Herringbone Gears

Brad Foote Gear Works can currently manufacture herringbone gears to 63" diameter and 1½ diametral pitch with a 22" total face width.

Description of Herringbone Gears

Herringbone gears are a type of double helical gear, meaning that they have both a left hand and right hand element to cancel thrust or side loading on their bearings. A true herringbone has a 30° helix angle, 20° transverse pressure angle, and an AGMA stub whole depth factor. They may have a center groove between the two hands, but this is not absolutely necessary. Herringbone gears are cut on specialized machines that cut both hands at the same time, precisely locating the apex of the two helixes.