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The mixing proportions of the different components are not fixed and vary depending on the characteristics and properties desired on the final product.
In general we could say that they can vary within the following percentages:
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THICKENED |
3 to 25 % |
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BASE OILS |
75 to 96 % |
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ADDITIVES |
0 to 10 % |
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1.- THIKENERS:
Greases are always classified according to the different type of thickener that it has been used:
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 ORGANOMETALLICS
|
 INORGANICS
|
 ORGANICS
|
| Metallic Soaps |
Bentones |
Polyureas |
| Mixed Soap |
Silica gels |
Polymers |
| Complex Soap |
Black smoke |
Asphalts |
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2.- BASE OILS:
They are in charge of the main function, lubrication; and they could be classified in two main groups:
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MINERALS
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SINTHETICS
|
| Paraffinics |
Polyalphaolefins |
| Naphtenics |
Esters |
| Aromatics |
Polyglicols |
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Silicones |
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PTFE |
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3.- ADITIVES:
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CHEMICAL PROPERTIES
|
STRUCTURAL PROPERTIES
|
RHEOLOGICAL PROPERTIES
|
LIMIT LUBRICATION
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| Antioxidants |
Friction modifiers |
Viscosity index improvers
|
Antiwear |
| Anticorrosive |
Adherents |
Pour point depressors
|
Extreme pressure |
Inhibitors
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Film resistance
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Mixing the three ingredients, thickeners, base oils and additives we would come up with very different grease types, that we will classify as:
4.1 METALLIC SOAPS
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CONVENTIONAL SOAPS
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COMPLEX SOAPS
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| Calcium |
Lithium complex |
| Calcium Anhydrous |
Calcium complex |
| Sodium |
Aluminium complex |
| Lithium |
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Aluminium |
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Barium |
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4.1 ORGANICS SOAPS
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 |
Polyureas |
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4.1 INORGANICS SOAPS
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Bentone |
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