WORKSHOP

General Maintenance Welding


Course Description

This workshop is structured to teach skills that upgrade competency and/or cross train individuals in welding techniques. The content of each segment can be customized according to the specific needs of each group. The length of each segment (shop practice time) will need to be extended in proportion to the proficiency desired of the individuals within each group. The length will also be affected by the type (sheet metals, plate, pipe) metals, the kind of metals (carbon steel, stainless steel, aluminum) and the welding positions to be learned.

Course Length

24 hours

Objectives

Participants successfully completing this course will be able to:

  • Identify various types of bearings and their applications
  • Explain how bearing lubrication works
  • Explain proper handling and storage procedures to prevent premature bearing failure
  • Select and use the proper tools to remove bearings
  • Clean and visually inspect bearings prior to use
  • Select the proper tools and install press fit bearings
  • Properly install and adjust adjustable bearings
  • Determine lubrication requirements and lubrication intervals
  • Select and properly install various types of contact and non-contact seals
  • Identify major causes of bearing failures through visual inspections

Topical Outline

  • Bearing types and application
  • Proper Shaft to Bore & Housing Fits
  • Bearing handling procedures, Installation of Press Fit Bearings
  • Proper Bearing Heating Techniques
  • Bearing Preventative Maintenance
  • Preloading Bearings – Taper and Spherical Roller
  • Purpose of Lubrication and Types of Grease, Oil, and Additives
  • Lubricant storage and handling and filtration
  • Proper Lubrication Amount to Use Based on Bearing Size
  • Proper Re-lubrication Intervals Based on Hours of Operation
  • Greasing electric motor bearings
  • Methods to check bearing operation
  • Symptoms of Bearing Failures
  • Causes of bearing failures, including:
    • Improper Fit
    • Handling and Installation Damage
    • Wear
    • Overheating
    • Inadequate lubrication / Over lubrication
    • Corrosion
    • Brinelling and false brinelling
    • Equipment misalignment
    • Fretting
    • Electrical arcing
    • Activity – identifying and interpreting actual failures

Hands-On Activities

Removal and installation of loose fit bearings and press fit bearings, Measuring shafts and bores, Installing and adjusting taper roller bearings in gearboxes, Installing and adjusting spherical roller bearings, Greasing bearings and effects of improper lubrication.