Passage of current through moving conductive contacts results in electrical discharge and then melting of the material, which leads to wear. Such kind of bearing wear is common in electrical machines. There are however certain patterns which are unique to this kind wear. This wear pattern is called ‘fluting’, which are repetitive in nature. Electrical discharge can create higher surface roughness. Also the thermal and rheological properties of the lubricant play a big role in the film thickness formation. The passage of current through the lubricant also changes this and is determined by the electrical properties of the lubricant. In this work effect of bearing currents on a 7204 angular contact ball bearing is studied. This is tested with and without different cage materials with an axial load and no radial load, rotating at 2700 rpm. Four experiments were done at different-level of voltage, lube and cage material. Type of lubricant was seen to play a significant role in fluting.
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ASME/STLE 2009 International Joint Tribology Conference
October 19–21, 2009
Memphis, Tennessee, USA
Conference Sponsors:
- Tribology Division
ISBN:
978-0-7918-4895-1
PROCEEDINGS PAPER
Bearing Wear Due to Mechanical Stresses and Electrical Currents Available to Purchase
S. Srinidhi,
S. Srinidhi
GE Global Research, Bangalore, India
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Mayank Tiwari,
Mayank Tiwari
GE Global Research, Bangalore, India
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Rajni Burra,
Rajni Burra
GE Global Research, Bangalore, India
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Hombe Gowda,
Hombe Gowda
GE Global Research, Bangalore, India
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Paul A. Siemers
Paul A. Siemers
GE Global Research, Schenectady, NY
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S. Srinidhi
GE Global Research, Bangalore, India
Mayank Tiwari
GE Global Research, Bangalore, India
Rajni Burra
GE Global Research, Bangalore, India
Hombe Gowda
GE Global Research, Bangalore, India
Paul A. Siemers
GE Global Research, Schenectady, NY
Paper No:
IJTC2009-15255, pp. 499-502; 4 pages
Published Online:
February 16, 2010
Citation
Srinidhi, S, Tiwari, M, Burra, R, Gowda, H, & Siemers, PA. "Bearing Wear Due to Mechanical Stresses and Electrical Currents." Proceedings of the ASME/STLE 2009 International Joint Tribology Conference. ASME/STLE 2009 International Joint Tribology Conference. Memphis, Tennessee, USA. October 19–21, 2009. pp. 499-502. ASME. https://doi.org/10.1115/IJTC2009-15255
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