Helical gears are commonly used in high speed automobile gear box, machine tool gear box, rolling mills, steam and gas turbines and other high speed application. In helical gears, the friction, heat generation and wear is high. Helical gear exert an end thrust which is absorbed by thrust bearings.ģ. Helical gears are difficult to manufacture as compared to spur gear.Ģ. The contact ratio of these gears is higher than spur gears.ġ. Efficiency of helical gears is very high ( Upto 99 %)Ĥ.These gears are suitable for high speed applications.ĥ. Teeth of helical gears are stronger than the spur gear teeth.ģ. Helical gears operate more quietly and smoothly than the spur gearsĢ. State the advantages and disadvantages of Helical gears.ġ. following are the question and answers related to the helical gear design. Helical gear is a modified form of spur gear in which the teeth are cut at an angle. Helical gear design is concerned about the selection of material to finding the dimensions to fulfill the power transmission requirement. Helical gear design Theory and Numericals Helical gear design theory question and answers
