Shell Gadus Grease Basics

Check out Shell Gadus Grease Basics:

Why Use a Grease?

  • Stays in place where oil can’t.
  • Seals components from contaminants.
  • Carrier for solid additives.
  • Cost effective maintenance.

What Makes Up a Grease?

  • Oil (80-90%)
  • Thickener (2-20%)
  • Additives (0-5%)

Oil

  • The oil does the lubricating.
  • If synthetic oil is used, the grease is a synthetic grease.
  • Oils with a wide range of viscosities are used.
  • ISO VG 68 to 3200+.

thickener types

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

function of thickener

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Consistency vs. Viscosity

  • Viscosity: a base oil property.
    • ISO viscosity – units are centistokes (cSt)
  • Consistency: related to thickener content.
    • More thickener = stiffer grease
    • NLGI grades (000 through 6)
  • Consistency grade is independent of viscosity!
    • “Soft” grease can have high viscosity base oil
    • “Hard” grease can have a low viscosity base oil

gadus grease

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

How do I Choose the Right Grease?

  1. Select Base Oil Viscosity as if only oil will be used
  2. Select required performance Additives
     (i.e. EP, moly, tackifier, etc.)
  1. Select best Thickener Type and Base Oil Type
  2. Use the softest Consistency that will stay in place

Consider other application requirements.

  • What grease was previously used in the component?
    • thickener compatibility (next slide)
    • oil compatibility
  • How is grease delivered to the component?
    • hand pumped or auto lubed?
    • long grease lines?

grease compatability

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Four Important Shell Gadus Grease for Most plants

4 greases

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