Invention of The Kingsbury Thrust Bearing
Kingsbury’s research at the University of New Hampshire led him to conceive an early Kingsbury bearing that consisted of several stationary arc segments facing a thrust collar on the rotating shaft. Each segment would have a boss on the side away from the thrust collar, allowing it to tilt and form an oil wedge that would carry the thrust. Kingsbury tested this new bearing with a modified version of his earlier screw thread testing machine. The bearing was successful with pressures of up to 4,000 psi at speeds of 285 rpm. This pressure exceeded that for common collar-type bearings by a factor of 80 to 100, thus proving the promise of the Kingsbury bearing.
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