SECTION 1 -INTRODUCTION TO BRUSHES AND CARBON GRADES
Question 1:1 Why Are They Called "Brushes"?
Over 100 years ago pioneering inventors of rotating electrical machines were faced with the requirement to transmit current from a stationary position to a rotating object. They initially solved this problem with bundles of copper wire assembled like a paint brush rubbing against the rotating current collector.
The term "Brush" correctly described the item they used but because it had high friction and wear it wasn't long before the bristle brush was replaced and carbon blocks were used as a much better alternative.
The name "Brush" however has remained to the present day.
Question 1:2 Why Is Carbon Used?
The information has been drawn from experience of Morganite Taiwan Limited Application Specialists combined with a wide range of published information from major carbon supplier and motor manufacture. However, the material can not be downloaded, copied or used without written permission.
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