
3 S
E3 Servo cartridge valve Size 30, 50 & 63
General Technical Data
Valve type
3/3-way cartridge valve, sliding spool valve with position
control and integrated electronics, proportional-hydraulically
operated.
Mounting orientation Any (for best results avoid mounting along vibration axis)
Vibration (g) 30 (3 axes)
Ambient temperature range (°C) -20 to +60
Weight Size 30 Size 50 Size 63
Basic, without fail-safe sandwich plates (kg) 18 28 44
With fail-safe sandwich plate (kg) 21 31 47
Hydraulic Data
Max. operating pressure (bar)
main stage, ports P, A & T
210 (350 on request, special cavity required)
Max. operating pressure (bar)
pilot stage
350
Temperature range of hydraulic fluid (°C) -20 to +80
Viscosity range – recommended (mm²/s; cSt) 15 to 45
Viscosity range – max allowable (mm²/s; cSt) 5 to 400
Filtration of pilot stage D633 pilot valve
Recommended cleanliness class for
functional safety
< 18/15/12 (ISO 4406)
Recommended cleanliness class for
longer service life
< 17/14/11 (ISO 4406)
Filtration of main stage
Recommended cleanliness class for
functional safety
< 20/18/15 (ISO 4406)
Recommended cleanliness class for
longer service life
< 17/14/11 (ISO 4406)
Performance Size 30 Size 50 Size 63
Nominal flow at ∆p=5 bar
1
(l/min) 425 850 1185
Maximum permissible flow (l/min) 900 1800 2500
Stroke of main stage spool from center (mm) ±8 ±8 ±10
Spool displacement at full stroke (cm
3
) 1,2 3,3 4,8
Nominal flow of pilot at ∆p=35 bar
1
(l/min) 7,5 10 20
Max leakage of pilot when centered,
∆p
x
=180 bar (l/min)
0,4
Static / Dynamic
Hysteresis (%) < 0,2
Response time
100% Signal change at p
X
=180 bar (ms)
13 18 25
1)
Nominal flow per land / to calculate flow rate at a different ∆:ܳ
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=ܳ
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∆
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