|
Term |
Symbol |
Formula |
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30 deg Flat Root 0.5 to 10 module |
30 deg Fillet Root 0.5 to 10 module |
37.5 deg Fillet Root 0.5 to 10 module |
45 deg Fillet Root 0.5 to 10 module |
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Pitch diameter |
D |
mZ |
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|
Base diameter |
DB |
mZ cos α D |
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|
Circular Pitch |
p |
πm |
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|
Base Pitch |
p b |
πm cos α D |
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|
Tooth Thick Mod |
es |
According to selected fit class, H/h, H/f, H/e, or H/d |
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Min Major Diameter Int |
DEI min |
m(Z +1.5) |
m(Z +1.8) |
m(Z +1.4) |
m(Z +1.2) |
|
Max Major Diameter Int |
DEI max |
DEI min + (T + λ)/tan α D |
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|
Form Diameter Int |
DFI min |
m(Z + 1) + 2c F |
m(Z + 1) + 2c F |
m(Z + 0.9) + 2c F |
m(Z + 0.8) + 2c F |
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Min Minor Diameter Int |
DII min |
DFE + 2c F |
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|
Max Minor Diameter Int |
DII max |
DII min + (0.2m 0.667 - 0.01m -0.5 ) |
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|
Circ Space Width Basic Min Effective Max Actual Min Actual Max Effective |
E bsc EV min E max E min Ev max |
0.5πm 0.5πm EV min + (T + λ) EV min+ l E max - λ |
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|
Max Major Diameter Ext d |
DEE max |
m(Z + 1) - es/tan α D |
m(Z + 1) - es/tan α D |
m(Z + 0.9) - es/tan α D |
m(Z + 0.8) - es/tan α D |
|
Min Minor Diameter xt |
DEE min |
DEE max - (0.2m 0.667 - 0.01m -0.5 ) 2 |
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Form Diameter External |
DFE |
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Max Minor Diameter Ext d |
DIE max |
m(Z - 1.5) - es/tan α D |
m(Z - 1.8) - es/tan α D |
m(Z - 1.4) - es/tan α D |
m(Z - 1.2) - es/tan α D |
|
Min Minor Diameter Ext |
DIE min |
DIE min - (T + λ)/tan α D |
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