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  • Ball Bearing Radial Play (Internal Clearance)
    At first glance, ball bearings are relatively simple mechanisms. However, an analysis of their internal geometries reveals that they are quite complex. For example, the ball to raceway conformity, the radial play, and the number of balls all impact the ability a ball bearing to support loads under
  • Bearings with proper play live longer
    Shown are plots of representative bearing types with standard inner and outer race curvatures. Such plots allow designers to calculate approximate relationships between radial play, contact angle, and end play. Bearings with special curvatures have different relationships. Also, end play values
  • A few guidelines for fitting miniature bearings into assemblies
    of thermal gradients) estimate the reduction in bearing radial play by 80% of the actual diametrical interference fit. This 80% figure is conservative, but it is a useful design guideline. Depending on materials involved, this factor will range from 50 to 80%. The following is an example
  • Feels good, works well:
    . The assembly could have only a minimum of radial play, vibration, and backlash between the screw and nut. This tight fit ensured customers would perceive the massage action as smooth. In addition, the assembly had to be durable while operating at elevated temperatures. It also had to traverse
  • What Is Bearing Preload?
    Bearing Preload is an axial or thrust load applied to a bearing that removes excess play. There are many ways to apply preload, as well as many benefits and potential problems with preload. This article will provide an overview of bearing preloading in common radial and angular contact ball bearing
  • More about the music that engines make
    : Potato, potato, potato. That is the sound of a Harley-Davidson motorcycle at idle. How about this? Dewgee, dewgee, dewgee. That, of course, is a radial aircraft engine at idle. By now you are wondering what this is all about. Well, back in our May 4 issue, this column talked about the euphonious sound

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