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Efficiency of Small Machine Elements

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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%
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Related Topics

Mechanics

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

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Engine & Gear Oil - Recommended Viscosity vs. Outside Temperature

Oil viscosity vs. temperature.

Friction - Friction Coefficients and Calculator

Friction theory with calculator and friction coefficients for combinations of materials like ice, aluminum, steel, graphite and many more.

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Gear train transmissions - bicycle gearing.

Gears

Gears effort force vs. load force.

Industrial Lubricants - Viscosities vs. ISO-VG Grade

ISO-VG viscosity grades for industrial lubricants.

Rolling Resistance

Rolling friction and rolling resistance.

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SketchUp Extension - Online 3D modeling!

Add standard and customized parametric components - like flange beams, lumbers, piping, stairs and more - to your Sketchup model with the Engineering ToolBox - SketchUp Extension - enabled for use with the amazing, fun and free SketchUp Make and SketchUp Pro . Add the Engineering ToolBox extension to your SketchUp from the Sketchup Extension Warehouse!

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