Special Machining: Due to the complex shape of the herringbone teeth, the machining can be more complex than with spur gears. Specialized machines and equipment must be used to obtain the correct tooth geometries and ensure good gear quality.
Tolerances and Accuracy: Due to the complex interaction between herringbone teeth, it is essential to pay attention to tolerances and accuracy during design and construction. Varying tooth sizes or angles can affect proper meshing and gear life.