Question

Among spur gear and helical gear, which has smooth engagement and thus lesser noise?

(a) Helical Gears

(b) Spur Gears

(c) Both have equal noises

(d) Can’t be determined

This query came up by my college professor while I was bunking the class.

This problem appears in the Helical Gears section in module Rolling Contact Bearings, Spur Gears and Helical Gears of Machine Design

Answer 1

Recommended answer is (a) Helical Gears

In simpler terms: There is a gradual pick up of load in helical gears and hence smooth operation.