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Rolling bearings: effective protection against electroerosion
Reading volume:415 Release time:2022-05-14 21:16:23
Innovative lubricant design ensures better conductivity
The
undesirable passage of an electric current and spontaneous discharge
can cause severe damage in electric motor rolling bearings. It is with a
view to these applications that Klüber Lubrication has developed the
new, electroconductive Klüberlectric BQ 72-72. Due to an innovative
lubricant design involving dissolved chemical additives, bearings run
smoothly and the grease's conductivity is considerably increased to
attain specific electrical resistance characteristics resembling those
of semiconductors. Furthermore, Klüberlectric BQ 72-72 reliably protects
bearings against wear, which contributes to longer maintenance
intervals and service lives.
"It
is in particular the increasing use of frequency converters for
continuous drive speed adjustment that leads to parasitic high-frequency
bearing currents, which may damage bearings and reduce their service
life considerably," explains Karl Dieter Schuster, Manager Application
Engineering at Klüber Lubrication. "Due to the electroconductive
additives contained, Klüberlectric BQ 72-72 enables the removal of
bearing currents at variable speeds and temperatures. This helps to
extend bearing life."
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