Bearings

Table of Contents




Assortment of Bearings

Image of an assortment of bearings.

What are Bearings?

  • A machine element that constrains relative motion to only the desired motion

  • Reduces friction between moving parts

  • Provides free linear movement of the moving part or for free rotation around a fixed axis; or, it may prevent a motion by controlling the vectors of normal forces that bear on the moving parts

  • Experience loads in two basic directions


Exploded View of Bearing

Image of a bearing in an exploded view.



Characteristics of Bearings

General Bearing Terminology

Inner and Outer Race
      • Made From high-purity chrome allow
      • The rings have either a groove or track that allows the a ball bearing or a roller bearing to sit in
Retainer/Cage
      • Guides the rolling elements and keeps them spaced out

      • Typically made from steel

Rolling Elements
      • Can be either balls bearings or roller bearings

Radial/ Axial Forces
      • Radial forces are applied along the radius of the bearing or perpendicular to the shaft
      • Axial forces are applied along the axle through the bearing


Types of Rolling Elements


Radial and Axial Force Diagram


Diagram of the types of rolling elements.

Diagram of radial and axial force.

Bearing Use Cases

Some uses for bearings are:

    • Fidget Spinners
    • Conveyor Systems
    • Car Engines
    • Drill Motors 
Bearing Use Cases

Image of bearings used in various scenarios.

References 

This page is content pulled directly from MTE100, contact the course instructor for details.

Contributors:

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Lesley Lang 1153 days ago
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