The Hydraulic Cylinder
At the end of this video, you should be able to:
Explain how a cylinder works
Identify the parts of a cylinder
In-studio: cylinder props on the table
The Cylinder
PISTON
PORT
BARREL
PORT
ROD
ROD SIDE
CAP SIDE
The Cylinder
=
Cylinder Eciency
At the end of this video, you should be able to:
Iden5fy the primary sources of energy loss in a hydraulic cylinder
Compute the mechanical and volumetric eciency of a hydraulic
cylinder
Ecienc
Pressure Drop in Fittings
At the end of this video, you should be able to:
Explain why a fitting causes a pressure drop
Calculate the pressure drop for standard fittings
Hydraulic Fittings
SAE 90 deg
elbow
Loss
coefficient
2
2
= = 2
2
2
Fitting
K
90
Fluid Viscosity
At the end of this video, you should be able to:
Explain the concept of viscosity using a fundamental equation
Explain how viscosity is measured
Explain how viscosity affects the efficiency of a hydraulic system
Viscosity
Force
shear st
Introduc*on to Fluid Power Conduits
At the end of this video, you should be able to:
Recognize the various types of uid power conduits
Describe the basic anatomy of a conduit
Describe the eect of uid resistanc
What is Fluid Power?
At the end of this video, you should be able to:
Dene uid power
Iden;fy common applica;ons of uid power
List benets and limita;ons of hydraulics and pneuma;cs
Dening Fluid Power
Flui
Fluid Power Variables
At the end of this video, you should be able to:
Dene pressure and ow rate and their common units
Describe the dierence between through and across variables
Calculate the power of hydrau
Pressure Drop in Pipes
At the end of this video, you should be able to:
Explain why a pressure drop is required for flow
Calculate the pressure drop for any length pipe
Flow Requires a Pressure Difference
1
2
Resistance Depends on Type of Flow
Laminar
T