Effect of Two Inner-ring Oil-flow Distribution Schemes on the Operating Characteristics of a 35-millimeter-bore Ball Bearing to 2.5 Million DNNational Aeronautics and Space Administration, Scientific and Technical Information Branch, 1985 - Ball-bearings - 11 pages |
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11 deg F 2.5 million DN 25 percent flowed 50-percent flow 8x104 Shaft speed axial grooves bearing bore bearing operating bearing power loss cage speed cm³/min combined load contact angle cool the inner cooling oil flow Cooling the outer double-inner-land-guided cage flow to inner-ring gal/min heat rejection increased with increasing increasing shaft speed inner-ring raceway inner-ring temperature Lewis Research Center load conditions load of 667 Lubricant flow rate lubricated the bearing NASA obtained from heat obtained from torque oil flow rates oil flow supplied oil supplied oil-flow distribution schemes oil-inlet temperature Outer ring cooled Outer-ring cooling oil outer-ring temperature Parametric tests percent cage slip percent flowed axially Power loss obtained radial holes radial load rate to test rejection to lubricant speed and lubricant speed of 72 split-inner-ring ball bearing strain gage test machine tests 50 percent thermocouple Thrust and 222 thrust load torque measurements total oil flow