Lubricating grease performance depends on its composition (thickener, base oil, additives) and physical properties. Key characteristics include:
Consistency (NLGI grade) determines stiffness and pumpability.
Dropping Point indicates maximum usable temperature before softening.
Water Resistance prevents washout and maintains lubrication in wet conditions.
Oxidation Stability resists degradation at high temperatures.
Mechanical Stability resists texture breakdown under shear.
Extreme Pressure (EP)/Anti-Wear (AW) properties protect against metal-to-metal contact.
Corrosion Inhibition shields surfaces from rust and chemical attack.
Pumpability ensures flow through centralized systems.
Oil Separation must be controlled to balance bleeding and leakage. Performance varies significantly based on application requirements.