Lubricants are substances used to reduce friction between moving parts by forming a protective film or layer. They play a crucial role in various industries and applications, from automotive to industrial machinery. Functions of Lubricants COOLING: Heat transfer medium. SEALING: Filling in uneven surfaces. Provides a fluid seal LUBRICATION: Provide a film between moving parts. CLEANING: Holding contaminants in suspension. Carries contaminants to a filter or sump DAMPENING AND CUSHIONING: These are done to components under high pressure. PROTECTION: From oxidation and corrosion. Transmits power (hydraulics). Types of Lubricants LIQUID LUBRICANTS: Engine oils, synthetic oils, motor oils, hydraulic fluids, transmission liquids, and service fluids. SEMI-LIQUID LUBRICANTS: Grease is the most commonly used lubricant with a higher viscosity than oils. SOLID OR DRY LUBRICANTS: Graphite is the commonly used solid lubricant. Other types are molybden...
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