ABSTRACT
Different parallel-axis noninvolute gearing are distinguished based on the actual values of the contact ratios. In gearing with transverse contact ratios greater than one (mp > 1) and face contact ratios equal to zero (mF = 0), the total contact ratio, mt, is equal to the transverse contact ratio (m mt p≡ >1). Spur noninvolute gears meet the requirements mp >1 and m mt p≡ >1.
