• Válvula piloto NG 6, equipada con elemento de la válvula de control y vaina de válvula, rendimiento de servo confiable, estructura robusta, operación unilateral, en la posición de función Fail-safe cuando se corta la fuente de alimentación 4/4 • Sensor de desplazamiento con cubierta metálica (Lvdt CC/CC) • La etapa principal tiene la función de retroalimentación de posición, el rendimiento de servo es confiable • Válvula de inversión de servo - 4/3 piloto NG10~NG27
Especificaciones técnicas
General
Design
Spool type valve, pilot operated
Construction
Servo solenoid directional control valve NG6, with position controller for pilot valve and main stage
Installation orientation
Subplate, mounting hole configuration NG10...27 to ISO 4401-...
Installation position
opcional
Circumstances temperature range
℃
–20...+50
Peso
kg
NS 10 8.35
NS 16 10
NS 25 18
NS 27 18
Vibration resistance, test condition
Max.25g, shaken in 3 dimensions(24 h)
Hydraulic (measured with HLP 46, ϑoil = 40℃ ±5℃)
Hydraulic fluid
Hydraulic oil to DIN 51524...535, other fluids after prior consultation
Rango de viscosidad
recommended
mm2/s
20...100
max. permitted
mm2/s
10...800
Pico permissible degree of contamination of pressure fluid. Purity class to ISO 4406 (c)
Class 18/16/13 1)
Caudal direction
See symbol
Nominal Caudal at ∆ p = 5 bar per notch)
L/min
NS 10
NS 16
NS 25
NS 27
See ordering code
presión de funcionamiento máximo
Ports P, A, B external control oil inlet
bar
350
350
350
280
Ports P, A, B Internal control oil inlet
bar
280
Port T X Y
bar
250
Min. control oil pressure in "pilot stage"
bar
10
Qmax
L/min
170
450
900
1000
QN pilot valveΔp = 35 bar
L/min
4
12
24
24
Leakage of pilot valve at 100 bar
L/min
< 150
< 180
< 350
< 500
Leakage of main stage
L/min
<0.25
< 0.4
< 0.6
< 0.6
Static/Dynamic
Hysteresis
%
< 0.1 scarcely measurable
Manufacturing tolerance for Qmax
%
≦ 10
Response time for signal change(at X = 100 bar)
0...100 %
25
26
32
32
0...10 %
14
15
18
18
Response time for signal change(at X = 10 bar)
0...100 %
85
80
120
120
0...10 %
50
30
50
50
Switch-off behavior
After electrical switch-off: pilot valve in fail-safe. Main stage moves to spring-centered "mid position"