System Design - Sauer Danfoss 40 Series Technical Information

sizinG equations
Flow
Torque
Power
Variables
16
Series 40 Axial Piston Pumps
Technical Information
System design parameters
Use these equations to help choose the right pump size and displacement for your
application.
based on si units
• n • η
V
Output flow Q =
g
1000
V
Input torque M=
g
20 • π • η
M • n • π
Input power P =
30 000
SI units [US units]
V = Displacement per revolution
g
p = Outlet pressure
O
p = Inlet pressure
i
∆p =
p - p (system pressure)
O i
n = Speed
η
= Volumetric efficiency
v
η
= Mechanical efficiency
m
η
= Overall efficiency (η
t
520L0635 • Rev EH • June 2009
based on us units
Output flow Q =
v
(l/min)
• ∆p
Input torque M=
(N•m)
m
Q • ∆p
= Input power P =
(kW)
600 • η
t
cm 3 /rev [in
bar [psi]
bar [psi]
bar [psi]
min -1 (rpm)
• η
)
v m
• n • η
V
g v
231
• ∆p
V
g
2 • π • η
m
Q • ∆p
M • n • π
=
1714 • η
198 000
3 /rev]
(US gal/min)
(lbf•in)
(hp)
t