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SKD Proportional two-stage directional control valves with the spool-type main stage, SK pilot stage and integrated electronics are throttling directional valves used in the systems to control force, velocity and travel of actuators.
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Description |
1 SKD
16.3.43 |
1 SKD
25.3.43 |
1 SKD
25.3.44 |
2 SKD
25.3.44 |
1 SKD
40.3.44 |
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SKD
design
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two-stage
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Number
of hydraulic lines
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3
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4
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Pilot
stage
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02 SK6 / 05 SK6
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01 SK10
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A, B,T , P ports diameter, mm
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16
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24
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38
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Max
stage inlet pressure, MPa:
on individual Ð and Õ lines: - main stage - pilot stage on connected Ð and Õ lines |
32 21 21 |
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Min
pilot stage inlet pressure,
MPa
|
4
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2.5
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2.5
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3
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1.5
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Max
stage outlet pressure, MPa:
for individual Ò and Y lines: - main stage - pilot for connected Ò and Y lines |
32 3 3 |
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Nominal
main stage flow
at Δð=1 MPa,
l/min
|
50
100 |
150
200 250 300 350 |
150
200 250 |
150
200 250 |
300
400 500 600 |
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Max
leak flow in the main stage neutral at Δð=21 MPa and spool and sleeve, l/min:
- À (<3% shutoff) - F (5% shutoff) - Â (10% shutoff) - Ñ (20% shutoff) |
1.5
1.0 0.5 0.4 |
2.5 - - - |
1.8 1.0 - - |
1.8 1.0 - - |
3.5 2 - - |
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Pilot
stage feeding Δð=16 MPa, l/min
|
10
|
45
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Spool
travel, mm:
- nominal - maximum |
±2.5 ±4 |
±3.5 ±5 |
±3.5 ±5 |
±3.5 ±5 |
±5 ±6 |
| Flow hysteresis, mA |
≤ 1
|
≤ 1.6
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Max
zero shift, %
|
1 | ||||
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Switching
time / Time of spool travel to the end point, ms:
- at Δð=5 MPa - at Δð=5 MPa |
25 - |
70 - |
70 - |
35 - |
- 70 |
| Working fluid | Mineral oil | ||||
| Working fluid temperature, ºÑ | 0...60 | ||||
| Working fluid viscosity at t=50ºÑ, cSt | 5...0 | ||||
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Working
fluid contamination class according to GOST
17216-2001
-recommended -permissible |
For
pilot stage:
02SK6 05 SK6 10 12 12 13 |
12 13 |
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| Nominal current range, ìÀ | 4÷20/ ±20 | ||||
| Integrated electronics supply voltage, V | ±15/ =18.36/ ~12.24 | ||||
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Peak-to-peak
supply voltage ripple ±15V, V
± 15V = 18.36 ~ 12.24 |
≤ 0.15
not rated
not rated |
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| Power consumption, W | ≤ 6 | ||||
| Mounting position | optional | ||||
| Weight, kg | 18 | 38 | 42 | 45 | 125 |
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