tooth Load factor
K
A
application factor, to take into account loads additional to nominal loads from external sources, i.e. the driving and driven machine. K
A
=1 for uniform load, K
A
=1.5 for moderate shocks, up to K
A
=2 and higher for heavy shocks.belasting.
K
v
dynamic factor, very accurate gearing, i.e. accurate alignment and adequately lubricated so that the accuracy is maintained, K
v
=1...1.1
K
H
α
transverse load factor for contact stress and KFa for tooth root stress account for the effect of non-uniform distribution of transverse load between several pairs of simultaneausly contacting gear teeth. For accurate gearing K
H
α
=1, less quality grade K
H
α
=1.2.
K
H
β
face load factor for contact stress. This factor takes into account the effects of the non uniform distribution of load over the gear face width on the surface stress (K
H
β
) and on the tooth-root stress (K
F
β
). For accurate gearing K
H
β
=1.1...1.4.
σ
H
/ σ
H0
= (K
A
*K
v
*K
H
α
*K
H
β
)
½
enter new value in the main program window manually !