Word Count : 1027

---

Lubricants are substances introduced between two surfaces in relative motion to reduce friction, wear, and heat generation, thereby improving the efficiency and lifespan of mechanical systems. The mechanism by which lubricants function involves creating a protective layer or film between surfaces, which prevents direct metal-to-metal contact. This film can be in the form of a liquid, semi-solid, or solid depending on the type of lubricant and the operating conditions. The lubrication mechanism is generally classified into boundary, hydrodynamic, and elastohydrodynamic lubrication. Boundary lubrication occurs when the surfaces are in close proximity and the lubricant film is very thin, allowing only molecular layers of lubricant to separate the surfaces. In this regime, the chemical properties of the lubricant, including the presence of additives, play a critical role in minimizing wear and friction. Hydrodynamic lubrication occurs when a continuous fluid film completely separates the moving surfaces, and the pressure generated by the relative motion supports the load. This type of lubrication is typical in journal bearings and rotating shafts where the surfaces are immersed in or coated by a sufficient amount of lubricant. Elastohydrodynamic lubrication is observed in heavily loaded contacts, such as gears and rolling-element bearings, where elastic deformation of the surfaces and the pressure-dependent viscosity of the lubricant contribute to the formation of a load-bearing film. Lubricants are classified based on their physical state, chemical composition, and specific application requirements. The primary classification is into liquid lubricants, semi-solid lubricants, and solid lubricants. Liquid lubricants, which include mineral oils, synthetic oils, and vegetable oils, are the most _____ _____ ___ ___ ________ ______ _____ ____ _____ ________ ______ _____.
____ ____ _______ ___ ____ ____ ________ ___ ___.
_______ ______ _________ ________ _______.
_______ ___ _____ _______ ________ _______ ______.
____ ___ ________ ________ _____ _____ ________ __________ ___ ________ _____.
_______ ________ _________ ______ ___ ___ __________ _____ _____ ____ _________.
_________ ________ ____ ___ _________ ___ _______ ___ _______.
______ __________ ________ ___ _____ ______ _______ ____ __________ ________.
________ ___ ____ _____ ____ _______ ___.
___ __________ ____ ________ ___ _______ _______ _______ ___ ___ _______ ____.
___ __________ ____ _____ _____ _____.
__________ ___ _________ _________ ________ _____ __________ ________ _______ _____ __________.
___ __________ ________ _______ ___ _______ ____ _______ _________ __________ _______.
_____ ________ ____ ________ ____ ___.
___ ________ _______ __________ _______.
________ ___ ____ ____ ________.
_______ ____ ______ _________ ___ ____ ____ _______ _____ __________.
__________ __________ ________ ___ ___ _________ ________ ________ ___ _________ _________ ____.
_____ ________ _______ ____ ____ _________ ____ ________ _____ _______ __________ _______.
____ _______ ____ ________ ___ ________ _____ _______.
__________ ___ ________ ____ ____ _______ ________.
______ ________ __________ ______ ___ ______ __________ __________ _______.
___ ____ ________ ______ _____.
__________ ______ ________ __________ _________ _____ ______ ________ ____ ________ __________ ________.
_________ _________ ________ ________ _______ ____ _____ ___ ________ ____ ______ _________.
_______ _______ ________ __________ ____.
_____ ____ _____ ______ _______ _____ ____ _______ ____ ___ ____.
_________ ____ __________ _________ _________ __________ ________ ________ _____ __________ _________.
_________ _________ ______ _________ ________ ____ _______ _______ ____ ______.
________ _________ ______ __________ _____ __________ _____ ___ ___.
__________ _____ __________ _____ _____ ______ ________ ____.
__________ ____ _______ _______ ____ ______ ________ ____ _________ _____ ___ ______.
________ _____ ___ _____ _______ __________ _______ ___ _________ ___ _______.
_________ _______ __________ ______ __________ ___ _________ _________ _________.
_____ ____ __________ __________ ________ ________ ____.
__________ _________ _______ _______ ___ __________ ___ _______ _________.
__________ ___ _____ ________ _______ ___.
_________ ___ ____ ___ __________ __________ ____ _______ _____.
_____ ______ _________ ______ _______ ______ _________.
__________ _____ __________ ________ __________ _________ _____ ______ ____ _______ ______.
_______ ________ ____ ____ ______ ____ ______ __________ _____ ___ _________ _______.
__________ ___ __________ ________ ___ ____ ____ ___ __________ _______.
________ _________ _______ __________ _______ _______ _________.
______ ___ ____ ______ _______ ____ __________.
_____ _______ _____ _____ ____ ___ _____ ___.
_________ _____ ______ ______ _____ _______ ______ _______ ________ _________ __________.
___ _____ ________ ________ ________.
________ _______ ______ ________ _______ __________ _____.
_________ ____ _________ ________ _______ ___ __________ __________ __________.
______ ______ __________ __________ _______ _________ _______ ____.
_________ _______ ______ _________ _______ ______ _________ ______ ___ ______.
____ ______ ___ _______ _____ ________ _________.
____ __________ ______ __________ ______ ___.
__________ _______ ________ _____ _____ ________ ____ ____ _________.
_______ ____ ___ _____ ____ __________ ____ ___ ________ _______ ______ _________.
____ ________ ________ __________ _________ ________ ________ _______ ___ ______ _______ __________.
_____ ________ ___ _______ _______ _______ ___.
________ _______ _______ _____ _______ _____ _______ ________.
__________ _________ ______ ____ _______ _________.
____ _________ ____ __________ ________ __________ _______ ___ ___ ___.
____ ______ ______ ___ _________.
_________ _______ _________ ___ ______.
______ ______ _________ __________ __________ ___ _________ ______ _____ ____ __________ ____.
__________ __________ ___ _________ _____ _________ ______ ______.
_________ _______ _______ ____ ___ ____.
___ __________ _______ _______ _________ _________ _______ _______ __________ ____ _____ _______.
____ ________ _____ _________ ______ _______ ____ _____ __________ _________.
_________ ______ _______ ___ __________ ___ ___ __________ ______.
______ _______ _____ ______ _____.
_______ _______ __________ ______ ___ _________ ____.
___ _______ __________ _________ _______ _________ ______ _____ _________ ______ _________.
____ ___ ______ _____ _______ ________ _________ _________ _____ ________ ____ _______.
________ ____ _____ ____ ________.
_______ ________ ________ ___ _____.
________ ____ _____ ______ ___ ___.
_________ __________ __________ _______ ____ ________ ____ ____ ____.
________ _________ _______ ____ ___ _____ ______ ___ ___.
_________ ______ __________ _____ ___ __________ _______ _____.
____ _____ ___ _________ _____ ________ ____.
________ ___ _________ _____ ______ ____ ____ _______.
___ ______ _____ _______ ______ ____ ____.
_____ __________ ____ ____ _________ _______ __________ _____ __________ _____.
________ _______ _________ __________ _____ ________ __________.
________ _____ _______ _____ ___.
____ ___ ___ __________ ___ ___ ___.
__________ ___ ___ _____ __________ __________.
__________ __________ _____ __________ ___ ___.
____ ___ _________ ________ __________ _________ _____ ______ ________ _____.
_______ ________ ______ ______ _____ ____.
__________ ______ __________ ______ ________ _____ _________.
____ _____ ____ _________ ___ _____ _______.
_________ _________ ______ __________.
Get Full Answer on WhatsApp