The effect of brush spring pressure on the wear behaviour of copper-graphite brushes with electrical current

Yasar I., Canakci A., Arslan F.

TRIBOLOGY INTERNATIONAL, vol.40, no.9, pp.1381-1386, 2007 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 40 Issue: 9
  • Publication Date: 2007
  • Doi Number: 10.1016/j.triboint.2007.03.005
  • Journal Name: TRIBOLOGY INTERNATIONAL
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.1381-1386
  • Keywords: brush spring pressure, copper-graphite brushes, friction and wear, FRICTION, MECHANISM
  • Karadeniz Technical University Affiliated: Yes

Abstract

Electrical brushes are used to conduct current between stationary part and moving part of a motor or a generator. To ensure proper current transfer and continuous contact, brushes must be loaded against the sliding contact surface with a sufficient force. High loads increase frictional losses and wear of the brushes and/or sliding surface. While relatively low contact pressure causes arcing and higher voltage drop.