Motors with stray current problems
Vulnerable to stray currents
In an electric motor, stray currents can cause cratering in the bearing raceways and in the rolling element surfaces. Variable speed drive motors with pulse width modulated frequency converters are particularly at risk.
Over time, damaging effects of stray bearing currents can include increased noise and heat levels, reduced effectiveness of the lubricant, excessive vibration and eventually, premature bearing failure.
Reduce your risks with SKF
Bearing insulation and optimization solutions from SKF can help OEMs and end-users guard against the effects of stray electric currents, reducing maintenance demands and total costs in the process.