Transmission bearing failure analysis

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The fault phenomena bearing on the transmission: transmission gear meshing sound, bearing operating sound too much noise; issue dry grinding crash and not the normal sound transmission.
Reasons:
(For example, before the first shaft bearing rol ling bearings lack of oil), round steel ball mill loss raceway pitting, delamination, scars, inside and outside the raceway rotating shaft or housing or the bearing clearance is too large. Remedy: Supplemental oil, replace the damaged bearing;
Such as of gear machining precision or heat treatment process properly cause the yawing or tooth gear changes. Remedy: replace the damaged gear;
Backlash is too large or splined with the gap is too big. Remedy: Replace damaged synchronizer hub and shaft;
Repair the tooth surface is no glitch, raised trim. Remedy: repair the tooth surface;
The tooth surface spalling, delamination, defect, excessive wear or even for parts repair gear unpaired replace. Remedy: replace the damaged gear;angular ball bearings
First shaft, the second shaft bending deformation. Remedy: axis replacement deformation;
Center distance of the two-hole the shell be aring bore Boring casement repair, a change so that the two axes are not parallel. Remedy: replacement of damaged housing;
After unilateral right by the the fork bend after repair or fork wear the surfacing thick, resulting in the related gear position is not allowed. Remedy: Replace the fork;
Second axis tighten the nut loose or other shaft axial positioning inaccurate. Remedy: reassembled;
Self-locking device groove, the worn off or even self-locking spring fatigue and break, causing the hanging file offside. Remedy: replace the fork shaft, steel ball or spring;
Individual tooth fracture. Remedy: replace the damaged gear;
Lack of gear oil deterioration, the specifications do not meet the requirements or oil debris. Remedy: supplement or replacement to meet the requirements of the oil.
1. Bearings bear the load capacity is much smaller than the same volume of the sliding bearing, therefore, the radial dimension of the bearing. Withstand large l oads of occasions and requirements of small radial size of the structural requirements for compact occasion <such as an internal combustion engine crankshaft bearing), the use of plain bearings;
2. Larger bearing vibration and noise, especially in the late particularly significant, demanding of precision not Xu Youzhen moving occasion, bearing, difficult competent, generally used in the effect of the sliding bearings better
3. The bearings are particularly sensitive to metal shavings and other foreign matter enters the foreign body, bearing greater vibration and noise occurs intermittently will cause early damage. In addition, the bearing metal clip impurities, etc. also prone the possibility of early damage. Even without the early damage, bearing life there are certain limits. In short bearing life than plain bearings shorter.bearing suppliers
However, the bearing and the sliding bearing com parison with advantages and disadvantages, each occupy a certain applicable occasions, therefore, the two can not be completely replaced by each other, However, because of the outstanding advantages of the bearing, the bearing has evolved as the main support of the machine type, The application is more and more widely.