Quiet Bearing Surface Characterization.
Abstract
Surface chemical and topographical features of bearings which passed or failed Anderometer noise testing were correlated with their noise characteristics. No surface chemical differences existed between noisy or quiet bearings. The former did, however, exhibit bands of circular scratches on 'polar' ends of ball surfaces with an equatorially located narrow 'frost' band consisting of small (2-5 micrometers in diameter) pits of the type associated with contact fatigue. Quiet bearings also possessed frost bands which were always wider and sometimes multiple but did not possess the bands of scratches. The ability of the balls in a noisy bearing to roll freely are believed to be hindered; the resulting increase in contact-Hertz loads and sliding frictional forces result in the generation of noise. Interim solutions to the problem are also discussed. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 17, 1981
- Accession Number
- ADA104412
Entities
People
- H. Ravner
- I. L. Singer
- R. A. Jeffries
Organizations
- United States Naval Research Laboratory