Question

What is the differance between spar gear and helical gear..Plzz tell me..

Answer 1

the spur gear will have a zero helix angle it is straigh tooth gear used to transmit power between the shafts wich are mutually parallel ,there is a negligible axial thrust present between shafts ..

helical gear have a helix angle while in spur gears there is no helix angle

Answer 2

Helical gears: Helical gears are used for parallel shaft drives. They have teeth inclined to the axis. Hence for the same width, their teeth are longer than spur gears and have higher load carrying capacity. Their contact ratio is higher than spur gears and they operate smoother and quieter than spur gears.


well, I guess this images speeks for it self.