Bevel and Helical gear

 Bevel gear ;

It is used to transfer power between the shaft , which are inclined to each other and lie in same plane.

In this type of gear , straight helical teeth cut on its periphery , which are uniform in shape and situated in equal distance  .

Below figure of bevel gear.



                                                                       Bevel gear

Helical gear :

In helical gear . teeth are cut at angle to axis of rotation . it is used to transmit the power between two parallel shaft . helical gear are run more slightly than the spur gear  these gear are widely used in automobile vehicles.

there are two types of helical gear 

1. Single helical gear 

2. Double helical gear (Herringbone gear)

Helical gear


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