The document provides an overview of various types of gears, including helical, spur, bevel, internal, and worm gears, detailing their structure and applications. Each gear type is described in terms of its unique design and suitability for specific industrial applications, such as fertilizer and printing industries for helical gears, or marine engines and washing machines for spur gears. Additionally, it highlights the functional significance of these gears in power transmission and rotational force application across diverse machinery.

1. TYPES AND
APPLICATION OF
GEARS

2. Introduction
• The gears are a type of mechanical element whose teeth
are cut around a cylindrical or conical surface with the
same space.
• It is used for the rotation and transmission of force from
the drive shaft to the driven shaft when coupling a pair of
elements.
• The gears can be classified into
1. Spiral Gear
2. Cycloid and Tro-choidal Gears

3. Types Of Gears
• Helical Gear
• Spur Gear
• Bevel Gear
• Internal Gear
• Worm Gear

4. Helical Gear
• The helical gears are cylindrical gears that are used with
parallel shafts similar to the spur gears and have winding
teeth.
• They have a better teeth grip than spur gears, have
excellent low noise and can carry higher loads, which
makes them suitable for high speed applications.

5. Application of Helical
Gear:-
1.Fertilizer industries
2.Printing industries
3.Earth moving industries
4.Rolling Mill
5.Power and Port Industries
6.Textile Industries
7.Plastic Industries
8.Automobile Gearboxes
9.Machine Tool Gearboxes
Helical Gear

6. Spur Gear
• A gear with a cylindrical pitch surface is called a spur
gear.
• Spur gears are cylindrical gears that belong to the group
of parallel shaft gears and have straight and straight
teeth parallel to the shaft.
• Spur gears are the most used gears that can be achieved
with high precision with relatively simple production
processes.

7. Application of Spur Gear:-
• Metal Cutting Machine
• Power Plant
• Marine Engines
• Mechanical Clock and Watches
• Fuel Pumps
• Washing Machine
• Gear Motors and Gear Pumps
• Rolling Mill
• Rack and Pinion mechanism
Spur Gear

8. Bevel Gear
• The bevel gears have a conical shape and are used to transmit
forces between two intersecting axes at a point (intersection
axis).
• The bevel gear has a cone on its step surface and its saw teeth
are cut along the cone.
• Bevel gears typically operate on shafts that are 90 to each
other .

9. Application of Bevel
Gear:-
• Printing Machine
• Agriculture
• Bottling
• Material Handling
• Steering
• Differential Drives
• Hand Drill Bevel Gear

10. Internal Gear
• The internal gears are teeth cut into a cylinder or
cone and paired with external gears.
• The internal gear are used for transmitting
power between two parallel shaft.

11. Application of Internal
Gear:-
Internal gears are often used in
applications involving planetary
gear drives and gear couplings. Internal Gear

12. Worm Gear
• The screw shape that is cut on the shaft is a worm, the
mesh gear is a helical gear, and the axes that do not
intersect are called worm gears.
• Worm gears are gears which are widely used for
transmitting power at high velocity ratios between non
intersecting shafts that are generally, but not necessarily
at right angles.

13. Worm Gear
• It is mostly used as a speed reducer, which
consists of worm and worm wheel or gear.
• The worm gear is similar to a helical gear with a
face curved to conform to the shape of the worm.

14. Application of Worm
Gear:-
• Gate Control Mechanism
• Hoisting Machines
• Automobile Steering Mechanism
• Lifts
• Conveyors
• Presses
• Speed Reducer
Worm Gear

15. Thank You..!!