Operating Parameters; Fluid Specifications - Danfoss Series 90 Technical Information

Technical Information
Technical Specifications

Operating Parameters

Parameter
Input speed
Minimum
Rated Speed
Maximum
Operating parameters
System pressure Maximum working pressure
Maximum pressure
Maximum low loop
Minimum low loop pressure
Charge pressure Minimum
Maximum
Control pressure Minimum (at corner power for EDC and FNR) bar
Minimum (at corner power for NFPE)
Maximum
Charge pump inlet Rated
pressure
Minimum (cold start)
Maximum
Case pressure Rated
Maximum
Lip seal external pressure Maximum

Fluid Specifications

Feature
Viscosity Intermittent
Minimum
Recommended range
Maximum
Temperature Minimum (cold start)
2
range )
Recommended range
Rated
Maximum intermittent
Filtration Cleanliness per ISO 4406-1999
(recommended
Efficiency (charge pressure filtration)
minimum)
Efficiency (suction and return line filtration)
Recommended inlet screen mesh size
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)
Series 90 Axial Piston Pumps
Unit Frame
042 055
min-1(rpm) 500 500
4200 3900
4600 4250
1)
3
)
1)
520L0603 • Rev 0804 • March 2016
075 100
500 500
3600 3300
3950 3650
bar [psi]
bar [psi]
[psi]
bar (absolute) [in Hg vacuum] 0.7
bar [psi]
bar [psi]
bar [psi]
Unit
2
mm /s [SUS]
°C [°F]
β-ratio
µm
130 180 250
500 500 500
3100 2600 2300
3400 2850 2500
450 [6525]
480 [6960]
45 [650]
10 [145]
18 [261]
34 [493]
14 [203]
22 [319]
40 [580]
[9]
0.2 [24]
4.0 [58]
3.0 [44]
5.0 [73]
0.4 [5.8}
5 [42]
7 [49]
12-80 [66-370]
1600 [7500]
-40 [-40]
60-85 [140-185]
104 [220]
115 [240]
22/18/13
β = 75 (β ≥ 10)
15-20 10
β = 75 (β ≥ 2)
35-45 10
100 – 125
T000 129E
9