How to Find Gear Modification Coefficient
How to calculate gear modification coefficient:
1. Total displacement coefficient:

Total displacement coefficient
2. Coefficient of variation of center distance:

Coefficient of variation of center distance
3. Coefficient of change of addendum height:

Coefficient of change of addendum height
4. The modification coefficient table of the number of teeth z=8~20 cylindrical gear:

The modification coefficient table of the number of teeth z=8~20 cylindrical gear

Gear Modification Coefficient