Definition of pitch circle in English:
An imaginary circle concentric to a toothed wheel, along which the pitch of the teeth is measured.
- The velocity ratio is equal to the inverse ratio of the diameters of pitch circles.
- The hypoid gears used in conventional axles do not have a true pitch circle since both sliding and rolling occurs at the teeth and the gears could not be replaced with frictional disks.
Definition of pitch circle in:
- British & World English dictionary