NSK bearing used in the process, it can be said that vibration and temperature effects on the bearing is very large, we first look at the effect of outward spherical bearing bearing vibration.
Shake on bearing failures can be said to be rather sensitive, peeling, indentation cracks, wear, corrosion, and so reflected in bearing vibration measurement. So, by using a special measuring bearing vibration (frequency Analyzer and other) measures the size of vibration, through frequency not infer exceptions to the specific situation. Measured value for spherical roller bearings use conditions or sensor installation location is different and therefore require prior to each machine after the analysis and comparison of measurement values determine the criteria.
Often indicates that the bearing is in exceptional conditions with high temperature. High temperatures may also be harmful to the bearing lubricant. Sometimes overheated bearings lubricant that can be attributed to the housing. If bearings are more than 125 ℃ temperature long-term continuous transfers reduce the bearing life. Cause of high temperature bearings including: inadequate or excessive lubrication lubrication, lubricant. Contains impurities, excessive load, insert bearing loss rings, insufficient clearances, and high-friction oil seals, and so on.
Continuity is necessary to monitor bearing temperature, whether measured or other important parts of the bearing itself. If operating conditions do not change case, any temperature change may mean that the failure has occurred.
NSK bearing early damage is caused by a wide range of sometimes causes may be integrated. If the spherical bearing selection is correct, install correctly in place, lubrication and lubricant selection is correct, keep maintenance and preventive measures, bearings are to work properly for a long time.
1. improper Assembly
Installation using brute force, is the main cause deformation. Installation is not in place, is the reason for the defect.
Recommendation: select the appropriate bearing installation tool or professional, installed using special instruments and detection.
2. the pollution damage
Pollution can also cause premature damage of NSK bearings, pollution refers to the presence of water, sand, metal shavings into the bearing. May lead to bearing rusted, worn face, scrapes and dents.
Recommendation: to check on a regular basis, to clean the bearings to be used; enhanced NSK bearing sealing device.
3. poor lubrication
Not timely equipment lubrication or lubricant; lubricants or lubricant is not filling in place; lubricants or lubricant improper selection; incorrect lubrication, and so on, resulting in NSK bearing deformation of component abrasion or severe.
Recommendation: choose the right lubricants or lubricant, using the correct lubrication of filling, regular replenishment of lubricant.
4. current and eccentric
Bearing rotation power may be causing the Groove, or nicks, spherical bearing is stationary, electric operation incorrect grounding can cause a minor burn, eccentric or overly heavy load operations may lead to repairing spalling geometric stress concentration, or surface.
Recommendations: in front of the external parts other than the spherical bearing weld by appropriate ground connection to reduce or avoid current through the bearing, precise machining NSK bearing seats and abutments.