Spur gears steel, milled - Nozag AG
Spur gears steel, milled - Nozag AG
Spur gears steel, milled - Nozag AG
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20.1<br />
Calculations<br />
1. Introduction<br />
These calculation documents should<br />
help to select the correct driving<br />
elements clearly and easily.<br />
1.1 Terms and current units<br />
Torque M = 9550 . P = d . F Nm<br />
n 2000<br />
Power P = M . n = F . v kW<br />
9550 1000<br />
Loss of power P v = P 1 - P 2 kW<br />
Revolution per minuet (rpm) n = v . 60‘000 = v . 19‘100 min -1<br />
π . d d<br />
Circumference force F = 1000 . P = M . 2000 N<br />
v d<br />
Circumference speed v = π . d . n m/sec<br />
60 000<br />
Efficiency η = P2 = P2<br />
P 1 P 2 + P v<br />
* Efficiency ηr = P2 - P v<br />
P 2<br />
Ratio i = n1 = z2<br />
n2 z1<br />
Safety factor s B = see Table<br />
Load factor f B = see Table<br />
Life span h = L h h<br />
Module m =<br />
Number of teeth z = d<br />
m<br />
154<br />
© by <strong>Nozag</strong> Switzerland - 2009<br />
t = d mm<br />
π z<br />
Diameter d = m . z mm<br />
Pitch circle diameter b mm<br />
Width t = m . π = d . π mm<br />
z<br />
Pitch a = d 1 + d 2 = m (z 1 + z 2 ) mm<br />
2 2<br />
Index 1 : Driving wheel<br />
Index 2 : Driven wheel<br />
* Reverse travel for worm gear boxes
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