Double Helical Gear And Herringbone Gear Teeth Details

 

 

Double helical gear (double helical gear)
Double helical gears are a variant of helical gears characterized by a gap between two adjacent bevel surfaces, each with the same helix angle but in opposite directions. This design eliminates thrust loads, allowing for smoother gear operation and greater overlap. Double helical gears are also suitable for enclosed gear drives.

herringbone gear
Herringbone gears are similar to double helical gears, but there is no gap between the two helical surfaces. The small size of this gear makes it particularly suitable for use in high shock and vibration environments. Although herringbone gears are difficult and costly to manufacture, they have the advantages of no axial thrust, smooth operation and high efficiency.