Charge Pump Output Flow; Charge Pump Power Requirements - Sauer Danfoss 40 Series Technical Information

CHaRGe PumP
(continued)
CHaRGe PumP
outPut fLow
CHaRGe PumP
PoweR RequiRements
26
Series 40 Axial Piston Pumps
Technical Information
Features and options
System features and conditions that may invalidate the 10% of displacement rule include
(but are not limited to):
• Operation at low input speeds (below 1500 RPM)
• Shock loading
• Excessively long system lines
• Auxiliary flow requirements
• Use of low speed high torque motors
If a charge pump of sufficient displacement to meet the 10% of displacement rule is
not available or if any of the above conditions exist which could invalidate the 10% rule,
contact your Sauer-Danfoss representative. A charge pump sizing worksheet is available
in bLn-9885, Selection of Driveline
M25 pumps do not allow for integral charge pumps. Other Series 40 pumps are also
available without charge pumps. When an integral charge pump is not used, an external
charge supply is required to ensure adequate charge pressure and cooling.
Flow at standard charge relief setting, 70°C [160°F] inlet
l/min US Gal/min
90 24
75 20
60 16
45 12
30 8
15 4
0 0
0 1000
Speed min (rpm)
Power at standard charge relief setting, 70°C [160°F] inlet
kW hp
6
4
5
4
3
3
2
2
1
1
0
0
0 1000
Speed min (rpm)
520L0635 • Rev EH • June 2009
Components.
2000 3000 4000
-1
T101 302E
M46PT
M46PV
M35PT
M35PV
2000 3000 4000
-1
T101 303E
M46 PT
M35 PT
M46 PV
M35 PV