Bearing Maintenance Training

203-01 Introduction to Bearings

When you complete this lesson, you will be able to explain the basic concepts behind the use of bearings. In addition, you’ll be able to describe their mechanical functions, loading forces, common lubricants, main classifications, and the types of friction they encounter.

  • Describe the three types of friction forces that affect bearings
  • Explain the basic mechanical functions of bearings
  • Describe the loading forces that affect bearings
  • Explain types of lubricants used in bearings
  • Identify the two main categories of bearings

203-02 Rolling Contact Bearings

When you complete this lesson, you will be able to identify the most common types of rolling contact bearings, and recognize some of their design considerations and common operating characteristics.

  • State the operating principle behind rolling contact bearings
  • Describe the two common categories of rolling contact bearings
  • Identify different ball bearing designs
  • Identify different roller bearing designs
  • Explain how various types of rolling contact bearings are used for axial loads

203-03 Sliding Surface Bearings

When you complete this lesson, you will be able to identify the most common types of sliding surface bearings, and recognize some of their design considerations and common operating characteristics.

  • List the common names used for sliding surface bearings
  • State the operating principle behind sliding surface bearings
  • Define boundary and full film lubrication
  • Describe bushings and sleeve bearings
  • Describe split bearings
  • Explain lubricating grooves, oil rings, and wick lubricators
  • List advantages of sliding surface bearings

203-04 Bearing Installation and Removal

When you complete this lesson, you will be able to explain some basic techniques for the installation and replacement of rolling contact and sliding surface bearings.

  • Describe tools used to install a rolling contact bearing
  • Explain methods of installing a shrink fit bearing
  • Explain methods of checking an installed rolling contact bearing for proper operation
  • Describe sounds an improperly installed rolling contact bearing can make and explain the cause
  • Describe alignment of a sliding surface bearing
  • Describe tools used in the removal of sliding surface and rolling contact bearings
  • Explain the removal process for rolling contact and sliding surface bearings

203-05 Bearing Seals

When you complete this lesson, you will be able to describe and identify the seals most commonly used on bearings, their specific applications, and their design considerations.

  • Explain the function of bearing seals and describe their main components
  • Identify the two types of bearing seals
  • Describe the types of materials used in the manufacture of oil seal lips
  • Discuss the selection of oil seals based on speed of the application
  • Name some oil seals that are classified by their use
  • Name some oil seals that are classified by service conditions
  • Explain labyrinth seal construction
  • Describe labyrinth seal classifications
  • List the advantages of a labyrinth seal

203-06 Troubleshooting Bearing Failures

When you complete this lesson, you will be able to recognize symptoms that may indicate failing bearings. In addition, you’ll be able to troubleshoot bearing failures and use the information you gain to prevent a reoccurrence.

  • Identify the symptoms of failing bearings
  • Discuss bearing failure due to:
    • Normal fatigue
    • Overheating
    • Lubricant
    • Corrosion
    • Brinelling and false brinelling
    • Equipment misalignment
    • Fretting
    • Electrical arcing
    • Thrust forces
  • Identify types of background data you should gather when troubleshooting bearings
  • List troubleshooting questions that can help you determine whether bearing failure was related to specific problems with the:
    • Lubrication
    • Rotating race
    • Fixed race
    • Rolling element cage or retainer
    • Rotating elements