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In General, if used correctly bearing, you can use up to reach fatigue life. But there are accident prematurely damage, not in use. This early damage and fatigue life, known as the quality limits of breakdowns or accidents. Mostly due to lack of attention on the installation, use, lubricate, intrusion of foreign bodies from the outside, for study on thermal effect of axis, shell was insufficient.
On bearing failures, such as: roller bearing rings of ribs hurt, as a reason to consider, for oil lubricant inadequate, inappropriate, construction defects, intrusion of foreign bodies, spherical ball bearing misalignment, shaft deflection is too large, there will be these reasons coincide.
1. the sound of rolling bearing using acoustic logging on the size of the sound of rolling bearings in operation and sound checks, even has a slight peeling of the bearing damage, also is making an abnormal sound and irregular sound, using sound system to be able to tell. According to the self-aligning ball bearing load grease when you select, for heavy-load small grease should be selected for penetration. By lubricating oil circulating, you can take a lot of heat.
2. oscillation bearings for bearing vibration damage to the bearings are sensitive, for example, indentation cracks, wear, corrosion, spalling, are reflected in the bearing vibration measurement, therefore, through the use of special bearing vibration Measurer (frequency Analyzer, etc) measures the size of the vibration, through frequency not infer exceptions to the specific situation.
3. grease lubrication grease is made up of base oils, thickeners and additives for lubricants. In order to reduce the impact on the high speed shaft bearings must be three good lubrication, bearing bearings temperature, generally have the bearing outside of room temperature can be speculated, if using oil hole can directly measure the temperature self-aligning ball bearing outer ring, is more appropriate.
4. Select when grease is selected according to the operating temperature of the grease, key indicators should be dropping point, oxidation stability and low temperature performance, high temperature drop point usually used to evaluate performance, bearing the actual temperature should be below the drop point ℃ 10-20. One detachable flat washer retaining ring, or portions therein as self-aligning ball bearing outer or inner ring of a rib when selected, is ideally suited for bearing should be selected using criteria moisturizing oil, due to the different trademarks, will also have a lot of differences in performance, so when choosing, you must be careful.
Therefore, only investigated damage, it is difficult to know the real causes of injury. However, if you know the bearing condition of used machinery, used, constructed around the bearings, understanding of the situation before and after the accident, combined with self-aligning ball bearings damage State and investigation for several reasons, they can prevent similar accidents happening again.
| Product Model | Inside Diameter | Outside Diameter | Thickness |
| 7315B NSK | 75 | 160 | 37 |
| 7315A NSK | 75 | 160 | 37 |