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Deep groove ball bearing damage when the approach
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| Time：2016.11.17 News Sources：Shandong Xinkaite bearing Co.,Ltd. Views：
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Deep groove ball bearing demolition inspection, according to high-precision deep groove ball bearing damage to determine the bearing failure and damage reasons.
1. Raceway surface metal flaking
Bearing rolling element and the inner and outer ring raceway surface are subject to periodic pulsating load of the role, resulting in cycle-changing contact stress. When the number of stress cycles reached a certain value, the rolling body or the inner and outer ring raceway on the work surface to produce fatigue spalling. If the high-precision deep groove ball bearings load is too large, will make this fatigue intensified. In addition, the bearing is not installed, the shaft bending, will also produce raceway peeling phenomenon.
Fatigue spalling of the bearing raceway reduces the operating accuracy of the shaft, causing vibration and noise in the mechanism.
2. Bearing burns
High-precision deep groove ball bearings burn their raceway, the rolling body on the tempering color. Burns are generally due to insufficient lubrication, lubricating oil quality does not meet the requirements or deterioration, and the bearing assembly is too tight and so on.
3. Plastic deformation
High-precision deep groove ball bearing raceway and roller contact surface uneven pits, indicating that the bearing plastic deformation. The reason is that high-precision deep groove ball bearings in a large static load or impact load, the work surface of the local stress exceeds the yield limit of the material, this situation generally occurs in low-speed rotating bearings.
4. Bearing race cracks The bearing race cracks may be due to high-precision deep groove ball bearings with too tight, high-precision deep groove ball bearings foreign or inner ring loose, the deformation of the bearing bearing parts, bearing the surface of the installation of poor processing .
5. Cage fragmentation
The reason is insufficient lubrication, rolling body broken, seat ring skew.
6. The metal of the cage is adhered to the rolling element
Possible reasons are the rolling bodies are jammed in the cage or insufficient lubrication.
7. Seat ring raceway is badly worn
May be falling into the foreign body within the seat, lubricating oil or lubricating oil grade is not appropriate.
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