DIN 18CrNiMo7 4 Module 77T Double Helical Gears

DIN 18CrNiMo7 Steel 4 Module 77T Double Helix Gears For Gearbox

1) Description of Double Helix Gears

A double helical gear consists of two helix angles with opposite hands. Inside the gears, the axial thrusts

oppose each other and the resulting forces are not transmitted to the bearings on the shaft. This gear

pair setup means they can handle high loads and allow for a solid transmission while running.

2) Features of Double helix Gears

Double helical gears have all of the advantages of helical gears, which are strong and quiet, plus have

the advantage of being able to cancel the thrust forces by combining helical gears with both right and

left hand twists. On the other hand, they have the disadvantage of being difficult to manufacture.

Double helical gears and herringbone gears are the same type of gear, but those with a groove in the

center are called double helical gears, while those without a groove where the left and right teeth meet

in the center, are called herringbone gears.