Introduction of Hydraulics Technology.

1. INTRODUCTION OF HYDRAULICS
D.M.Gamage
Assistant Mechanical & DCS Eng.
Power &Energy
danushgamage@engineer.com
Presentation -1

2. PRIMARY FUNCTION
A hydraulic fluids have four primary function.
Transmission of power.
Lubrication of moving parts.
Sealing of clearances between mating part.
Dissipation of heat.

3. ESSENTIAL PROPERTIES OF GOOD HYDRAULIC FLUID
 Good lubricity
 Ideal viscosity
 Chemical and environmental stability
 Large bulk modulus
 Fire resistance
 Good heat transfer capability
 Low density
 Foam resistance
 Non- toxicity
 Low volatility

4. APPLICATION OF POWER HYDRAULIC
Automobile power steering
Brakes system of automobile
Aircraft landing gear and lift trucks
Road construction machine CJCB
Military machines
Production power plant

5. ADVANTAGES OF HYDRAULIC
Smooth movement.
Simple and accurate control.
Multiplication of forces.
instant reversible motion.
Simple operation and maintenance.
Capable of providing constant force or torque
regardless of speed changes.

6. DISADVANTAGES OF HYDRAULIC SYSTEM
 Hydraulic lines can burst.
 Leakage cannot be eliminated completely.
 Hydraulic oils are messy.
 May cause fire hear oil leakage with hot
temperatures.

7. INDUSTRIAL HYDRAULICS.
 Injection molding machines.
 Extrusion machines.
 Shearing machines.
 Shearing machines a machines with blades or rotary disk for
cutting sheets plates or bars.
 Car lift
 Exercise equipment.
 Fork lift.
 Rollers.
 Cranes.
 Bull dozer.

8. THANK YOU