Formulae

Formulae and example calculations for various involute gear types.

1. Symbols

2. Standard Spur Gears

3. Profile Shifted External Spur Gears

4. Profile Shifted External Helical Gear - Normal

5. Profile Shifted Internal & External Spur Gear

6. Profile Shifted Internal & External Helical Gear

7. Standard System Straight Bevel Gears

8. Gleason System Straight Bevel Gears

9. Profile Shift Distribution

10. Backlash

11. Contact Ratio