We recently came across a white paper by MachineDesign titled “How to Eliminate Early Bearing Failure Due to Electrical Arcing.” This topic is of special interest to us at CBR Bearing because we know the damage that can be caused to traditional steel bearings when they are subjected to electrical arcing. In the paper, the author states, “In variable frequency drives, stray shaft currents…occur as a result of the high-frequency switching operation of the IGBT (insulated gate bipolar … [Read more...]
Preventing Electrical Arching For Industrial Motors With Vfd - Ceramic Ball Bearings, Posts by Tag
Why Industrial Electric Motor Service Providers Should Consider Ceramic Hybrid Bearings
In our many years in the bearing manufacturing industry, we’ve come to find that certain habits among motor repair technicians die hard. Many who have always used steel ball bearings to repair motors are reluctant to try something else, such as ceramic hybrid ball bearings. We understand that new products and technologies seem to come and go almost on a daily basis, so making the switch to something you aren’t as familiar with can feel risky, but ceramic hybrid ball bearings are a tried and true … [Read more...]
How to Prevent Electrical Arcing in Motors with a VFD
If you own, operate, or provide maintenance for equipment with motors using a variable frequency drive (VFD), you likely are aware of the problem of electrical arcing. It’s not a new or uncommon problem. Electrical arcing occurs when the voltage level gets too high and causes an ongoing electric discharge, which can damage your equipment and eventually cause it to fail. In the December 2017 edition of Currents, the monthly publication for members of the Electrical Apparatus Service … [Read more...]
