rolling body is of high precision with low noise, the noise than the relatively small precision bearings,
4) low noise bearing noise bearing less than.