Sauer Danfoss H1 - Charge Pump Charge Pump

29
11063344 • Rev EA • Dec 2012
H1 Axial Piston Pump, Size 045/053, Single
Technical Information
Charge Pump Charge pump sizing/selection
In most applications a general guideline is that the charge pump displacement should
be at least 10 % of the total displacement of all components in the system. Unusual
application conditions may require a more detailed review of charge ow requirements.
Please refer to BLN-9885, Selection of Drive line Components, for a detailed procedure.
System features and conditions which may invalidate the 10 % guideline include (but are
not limited to):
• Continuous operation at low input speeds (< 1500 min
-1
(rpm))
• High shock loading and/or long loop lines
• High ushing ow requirements
• Multiple Low Speed High Torque motors
• High input shaft speeds
Contact your Sauer-Danfoss representative for application assistance if your application
includes any of these conditions.
Charge pump ow and power curves
Charge pressure: 20 bar [290 psi]
Viscosity and temperature: 11 mm
2
/s [63 SUS] 80 °C [180 °F]
Charge pump ow
Charge pump power requirements
Charge Pump
00
1
3
6
9
12
14
10
20
30
40
50
0 500
1000
1500
2000
2500
3000
3500
4000
Speed min
-1
(rpm)
l/min
US gal/min
12 cm
3
[0.73 in
3
/rev]
P003 368E
0.5
1.0
1.0
2.0
3.0
4.0
5.0
1.5
2.5
3.5
2.0
3.0
Kw
HP
P003 369E
12 cm
3
[0.73 in
3
/rev]
0
00
500
1000
1500
2000
2500
3000
3500
4000
Speed min
-1
(rpm)