Page 136 - CITS - Fitter Trade Pactical - Volume - 2

FITTER - CITS

EXERCISE 39: Demo on application of various types of

lubricants & coolants

Objectives

At the end of this exercise you shall be able to
• identify types of lubricants and coolants
• types of lubrication method
• properties of lubicants
• importance of lubricants and coolants.

PROCEDURE

Lubricants are substances that reduce friction between moving surfaces, wear and tear between moving parts, as
well as to dissipate heat and prevent corrosion.
• Function: Their primary role is to minimize the resistance between contacting parts, preventing them from
grinding together and causing wear and tear.
Advantages:
• Reduced friction: This leads to smoother operation, less energy loss, and extended lifespan of machinery.

• Heat dissipation: Friction generates heat, and lubricants help absorb and carry it away, preventing overheating
and protecting components.
• Protection from wear: By creating a thin film between surfaces, lubricants minimize direct contact, reducing
wear.
• Corrosion prevention: Some lubricants contain additives that form a protective barrier on metal surfaces,
preventing rust and other forms of corrosion.

• Sealing and cleaning: Lubricants can act as a seal against dust and dirt, keeping contaminants out of delicate
mechanisms.
Application methods
• Gravity Feed system

• Force Feed System
• Splash System
Gravity feed system:
In a gravity feed lubrication system, The lubricant slowly feeds due to gravity and may include a metering
mechanism to control the flow rate.

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