Lubrication of 35-millimeter-bore ball bearings of several designs at speeds to 2.5 million DNParametric tests were conducted with 35mm bore, angular contact ball bearings with either a single or double-outer-land-guided cage. The bearings were either lubricated by oil jets or employed inner ring lubrication. Outer ring cooling was added in selected tests. Test conditions were a radial load of 222 N (50 lb) and/or a thrust load of 667 N (150 lb), shaft speeds to 72,000 rpm, and an oil inlet temperature of 394 K (250 F). Lubricant flow to the bearing ranged rom 300 to 1900 cc/min (0.08 to 0.50 gal/min). All bearings were successfully run at speeds to 2.5 million DN. Increasing the lubricant flow decreased bearing ring temperatures but increased bearing power loss. The power loss and race temperatures of a jet lubricated bearing with double-outer-land-guided cage were always higher than those of the single-land-guided-design at similar test conditions. The lowest bearing operating temperatures were achieved when inner ring lubrication and outer ring cooling were combined. Cage slip of a double-outer-land-guided cage was approximately twice that of a single-outer-land-guided cage.
Document ID
19830007241
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Signer, H. R. (Industrial Tectonics, Inc. Cleveland, OH, United States)
Schuller, F. T. (NASA Lewis Research Center)
Date Acquired
August 11, 2013
Publication Date
August 1, 1982
Publication Information
Publication: AGARD Probl. in Bearings and Lubrication