HYDRAULICS
TRAINING
MODULE 1
Hydraulic Systems
 Transmit power from one point to another
Pascal’s Law
 Pressure applied on a confined fluid is transmitted
undiminished in all directions, and acts with equal
force on equal areas, and at right angles to them
Pascal’s Law
A 10 lb force is applied to a
stopper with an area of one
square inch
Results in 10 lb force on
every square inch of the
container wall
This bottle is filled with
liquid that is noncompressible
If the bottom has an area
of 20 sq. in. and each
square inch is pushed by
a 10 lb of force, the entire
bottom receives a 200 lb
push
PASCAL’S LAW
• Pressure = Force / Area
Pressure = lb/in2 (psi)
Area
= in2
Force
= pounds (lb)
10 lb
INPUT
100 lb
OUTPUT
Force = Pressure x Area
Purpose of Pumps – To create flow and not pressure.
Pressure is created when the flow is restricted
O Psi
Parallel Flow Paths
Parallel Flow Paths
Parallel Flow Paths
0 Psi
100 Psi
300 Psi
600 Psi
SUCTION CONDITIOS FOR HYDRAULIC PUMPS
SUCTION CONDITIOS FOR HYDRAULIC PUMPS
PUMP INLET CONDITIONS AFFECT NOISE AND HEAT GENERATION