Danfoss OSPB C F D L LS handleiding
Handleiding
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Valve functions in OSPC, OSPF, OSPD and OSPL LS steering units
Pilot pressure relief valve; (P - T, Qp) characteristic
The pilot pressure relief valve protects the steering unit against excessive pressure. The pilot pressure
relief valve in the OSPC LS, OSPF LS, OSPD LS and OSPL LS steering unit together with the priority valve
limit the maximum steering pressure P-T. The pilot pressure relief valve is set at an oil flow to the priority
valve of 25 l/min [6.60 US gal/min].
For OSPC, OSPD and OSPL load sensing dynamic steering units, the setting values are valid at a dynamic
flow of 0.6 l/min [0.16 US gal/min].
For OSPF load sensing dynamic steering units, the setting values are valid at a dynamic flow of 1.1 l/min
[0.29 US gal/min].
Setting tolerance:
</= 170 bar [2465 psi]: rated value +5 bar [72.5 psi].
> 170 bar [2465 psi]: rated value +10 bar [145 psi].
3000
2500
2000
1500
1000
0
200
180
160
140
120
100
80
60
0
psi bar
152B79.10
0 10 20 30 40 50 60 70 80 l/min
P-T P-T
Q
p
Q
p
0 2 4 6 8 10 12 14 16 18 20 US gal/min
A
B
OSPC/OSPF/OSPD/OSPU/OSPL LS+OLS 80
A = 170 + 5 bar [2465+ 73 psi]
B = 140 + 5 bar [2030 + 73 psi]
Shock valves
The shock valves protect the steering unit and reduce external forces on the steering cylinder by limiting
the pressure difference from L to T and from R to T.
The shock valves are set at 3 l/min [0.792 US gal/min]
At higher flow pressure peaks may occur.
The shock valves are of the direct acting type, so they react very quickly.
Setting tolerance: rated value +20 bar [290 psi].
Suction valves
The suction valves allow oil suction to avoid cavitation in the steering cylinder. To provide correct
suction, a back pressure valve must be fitted in the tank line from the steering unit.
Generally Danfoss recommend a back pressure of 2 bar [29 psi], but on vehicles with strong self
straightening tendencies and on articulated steered vehicles, we recommend 5-10 bar [72.5 - 145 psi]. For
further advice, please contact the Danfoss Sales Organization.
Technical Information
OSPB/C/F/D/L LS Steering Units, OLS Priority Valves, OSQ Flow Amplifiers
LS Steering Units OSPB, OSPC, OSPF, OSPD, OSPL
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©
Danfoss | April 2021 BC152886483962en-001003
Bekijk gratis de handleiding van Danfoss OSPB C F D L LS, stel vragen en lees de antwoorden op veelvoorkomende problemen, of gebruik onze assistent om sneller informatie in de handleiding te vinden of uitleg te krijgen over specifieke functies.
Productinformatie
| Merk | Danfoss |
| Model | OSPB C F D L LS |
| Categorie | Niet gecategoriseerd |
| Taal | Nederlands |
| Grootte | 11908 MB |
