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Gear Tooth Proportions: helical
helical 20 full metric addendum to helical 20 full metric working depth
Gear tooth proportions — standard dimensions and formulas for spur, helical, bevel, and worm gears per AGMA standards
| gear type | record id | formula | parameter | pressure angle deg | standard | tooth form | value factor (dimensionless) |
|---|---|---|---|---|---|---|---|
| helical | helical 20 full metric addendum | m n | addendum | 20 | AGMA 207.06 / ANSI/AGMA 1012-G05 | full depth | 1 |
| helical | helical 20 full metric axial pitch | pi*m n/sin(helix angle) | axial pitch | 20 | AGMA 207.06 / ANSI/AGMA 1012-G05 | full depth | 3.141593 |
| helical | helical 20 full metric clearance | 0.25*m n | clearance | 20 | AGMA 207.06 / ANSI/AGMA 1012-G05 | full depth | 0.25 |
| helical | helical 20 full metric dedendum | 1.25*m n | dedendum | 20 | AGMA 207.06 / ANSI/AGMA 1012-G05 | full depth | 1.25 |
| helical | helical 20 full metric fillet radius | 0.3*m n | fillet radius | 20 | AGMA 207.06 / ANSI/AGMA 1012-G05 | full depth | 0.3 |
| helical | helical 20 full metric normal circular pitch | pi*m n | normal circular pitch | 20 | AGMA 207.06 / ANSI/AGMA 1012-G05 | full depth | 3.141593 |
| helical | helical 20 full metric tooth thickness normal | pi*m n/2 | tooth thickness normal | 20 | AGMA 207.06 / ANSI/AGMA 1012-G05 | full depth | 1.570796 |
| helical | helical 20 full metric transverse circular pitch | pi*m n/cos(helix angle) | transverse circular pitch | 20 | AGMA 207.06 / ANSI/AGMA 1012-G05 | full depth | 3.141593 |
| helical | helical 20 full metric whole depth | 2.25*m n | whole depth | 20 | AGMA 207.06 / ANSI/AGMA 1012-G05 | full depth | 2.25 |
| helical | helical 20 full metric working depth | 2*m n | working depth | 20 | AGMA 207.06 / ANSI/AGMA 1012-G05 | full depth | 2 |
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