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The number of teeth on two meshing gears is 40. The teeth have 20° involute profile and the module is 6 mm. What will be the circular pitch?

The number of teeth on two meshing gears is 40. The teeth have 20° involute profile and the module is 6 mm. What will be the circular pitch? Correct Answer 18.85 mm

Concept:

Circular pitch: 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. It is usually denoted by pc. Mathematically,

The circular pitch is given by

PC = π × m

where PC is circular pitch and m is module.

Calculation:

Given:

Module m = 6 mm, T = 40

PC = π × m

PC = π × 6

PC = 18.85 mm.

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