WK-HYDRAULIC
WK servo valve SFZ141
Servo Valve Cross Reference List
| WK P/N | MOOG P/N |
| SFL218 Series | MOOG 760/761 Series |
| SFL218A Series | MOOG G631 Series |
| SFL218B Series | MOOG 06 Series And P&T EL-T76.00.MO |
| SFL214、216 Series | MOOG 072 Series |
| SFL212A Series | MOOG 30 Series |
| SFL212/B Series | MOOG 31 Series |
| SFZ141 Series | MOOG D633 Series |
| SFZ142 Series | MOOG D634 Series |
| SFL317 Series | MOOG 792 Series |
| SFL316 Series | MOOG 791 Series |
| SFD234 Series | MOOG D661 Series |
SFZ141 Direct Drive Electro-hydraulic Flow Control Servo Valve
Performance indices
|
Item |
Unit |
Index |
|
| Supply pressure Ps |
MPa |
2～28 |
|
|
Rated supply pressure Pn |
MPa |
21 |
|
|
Rated flow Qn() |
L/min |
20 |
|
| Rated current In |
mA |
10 |
|
| Hysteresis |
% |
≤0.2 |
|
| Threshold |
% |
0.3 |
|
| Nonlinearity |
% |
≤±7.5 |
|
| Unsymmetry |
% |
≤±7.5 |
|
| Pressure GAIN |
% |
＞30 |
|
| Internal leakage |
L/min |
≤1.5 |
|
| Null bias |
% |
≤±1.5 |
|
|
Frequency response |
Amplitude ratio with (-3dB) |
Hz |
≥30 |
|
Phase lag with (-90°) |
Hz |
≥50 |
|
| Working temperature |
℃ |
-15～100 |
|
| Weight |
kg |
≈1.2 |
|
Electrical interface
Overall and installation dimensions
Overall dimensions
Installation dimensions
*Requirement: Flatness less than 0.01mm, roughness below .
| P | A | B | T | Y | F1 | F2 | F3 | F4 | G | |
| ф7.5 | ф7.5 | ф7.5 | ф7.5 | ф3.5 | M5 | M5 | M5 | M5 | ф2 | |
| x | 21.5 | 12.7 | 30.2 | 21.5 | 40.5 | 0 | 40.5 | 40.5 | 0 | 33 |
| y | 25.9 | 15.5 | 15.5 | 5.1 | 9 | 0 | -0.75 | 31.75 | 31 | 31.75 |
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