Course Content
Overall Assessment
Put your knowledge to the test
0/1
NAL Training
About Lesson

WHAT IS LUBRICATING GREASE?

Lubricating Grease —a semi-fluid to solid product of a dispersion of a thickener in a liquid lubricant.

  • Discussion—The dispersion of the thickener forms a two-phase system and immobilizes the liquid lubricant by surface tension and other physical forces. Other ingredients are commonly included to impart special properties.

 

Consider Grease as a Sponge:

  • 3-D network of thickener particles
  • Thickener particles adhere to each other due to chemical attractive forces
  • Pores filled with oil/additives
  • Release oil when mechanical force is applied
  • Absorbs oil when force is relieved

 

WHY LUBRICATE WITH GREASE?

  • OEM Requirements        
  • Cost
  • Stays In Place
    • Vertical shafts, bearings
    • Minimizes leakage
  • Hard to Reach Lubrication Points
  • Extended Relubrication Intervals

 

WHEN TO LUBRICATE WITH GREASE?

Lubricating Grease is Critical…therefore, proper recommendation/usage is of the utmost importance.

  • To decrease dripping and splattering of lubricant
  • To decrease frequency of lubrication
  • To seal out contaminants
  • For intermittent operation
  • To suspend solid additives
  • Under extreme operating conditions:
    • high temperature
    • high pressure
    • shock loading
    • slow speed / high pressure
  • Machine badly worn
  • When noise reduction is very important