Danfoss H1 Technical Information

Operating parameters H1P 069/078
Feature Size 069/078
Input speed
(at minimum charge/
control pressure)
Minimum for internal charge supply.
1)
500 min
-1
(rpm)
Minimum for external charge supply.
2)
500 min
-1
(rpm)
Minimum for full performance for internal
charge supply.
1200 min
-1
(rpm)
Rated
3500 min
-1
(rpm)
Maximum
4000 min
-1
(rpm)
System pressure Maximum working pressure
450 bar [6528 psi]
Maximum pressure
480 bar [6960 psi]
Maximum low loop
45 bar [650 psi]
Minimum low loop pressure
10 bar [145 psi]
Charge pressure Minimum
16 bar [232 psi]
Maximum
35 bar [508 psi]
Control pressure Minimum (at corner power for EDC, MDC and
FNR)
14 bar [203 psi]
Minimum (at corner power for NFPE)
25 bar [363 psi]
Maximum
40 bar [580 psi]
Charge pump inlet
pressure
Rated
0.7 bar (absolute) [9 in Hg vacuum]
Minimum (cold start)
0.2 bar (absolute) [24 in Hg vacuum]
Maximum
4 bar [58 psi]
Case pressure Rated
3 bar [44 psi]
Maximum
5 bar [73 psi]
Lip seal external maximum pressure
0.4 [5.8 psi]
1)
Performance (pressure and displacement) may be limited due to limited control pressure.
2)
Full performance (pressure and displacement) possible at minimum charge and control pressure supply.
Fluid specifications H1P
Viscosity and temperature range
Feature Unit Data
Viscosity
Intermittent
1)
mm
2
/s [SUS]
5 [42]
Minimum
7 [49]
Recommended range
12 – 80 [66 – 370]
Maximum
1600 [7500]
Temperature
range
2)
Minimum
3)
(cold start)
°C [°F]
-40 [-40]
Recommended range
60 – 85 [140 – 185]
Rated
104 [220]
Maximum intermittent
1)
115 [240]
1)
Intermittent = Short term t < 1min per incident and not exceeding 2 % of duty cycle based load-life
2)
At the hottest point, normally case drain port
3)
Cold start = Short term t < 3min, p ≤ 50 bar [725 psi], n ≤ 1000 min
-1
(rpm)
Technical Information H1 Axial Piston Single Pumps, Size 069/078
Technical specifications
6 11062169 • Rev 0700 • November 2015

Danfoss H1 Specifications

General

Brand	Danfoss
Model	H1
Category	Water Pump
Language	English