Profile deformation

It generates unanticipated operating constraints on gear with new profile. The involute shape is the only one to permit, for the industry gears, an operation without shock or vibration. The deformation causes:

  • A variation in angular speed which results in a vibration pulse to vertical dominant
  • A variation of the operating pressure angle which, combined with an excessive backlash in the bearings, increases vibration
  • An appearance of interference (root step and bump on its head) operating producing a predominantly horizontal vibration
  • A modification of the sliding bearing and parameters (increase in the wear rate)