There is a fault in the operation of NTN bearing is often the case, so don't make a fuss. There is fault, judgment and treatment is the key. Today we will explain the common malfunctions and their elimination of bearing. Causes of needle roller bearing temperature is too high: quality does not meet the requirements or modification of lubricating oil, lubricating oil viscosity is too high; body fitted too tight (insufficient clearance), bearing Assembly too tight; bearing washer on the shaft or rotating; load too large; or rolling bearing cage fragmentation.
Lead to deviate from the correct position of an axis, axis at high speed when the abnormal sound. When you are bearing fatigue, its surface metal flake, also makes the NTN bearing radial clearance increases the noise. In addition, the needle roller bearing lubrication insufficient formation of dry friction, as well as the bearing crush will produce abnormal noise. Bearing wear loose after the exclusion, cage loose damage, also have a noise bearing damage.
First and bearing manufacturing about of noise: here including keep frame noise and vibrato, keep frame noise main occurs in ball bearing and NTN bearing in the, dang bearing rotating Shi due to keep frame of vibration and keep frame and scroll body occurs impact will issued sound. this sound has periodic. vibrato (various bearing) is has must frequency of sound, is due to roll road surface Shang has larger of corrugated of caused of vibration and produced of. This is the most common problem, we can only require lots of attention in the future. In particular, we are students who learn some knowledge of needle roller bearings, to carefully look at these key content above, may be there is some help to you.
Second using improper caused of noise: for various bearing are exists. Dang NTN bearing roll road surface or scroll body surface was touch injury, and pressure pit, and rust, so on will produced has must cycle of noise and vibration. Dang bearing in running in the has dust intrusion Shi on will produced pollution real noise. this noise is periodic of, also also with vibration, its sound size does not fixed, Shi sometimes no.
Third inherent noise: roll road sound and various bearing and scroll friction sound is bearing inherent of sound, roll road sound is by scroll body and roll road contact Shi of elastic characteristics produced of, dang NTN bearing rotating Shi, scroll body in roll road Shang scroll and issued of a continuous and smooth 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 so of sound. so in general situation Xia not problem, only noise increases zhihou only needed note.
NTN bearing raceways and rollers uniform does not appear on the contact surface of the pits, notes bearing plastic deformation. Due to bearings under static and impact loads or loads of great, local stress exceeds the material's yield limit of the working surface, which generally occur in low speed rotation of the needle roller bearing. Crack may be caused by bearing seat is NTN bearings tie too tight, foreign or inner ring of the bearing is loose, inclusive of deformation of the bearing, install the bearing surface, such as bad.
By the above analysis, we now understand and know how to needle roller bearing noise problem. Last May the NTN bearings you use can be worry-free operation.



Other News:
By NTN bearings noise analysis during operation fault
Public institutions to see the City: The steel prices within a narrow range runn
IKO pole end knuckle bearing 1 PHS3
How best to extend the NTN roller bearing service life
In May the data “two happy four sorrows” in June seeks the support
SKF bearings for vibrating screen removal method
Determine whether NSK imported bearing conditions need to be replaced
Jamaican Drug Lord Christopher 'Dudus' Coke Gets 23 Years