Sliding Contact Bearings: Material Properties Quiz
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Questions and Answers

What is the term used to describe a bearing where the diameters of the journal and bearing are equal?

  • Rolling contact bearing
  • Sliding contact bearing
  • Hydrodynamic bearing
  • Fitted bearing (correct)
  • In a hydrodynamic lubricated bearing, what happens when the journal rotates eccentrically with the bearing axis?

  • The journal and bearing diameters become unequal
  • The bearing material corrodes away
  • A pressure is built up in the clearance space (correct)
  • The bearing material deforms plastically
  • Which of the following is not a property of sliding contact bearing materials?

  • Coefficient of friction (correct)
  • Fatigue strength
  • Compressive strength
  • Embeddability
  • What is the ability of bearing material to accommodate small particles of dust or grit without scoring the journal material called?

    <p>Embeddability</p> Signup and view all the answers

    Which property of sliding contact bearing materials allows the bearing to accommodate shaft deflections and bearing inaccuracies by plastic deformation?

    <p>Conformability</p> Signup and view all the answers

    Which property of sliding contact bearing materials ensures the bearing does not corrode away under the action of lubricating oil?

    <p>Corrosion resistance</p> Signup and view all the answers

    What is the main difference between radial bearings and thrust bearings?

    <p>Radial bearings support loads perpendicular to the direction of motion, while thrust bearings support loads along the axis of rotation.</p> Signup and view all the answers

    What is the main difference between sliding contact bearings and rolling contact bearings?

    <p>Sliding contact bearings have steel balls or rollers between the moving and fixed elements, while rolling contact bearings have sliding contact between the surfaces.</p> Signup and view all the answers

    What is a full journal bearing?

    <p>A sliding contact bearing where the angle of contact between the bearing and journal is 360 degrees.</p> Signup and view all the answers

    What is the difference between a full journal bearing and a partial journal bearing?

    <p>Full journal bearings have a 360 degree contact angle, while partial journal bearings have a contact angle less than 360 degrees.</p> Signup and view all the answers

    What type of sliding contact bearing is a slipper or guide bearing?

    <p>A bearing where the sliding action is guided in a straight line and carries radial loads.</p> Signup and view all the answers

    What is a partial journal bearing with no clearance called?

    <p>A hydrodynamic bearing</p> Signup and view all the answers

    What is the primary purpose of using a bearing material with high thermal conductivity?

    <p>To allow for rapid removal of heat generated by friction</p> Signup and view all the answers

    Which property is important for bearing materials to maintain consistent clearance over a wide temperature range?

    <p>Low coefficient of thermal expansion</p> Signup and view all the answers

    Which of the following is a common type of sliding contact bearing material?

    <p>Babbitt metal</p> Signup and view all the answers

    What is the primary function of lubricants in bearings?

    <p>To reduce friction and dissipate heat</p> Signup and view all the answers

    Which of the following is a non-metallic bearing material?

    <p>Carbon-graphite</p> Signup and view all the answers

    What is a common property of silver and silver-lead bearings that makes them suitable for aircraft engines?

    <p>High fatigue strength</p> Signup and view all the answers

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