Precision bearings are fundamentally a combination of geometric shapes rotating and spinning. The geometry of these bearings helps us analyze failures.
Precision bearing fault frequencies are calculated from the geometric size of the bearing parts – a concept referred to as bearing kinematics.
This tool analyzes:
- The condition of your bearing & if issues are elsewhere in your system
- Outer raceway damage
- Inner raceway damage
- Ball damage
- Cage damage
- Bearing contamination
DISCLAIMER: The data provided on this page is for general information purposes only. While the intention is to provide accurate information, the calculations performed by these tools/calculators are mathematical estimates only and errors may exist in the supplied information. There is no warranty or guarantee, expressed or implied, regarding the accuracy of this information or its applicability to your engineering situation. Please consult your engineer or engineering consultant before making any technical decisions.
Precision Bearing Analysis Thoughts
Failure analysis, even at solely the frequency level, can be called an art form. Much experience can be brought into a thorough precision bearing system analysis. It’s good to know that more often than not the frequencies do not perfectly align. This can happen for a multitude of reasons including the accuracy of various tools involved. For this reason, frequency spikes very close to those provided in the above tool may still be from the precision bearing(s). This is where analysis experience can be priceless.
Also, be aware of frequency spikes that are at RPM or at a harmonic of the RPM the unit is running at. This could be from an imbalance, out of roundness, out of concentric housing, tool noise, etc. There are times when a frequency analysis is quick and easy; be thankful for these times! In these instances and the much more difficult instances, be quick to contact GMN USA engineers for support. Precision bearing failure analysis can be much smoother and faster with years of experience on your side.
Note that precision bearing fault frequencies are derived from industry accepted calculations. If there are any questions on the methods used, please contact GMN USA engineers for support. Formulas are also outlined in the GMN Precision Bearing Catalog on page 92.