An excavator is a heavy construction machine that uses a bucket and boom to excavate soil and materials. It has a cab for the operator, tracks or wheels for mobility, and a hydraulic arm with attachments to dig and lift. Excavators come in different types for various jobs, including crawler, backhoe, suction, dragline, and wheel excavators. They are used widely in construction, mining, demolition, landscaping, and other industries for digging trenches, loading trucks, handling materials, and more.

1. INTRODUCTION
TO AN
EXCAVATOR

2. GROUP MEMBERS
•Ameer Hamza
•Ishfaq Khan
•Uzair Ahmed
•Kashif Ahmed

3. LECTURE COTENTS
•1) What is Excavator
•2) Parts of Excavator
•3) Fuctions of excavators
•4) Different Types of Excavator

4. WHAT IS EXCAVATOR
• An excavator is a machine that is used for construction
sites. It is a heavy duty equipment that can progressively
excavate various types of soils
• An Excavator is also called digger.
• Because an excavator uses hydraulics or a wire rope
pulley system to dig holes or trenches and is, therefore,
often called a digger.
• An excavator is a fascinating piece of machinery and is
essential to our line of work.

5. HOW DOES AN
EXCAVATOR WORK
• Excavators use diesel to power the engine because it
produces a higher horsepower. The three main features of
an excavator include:
• Control Cabin – Where the controls are located and the
operator uses pedals and levers to steer the excavator.
• Tracks – Excavators have rigid tracks that are fixed in
place. The tracks are operated by a series of gears that
are fused to the engine via the drive shaft. Excavators can
move forwards or backwards in a straight line

6. HOW DOES AN
EXCAVATOR WORK
•Excavator Arm –
Composed of three
hydraulic pistons that
work together with
steel piston arms,
moving the bucket
loader to scoop and
dig.

7. PARTS OF AN EXCAVATOR
• (1)Boom
• (2)Boom Cylinder
• (3)Bottom Roller(s)
• (4)Bucket
• (5)Bucket Cylinder
• (6)Cab, ROPS
• (7)Car Body

8. PARTS OF AN EXCAVATOR
• (8) Stick, Crowd Cylinder
• (9)Engine
• (10)Final Drive
• (11)H-Link
• (12)Main Control Valve
• (13)Main Hydraulic Pump
• (14)Side Link, Dog Bones

9. PARTS OF AN EXCAVATOR
•(15)Slewing Ring
•(16)Sprocket
•(17)Swing Drive &
Motor
•(18)Track Adjuster
•(19)Track Chain, Rails
•(20)Track Pad, Grouser
Pad

10. PARTS OF AN EXCAVATOR

11. PARTS OF AN EXCAVATOR

12. PARTS OF AN EXCAVATOR

13. DIFFERENT TYPES OF AN EXCAVATORS
•Crawler excavators
•Backhoe
•Suction excavators
•Dragline excavators
•Wheel excavator

14. CRAWLER EXCAVATORS
•Crawler excavator runs on two endless tracks
(chain wheel system). These types of excavators
are used in hilly areas where risks of sliding of
machinery are on the verge. Crawler type
excavator has low ground pressure because of
spreading of load on large area. Therefore, it is
also used where soil support is weak

15. CRAWLER EXCAVATORS

16. BACKHOE
• Among all different types of excavators that are
available, backhoe is the most commonly used today. Its
effectiveness is widely applicable in areas that may not
be specific to excavation only. A backhoe excavator has
a bucket that faces the driver. The bucket extracts soil by
pulling it towards the driver before lifting. Backhoe
excavators are used to excavate soil in mining or
construction sites or unload waste in dumpsites. They
are small in size as compared to the other excavators
but they serve various purposes

17. BACKHOE

18. SUCTION EXCAVATORS
•Suction excavators are also known as vacuum
excavators. They come along with a suction pipe
that helps carry away loose soil and debris, cuts
using sharp teeth at the edge of the pipe. Before
the excavation begins, a water jet is used in order
to loosen the ground. These types of excavators
are used in places that require careful and safe
exploration of underground elements.

19. SUCTION EXCAVATORS

20. DRAGLINE EXCAVATORS
• A dragline excavator is a heavy duty equipment that is
slightly different and much bigger in size. These types of
excavators are used in large scale applications. Dragline
excavators can be further divided into standard mobile
draglines and on-site draglines. On-site draglines are
large size excavators that are assembled and built on
site, while the standard ones are bigger than the back
hoe excavators but smaller than the on-sites. Draglines
are too heavy and can damage the roads so are
transported in parts and assembled on site.

21. DRAGLINE EXCAVATORS

22. WHEEL EXCAVATOR
Wheel excavator runs on wheels and are
used for excavation and loading of dump
trucks and most of the time it is only used
for plain ground operations. Because of
wheel, it is not suitable for hilly areas due
to low grip value to the ground.

23. WHEEL EXCAVATOR

24. USES OF EXCAVATOR
•The following are some uses of excavators:
•Digging of trenches, holes, foundations
•Material handling
•Brush cutting with hydraulic saw and mower
attachments
•Forestry work
•Forestry mulching
•Construction

25. USES OF EXCAVATOR
•Demolition with hydraulic claw, cutter
and breaker attachments
•General grading/landscaping
•Mining, especially, but not only open-pit mining
•River dredging
•Driving piles, in conjunction with a pile driver
•Drilling shafts for footings and rock blasting, by use
of an auger or hydraulic drill attachment
•Snow removal with snowplow and snow
blower attachments
•

26. USES OF EXCAVATOR

27. “
”
EXCAVATOR USE FOR LOADING OF TRUCKS

28. THE END