Disadvantages:
1.It is not possible for a worm wheel to drive a worm unless certain conditions are met
Applications:
1. It includes speed reducers, antireversing gear devices making the most of its self-locking features, machine tools, indexing devices, chain blocks, portable generators, etc.
Advantages:
1. It have a very quiet and smooth meshing action
Features:
1. It looks like a standard spur gear with slightly angled and curved teeth.
2.It changes the rotational movement by 90 degrees.
HELICAL GEARS
Disadvantages:
The helical gear efficiency is lower due to the contact between its teeth, which produces axial thrust and generates heat.
Applications:
1.It consists of transmission components, automobile, speed reducers, etc.
Advantages:
1.More effective in reducing noise and vibration when compared with a spur gear.
Features:
1.Gears in cross section produce push powers in the axial direction.
2.Has higher strength compared with a spur gear
BEVEL GEARS
Disadvantages:
1.Involves some technical difficulties in manufacturing
Applications:
1. It consists machine tools, printing presses,Automobiles, tractors, vehicles and so on.
Advantages:
It have a advantage of increasing the speed of rotation of the chuck and this makes it possible to drill a range of materials.
Features
1.Provides reduction ratios up to approx. 1:5
2.Has better proficiency of transmission with diminished gear noise
SPUR GEARS
Disadvanatges:
1. they will produce vibration;
Applications:
1.Transmission components
Advantages:
1. It is easy to manufacture
Features:
1.Spur gears are a sort of tube shaped stuff.
2.There are no axial force in spur gears
