Helical Gears And Spur Gears
Spur gears and helical gears are the two most common types of gears. They are typically used for the same type of application; So what's the difference between helical gears and spur gears?
Spur gears are the most common type of gear and the simplest. They have straight teeth parallel to the axis of the gear. Because of their simplest design, they are the easiest to design and manufacture, and therefore the most economical type of gear. Spur gears are not the smoothest or quietest gears, but they are highly efficient and generate a lot of power. They work well at low to moderate speeds, but tend to vibrate and become noisy at higher speeds.
The teeth of Helical gears are at an Angle to the gear shaft. Because the teeth mesh more slowly, they operate more smoothly and quietly than spur gears. Helical gears also have greater tooth strength and higher load carrying capacity. In addition, helical gears can transfer power between parallel or non-parallel axes, while spur gears can transfer power only between parallel axes. The disadvantage of helical gears is that they generate axial thrust that needs to be considered; Something spur gears don't need.
So you see, these are the main differences between helical and spur gears.
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