CATALOGUE

GLOSSARY
A = maximum input angular speed [rpm]
B = frequency of the loading cycle [Hz]
C p = specific heat of lubricant [J/Kg·°C]
F r1 = radial force on the hub shaft [daN]
F r2 = radial force on the double shaft (Protrusion next to the gear) [daN]
F r3 = radial force on the double shaft (protrusion far from the gear) [daN]
F a1 = axial compression force on the hub shaft [daN]
F a2 = axial traction force on the hub shaft [daN]
F a3 = axial compression force on the double shaft [daN]
F a4 = axial traction force on the double shaft [daN]
f a = ambient factor
f d = duration factor
f g = usage factor
i = reduction ratio, meant as a fraction (es.1/2)
J = total inertia [kgm 2 ]
J r = bevel gearbox inertia [kgm 2 ]
J v = inertia downstream of the bevel gearbox [kgm 2 ]
M tL = torque on the slow shaft [daNm]
M tv = torque on the fast shaft [daNm]
n 1 = fast shaft
n 2 = slow shaft
P d = power dissipated in the form of heat [kW]
P i = input power to the single bevel gearbox [kW]
P L = power on the slow shaft [kW]
P v = power on the fast shaft [kW]
P j = inertia power [kW]
P u = output power to the single bevel gearbox [kW]
P e = equivalent power [kW]
PTC = adjustment factor on thermal power
Q = lubricant flow-rate [litre/min]
rpm = rounds per minute
t a = ambient temperature [°C]
t r = bevel gearbox surface temperature [°C]
η = bevel gearbox running efficiency
ω L = slow shaft angular speed [rpm]
ω v = fast shaft angular speed [rpm]
α L = angular acceleration of the slow shaft [rad/s 2 ]
Unless otherwise specified all tables show linear measurements expressed in [mm].
All the reduction ratios are expressed in the form of a fraction, unless otherwise specified.
163
components specifications and glossary