FAG bearing failure occurs during operation is often the case, so don′t make a fuss. There have been failures, judgment and treatment is the key. Today we will explain the common faults and troubleshooting method of FAG bearings. Needle roller bearing overheating causes are: lubricants quality does not meet the requirements, or degenerate, lubricant viscosity too high body assembled too tight (lack of clearance), bearing too tight; bearing washer on the shaft or in the rotation; load too large; or rolling bearing cage fragmentation.
Led axis deviation from the correct location, abnormal sound when the axis at high speed. When bearings are tired, its surface metal flake, also makes the FAG bearing radial clearance increases the noise. In addition, the needle roller bearings with insufficient lubrication, the formation of dry friction, as well as the bearing crush generates abnormal noise. After bearing wear loose, loose cage damage, will also have an abnormal noise bearing failures.
1. bearing manufacturing about of noise: here including maintained frame noise and vibrato, maintained frame noise main occurred in ball bearing and FAG bearing in the, dang bearing rotating Shi due to maintained frame of vibration and maintained frame and scroll body occurred impact will issued sound. this sound has cyclical. vibrato (various bearing) is has must frequency of sound, is due to roll road surface Shang has larger of corrugated degrees caused of vibration and produced of. This phenomenon is the most common problem, we will need lots of attention. In particular we are students who learn some knowledge of needle roller bearings, carefully look at these critical elements, it may be of some help to you.
2. using improper caused of noise: for various bearing are exists. Dang FAG bearing roll road surface or scroll body surface was touch injury, and pressure pit, and rust, then on will produced has must cycle of noise and vibration. Dang bearing in running in the has dust intrusion Shi on will produced dirt real noise. this noise is cyclical of, also also accompanied by vibration, its sound size does not fixed, Shi sometimes no.
3. inherent noise: roll road sound and various bearing and scroll friction sound is rolling bearing inherent of sound, roll road sound is by scroll body and roll road contact Shi of elastic characteristics produced of, dang FAG bearing rotating Shi, scroll body in roll road Shang scroll and issued of a continuous and sleek of sound; does not normal of scroll friction sound can issued "creak, and creak" like does not comfortable of metal friction exception sound, lubrication good Shi does not issued such of sound. so in general situation Xia not problem, only noise increases zhihou only needed attention.
FAG bearing raceways and rollers have uneven crater on the contact surface, notes bearing plastic deformation. The reason for this was a large static bearing load or shock loading, local stresses exceed the yield limit of material on the surface of the work, which generally occur in low-speed rotation of the needle roller bearing. Housing washer of cracks can be caused by overtightening of the FAG bearing, bearing foreign or inner ring is loose, inclusive deformation of the bearing, install the bearing surface of poor.
From the above analysis, now we all understand and know how by FAG bearing noise to deal with the problem. Final use of FAG bearings can be worry-free operation.