pitch circle


Also found in: Encyclopedia, Wikipedia.
Related to pitch circle: Pitch Diameter, Circular Pitch

pitch circle

n
(Mechanical Engineering) an imaginary circle passing through the teeth of a gearwheel, concentric with the gearwheel, and having a radius that would enable it to be in contact with a similar circle around a mating gearwheel
References in periodicals archive ?
Tenders are invited for Curved Tooth Flexible Type Full Geared Coupling, Fgc Percent U2013 101, Flange Od Percent U2013 170Mm, Hub Od Percent U2013 110Mm, No Of Fixing Holes Percent U2013 6, Pitch Circle Diameter Of Fixing Holes Percent U2013 140Mm, Diameter Holes Percent U2013 13Mm, Pilot Bore Percent U2013 20Mm, Hardness Of Teeth Percent U2013 180-250 Bhn, Material Percent U2013 C55 Mn Percent U2013 75 Steel, Material Hardness Test Certificate From Govt.
It is the distance measured on the circumference of the pitch circle from a point of one tooth to the corresponding point on the next tooth.
The geometry of an involute gear results in its having a pitch circle and a base circle.
The correct assembly involved the preformed steelwork being cast into the concrete base using a series of jig rings to set the pitch circle location of the threaded foundation rods that would protrude from the base.
It is derived by dividing the diameter (mm) of the pitch circle by the number of teeth.
The pitch circle of a gear is an imaginary circle which passes through the point where the teeth touch when one gear meshes with another.
This will be seen as a polished worn strip, about the pitch circle diameter, on each of the teeth as shown in the diagram.
So, we can also establish the ratio of the pinion tooth thickness on the pitch circle and gear tooth thickness on the pitch circle [S.
The elliptic curve can be considered anywhere between the cam circumference and the diameter of pitch circle, named for the flexible gear- flexspline, the pitch ellipse.
The raceway segments are engineered to maximize the length of the load-carrying zone, and the design of the plastic cage allows for all the balls in the bearing to run on the same pitch circle diameter.
Four articles on a pitch circle of 42 mm, for example, can be arranged.