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Why are ball bearings used in machinery ...

Why are ball bearings used in machinery ?

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By using ball bearings between the moving parts of a machinery the sliding friction gets converted into rolling friction As rolling friction is much less than sliding friction power dissipation is reduced .
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Knowledge Check

  • The ball bearings used in a machine are of different materials, this is because

    A
    adhesive forces are greater than cohesive forces.
    B
    adhesive forces and cohesive forces are rqual in magnitude, opposite in direction ,
    C
    adhesive forces are less than choesive forces.
    D
    machine looks good, attractive.

  • The ball bearing are used in machinaries to reduce friction. Which type of friction is under consideration here ?

    A
    Static friction
    B
    Kinetic friction
    C
    Limiting friction
    D
    Can't predict

  • The ball bearing are used in machinaries to reduce friction. Which type of friction is under consideration here ?

    A
    Static friction
    B
    Kinetic friction
    C
    Limiting friction
    D
    Can't predict

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