Elliott Digger Derrick - Planning Information for Parameters

www.hawe.de | 2015 10-2014-2.1 - D 7960 N - V60N 17
3.2 Planning information for parameters
Determination of nominal sizes
Delivery flow
Drive torque
Drive power
V
g
= Geom. delivery volume (cm
3
/rev.)
Δp
= Differential pressure
n = Speed (rpm)
η
V
= Volumetric efficiency
η
mh
= Mechanical-hydraulic efficiency
η
t
= Overall efficiency (η
t
= ηv · η
mh
)