H10E Rotary Direct-Drive Servo Valve
3 week ago
Product details
H10E Rotary Direct-Drive Servo Valve
Product Overview
H10E Rotary Direct-Drive Servo Valve (RDDV) is a large-flow high-performance model of rotary direct-drive servo valve series. It adopts limited-angle rotary torque motor with eccentric conversion mechanism, converting rotary motion into linear spool displacement. High-precision built-in spool position closed-loop feedback enables continuous, stable and precise flow adjustment.
Different from traditional two-stage flapper-nozzle servo valves, no pilot oil supply is needed. Designed for medium and large flow precision control scenarios, it serves as a reliable domestic alternative to imported high-flow servo valves, with remarkable anti-contamination performance and outstanding long-term operating stability.
H10E Rotary Direct-Drive Servo Valve is a heavy-duty rotary direct-drive electro-hydraulic Hydraulic valve. It can be matched as high-performance Excavator Spare Parts and core precision control component for large-flow high-end hydraulic system. Distinguished from linear spool servo valves, this Hydraulic valve features unique rotary direct-drive structure without a separate pilot oil supply. It adjusts the rotation angle of the internal valve element according to electrical signals, precisely modulating the flow rate and direction of hydraulic fluid. It significantly improves dynamic response and control stability of the hydraulic system. When adopted as Excavator Spare Parts, it provides sensitive and steady operation control for large excavator working devices.
Key Technical Specifications
- Maximum working pressure: 315 bar (P/A/B ports); Return port pressure ≤100 bar
- Rated flow (@ΔP=35bar): 40 / 60 / 80 L/min
- Frequency response: ≥75 Hz
- Hysteresis: ＜0.3%
- Threshold: ＜0.1%
- Supply voltage: 24 VDC
- Optional command signal: ±10 V, ±10 mA, 4~20 mA
- Operating fluid temperature: -20℃ ~ +85℃
- Recommended hydraulic oil cleanliness: NAS 8 or higher
- Standard large-size servo valve mounting interface
Working Principle
The integrated controller receives analog or digital command signals and drives the rotary torque motor to swing within a limited angle. The eccentric transmission unit converts rotational motion into linear displacement of the main spool. The built-in position sensor transmits real-time spool position data back to the controller to form closed-loop regulation. The valve continuously changes the throttling area to adjust flow direction and flow rate, realizing high-precision control of position, speed, force and pressure of hydraulic actuators.
Core Advantages
1. Rotary direct-drive structure, independent of pilot oil, simplifying hydraulic piping design
2. Without vulnerable nozzle-flapper assembly, greatly improved anti-pollution capability and reduced maintenance frequency
3. Optimized flow channel design, supporting larger rated flow under compact overall dimensions
4. Consistent dynamic performance under variable inlet pressure, excellent working stability
5. Ultra-low hysteresis and high resolution, superior static and dynamic control precision
6. Integrated drive circuit, supports on-site electrical zero adjustment and boasts strong EMC anti-interference performance
7. Standardized installation flange and electrical interface, easy replacement of imported equivalent servo valves
8. Multiple customization options: sealing materials, spool overlap and connector types
Typical Application Fields
- Large aerospace simulation test platforms
- Heavy-duty material testing equipment and comprehensive hydraulic test benches
- Metallurgical rolling mill control, strip deviation correction systems
- Large precision hydraulic presses and forming machinery
- Wind power main drive and pitch control systems
- Special engineering equipment and large automation production lines
- Shipborne electro-hydraulic closed-loop control systems
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Ningbo Hengnuo Hydraulic Drive Co.,Ltd
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4 year
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