What is pitch cirlce radius?

Answer 1

The pitch circle radius (PCR) is a key measurement in gear design, representing the radius of an imaginary circle that passes through the points where gear teeth effectively engage with each other. It is essential for determining the spacing and alignment of gears in a system, as it influences factors like torque transmission and gear ratio. The PCR is half of the pitch diameter, which is the diameter of the pitch circle. Proper calculation of the pitch circle radius is crucial for ensuring smooth operation and compatibility between meshing gears.