Views: 0 Author: Site Editor Publish Time: 2026-06-09 Origin: Site
Most lithium-based greases contain 70%–90% base oil, making the base oil the primary factor influencing lubrication performance. High-performance lithium greases increasingly use PAO (polyalphaolefin) synthetic base oils because they provide better oxidation stability, lower volatility, improved low-temperature fluidity, and longer service life compared with conventional mineral oils.
Lithium-based grease is a lubricating grease formulated using:
Base Oil
Lithium Soap Thickener
Performance Additives
A typical formulation contains:
Component | Typical Content |
|---|---|
Base Oil | 70-90% |
Thickener | 5-20% |
Additives | 1-10% |
Since base oil represents the largest portion, its quality directly affects grease performance.
The base oil provides:
Lubrication film formation
Temperature performance
Oxidation resistance
Wear protection
In many grease formulations, base oil determines overall service life more than the thickener itself.
Compared with mineral oils, PAO synthetic base oils typically offer:
Property | Mineral Oil | PAO |
|---|---|---|
Viscosity Index | Moderate | High |
Oxidation Stability | Moderate | Excellent |
Volatility | Higher | Lower |
Low Temperature Fluidity | Moderate | Excellent |
Service Life Potential | Moderate | Extended |
Require thermal stability and long grease life.
Require low friction and oxidation resistance.
Require extended lubrication intervals.
Require durability under heavy loads.
Require water resistance and wear protection.
Typically 70–90%.
To improve oxidation stability, low-temperature performance, and service life.
Yes.
Performance depends on application requirements, but PAO is often selected for demanding operating conditions.
