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
- 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