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 50-percent flow axial grooves bearing bore bearing inner bearing operating bearing power loss cage slip increased cm³/min combined load contact angle cool the inner cooling oil flow Cooling the outer deg K 11 double-inner-land-guided cage equal inner flow to inner-ring gal/min heat rejection increased with increasing increasing shaft speed inner-ring temperature Lewis Research Center load conditions load of 667 Lubricant flow rate NASA obtained from heat obtained from torque oil flow rates oil flow supplied oil-flow distribution schemes oil-inlet temperature Outer ring cooled Outer-ring cooling oil outer-ring temperature percent cage slip percent flowed axially Power loss obtained radial holes rate to inner rate to test rejection to lubricant ring on bearing speed and lubricant speed of 72 speed on test split-inner-ring ball bearing strain gage test bearing temperature tests 50 percent thermocouple Thrust and 222 thrust load torque measurements total oil flow