Performance of 75-millimeter-bore bearings to 1.8 million DN with electron-beam-welded hollow balls
Harold H. Coe, Herbert W. Scibbe, Richard Jay Parker, United States. National Aeronautics and Space Administration, Lewis Research Center
National Aeronautics and Space Administration, 1970 - Technology & Engineering - 21 pages
Fatigue performance of hollow and solid ball bearings.
5 pages matching AISI M-50 steel in this book
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115 hollow ball 75-MILLIMETER-BORE BEARING air-oil-mist AISI M-2 AISI M-50 steel Ball from bearing bearings used 11/16-inch bearings using hollow centrifugal force contact angle cracks diameter balls diameter hollow balls DN WITH ELECTRON-BEAM-WELDED electron-beam welding ELECTRON-BEAM-WELDED HOLLOW BALLS electropolished to determine failed in flexure fatigue lives five-ball fatigue tester function of shaft Harold H heat hollow ball bearings improvement in torque inside surface Lewis Research Center loads of 500 lower support balls M-50 steel hollow maximum Hertz stress NASA five-ball fatigue NASA TN outer-race temperature parent material percent reference 9 rolling elements rolling-element fatigue running track sectioned parallel series 115 hollow series 215 bearings shaft speed shown in figure Similar bearings solid and hollow solid ball bearings spalled balls steel hollow balls stress concentration stress of 700 surface spall Test Bearing Lubrication tests were conducted thrust load torque and outer-race upper test ball weld area weld zone