Product category:
Lubricants
News Release from: Kluber Lubrication GB | Subject: Kluberlectric B42-72
Edited by the Engineeringtalk Editorial
Team on 04 July 2002
Conductive grease cuts arcs from
bearings
A novel electrically conductive grease can eliminate costly machine failure by prevention of electrical erosion bearing damage.
Under certain application conditions an electrical current may pass directly through a bearing during its passage to earth Electrical current transfer of this nature can invoke potentially catastrophic damage to rolling bearing contact surfaces
This article was originally published on Engineeringtalk on 10 Apr 2008 at 8.00am (UK)
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Electrical erosion is a relatively common occurrence with bearings operating in electric motors, railway traction motors, electrical generators as well as bearings in industrial process equipment where a static electrical charge may inadvertently be generated.
Conventional lubricating greases behave largely as electrical insulators rather than electrical conductors within the bearing offering resistance to the transfer of electrical energy.
Irregular electrical transfer however does occur resulting in the development of spasmodic electrical arcing across the bearing hertzian contact points.
Molten craters are formed at these points resulting in the development of the classical "washboard" line markings clearly seen.
Such electrical erosion damage can be prevented by insulation of the bearing using Kluberlectric B42-72, a tribologically engineered electrically conductive special grease.
This "optimised" grease formulation has an exceptionally low electrical resistance.
This leads to efficient electrical transfer, and hence to damage-free electrical discharge through the bearing.
Kluberlectric B42-72 can eliminate costly machine failure by prevention of electrical erosion bearing damage. Request a free brochure from Kluber Lubrication GB ...
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