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- W3137402431 abstract "This paper deals with the running torque for ball hearings with polymer lubricant. In this study, two types of ball bearings with polymer lubricant were used. Type I featured a bearing cavity packed with a greater amount of polymer lubricant, and the ball surface, except for around the contact points of the ball and the bearing rings, was covered with polymer lubricant. Type II featured the polymer lubricant packed only on the rivet parts of the cage, and the balls were not covered with polymer lubricant. First, the running torque formulas for ball bearings with polymer lubricant were proposed as the sum of the running torque caused by the shearing resistance of the mineral oil between the bearing rings and the polymer lubricant, the elastic hysteresis, the differential slip, the spinning friction of the balls, the EHL viscous rolling resistance, and the friction between the balls and the polymer lubricant (or the cage). Second, the calculated running torque of the proposed running torque formulas was compared with the measured running torque, within the experimental conditions (rotational speed 500-2500rpm, axial load 29.4-98.0N) of the previous report. The calculated running torque almost matched the measured running torque. In addition, the validity of the proposed running torque formulas was confirmed. Finally, the effects of the shearing resistance of the mineral oil between the bearing rings and the polymer lubricant, the elastic hysteresis, the differential slip, the spinning friction of the balls, the EHL viscous rolling resistance, and the friction between the balls and the polymer lubricant (or the cage) on the running torque were investigated. In the case of Type I, the running torque caused by the friction between the balls and the polymer lubricant, the EHL viscous rolling resistance, and the shearing resistance of the mineral oil between the bearing rings and the polymer lubricant affect significantly on the running torque. In the case of Type II, the running torque caused by the EHL viscous rolling resistance, and the shearing resistance of the mineral oil between the bearing rings and the polymer lubricant affect significantly on the running torque." @default.
- W3137402431 created "2021-03-29" @default.
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- W3137402431 date "2005-01-01" @default.
- W3137402431 modified "2023-09-25" @default.
- W3137402431 title "Running Torque of Ball Bearings with Polymer Lubricant (Running Torque Formulas)" @default.
- W3137402431 doi "https://doi.org/10.1299/kikaic.71.272" @default.
- W3137402431 hasPublicationYear "2005" @default.
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