These are the pressure machines that we use in carrying out mechanical work

1. HYDRAULIC AND
PNEUMATIC MACHINE
BY: ALLI ABIODUN ISMAIL

2. OBJECTIVES
• By the end of the lesson, you should be able to:
• identify hydraulic and pneumatic machines;
• name the components of each machines;
• explain the principle behind the working of hydraulic and pneumatic devices;
• state the uses of the machines.

3. HYDRAULIC MACHINES
• Hydraulic machines are those machines which utilize pressurized liquid fluid power to do simple work.
Examples of these machines include:
• Hydraulic jack
• Hydraulic brakes in cars
• Water wheels, turbines, garden or lawn sprinkler, etc

4. HYDRAULIC JACK

5. PRINCIPLE OF HYDRAULIC JACK

6. WATER WHEEL

7. TURBINE

8. LAWN SPRINKLER

9. PNEUMATIC MACHINES
• Pneumatic machines run on compressed air. Air pressure is used to operate a part or all of the
mechanism.
Examples of these machines are
i) Bicycle tyre pump
ii) The suction (force) pump
iii) Centrifugal pump
iv) Compressed air pump

10. EXAMPLES OF PNEUMATIC MACHINES
Bicycle pump
Centrifugal pump
Suction pump

11. CLASS WORK
GROUP THE FOLLOWING IMAGES INTO HYDRAULIC AND
PNEUMATIC MACHINES
A
GF
E
B
C
D
H