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Efficiency of Small Machine Elements

Friction and efficiency in bearings and roller chains.

ball bearing

Typical efficiencies of well lubricated small machine elements:

  • ordinary bearings : 95 - 98%
  • roller bearings : 98%
  • ball bearings : 99%
  • spur gears with cut teeth including bearings : 99%
  • bevel gears with cut teeth including bearings : 98%
  • belts : 96 - 98%
  • high-class silent power transmission chain : 97 - 99%
  • roller chains : 95 - 97%
  • bicycle derailer : 87 - 97%
  • bicycle gear hub : 86 - 95%

Related Topics

  • Mechanics

    The relationships between forces, acceleration, displacement, vectors, motion, momentum, energy of objects and more.

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