Woodward King combines precision engineering with premium materials to serve demanding mechanical and control applications. This overview explains how the design principles behind Woodward King components translate into reliable performance across industrial and commercial systems.
Manufacturers position Woodward King products as solutions where accurate speed control, robust construction, and long service life are essential requirements. The following sections detail core functionality, application scenarios, and decision criteria for selecting and maintaining these systems.
| Model | Operating Principle | Key Applications | Typical Environment |
|---|---|---|---|
| WK-200 Series | Hydrostatic pilot operation | Mobile hydraulics, compact machinery | -20 to 70°C, dusty conditions |
| WK-500 Series | Electromechanical feedback | Process controls, heavy equipment | -10 to 80°C, clean plant air |
| WK-700 Series | Advanced digital control | Automated lines, test stands | 0 to 60°C, climate-controlled |
| WK-900 Series | Integrated safety logic | Critical machinery, mining | -30 to 85°C, high shock environments |
Core Hydraulic Control Mechanisms
Woodward King designs rely on precise hydraulics to translate pilot signals into robust mechanical motion. Understanding these mechanisms helps operators diagnose issues and optimize setup parameters.
Each unit uses balanced piston stages and calibrated orifices to minimize hysteresis and ensure consistent response under varying loads. Pressure compensators maintain stable control even when supply conditions fluctuate during peak demand cycles.
Actuation Stages and Feedback Loops
Stage-based actuation combines initial pilot movement with secondary force amplification, enabling fine control over large valves and clutches. Integrated feedback elements allow real-time adjustment and reduce overshoot during rapid load changes.
Industrial Applications and Use Cases
Woodward King units are deployed where strict speed and torque regulation is required across diverse sectors. Engineers select models based on load inertia, cycle frequency, and environmental exposure.
Mobile equipment benefits from compact WK-200 designs that fit tight spaces without sacrificing reliability. Process industries leverage WK-500 and WK-700 families for smooth ramping and precise hold modes in continuous production lines.
Performance Specifications and Testing
Key specifications include pressure range, flow coefficient, temperature limits, and dynamic response figures. Standardized testing protocols verify that each model meets defined safety margins and lifecycle expectations.
| Specification | WK-200 Series | WK-500 Series | WK-700 Series | WK-900 Series |
|---|---|---|---|---|
| Pressure Range (bar) | 50–300 | 100–500 | 150–700 | 200–1000 |
| Temperature Range (°C) | -20 to 70 | -10 to 80 | 0 to 60 | -30 to 85 |
| Response Time (ms) | 120–200 | 80–140 | 40–80 | 30–60 |
| Safety Rating | Basic A | PLd | SIL 2 | SIL 3 |
Maintenance routines should include oil analysis, periodic calibration, and verification of safety interlocks. Keeping detailed service records supports predictive maintenance and simplifies root cause analysis when deviations occur.
Selection and Long-Term Value
Choosing the right Woodward King model requires balancing performance specs, lifecycle costs, and operational risks. Making informed decisions up front delivers higher uptime and lower total ownership costs.
- Match model specifications to system pressure, flow, and temperature ranges
- Verify compatibility with existing controls and safety architectures
- Plan installation layouts with adequate strain relief and filtration
- Implement scheduled maintenance and condition-based monitoring
- Document settings and configurations for rapid troubleshooting
FAQ
Reader questions
How does the WK-500 Series maintain stable control under variable supply pressure?
It uses pressure compensators and pilot-stage feedback to regulate force independently from supply fluctuations, ensuring consistent valve response.
What environments are suitable for the WK-200 Series in mobile applications?
The WK-200 Series performs reliably in dusty, temperature-variable conditions common to mobile hydraulics when proper filtration and cooling are provided.
Can the WK-700 Series be integrated with digital control platforms?
Yes, it features electro-mechanical feedback and communication options that allow direct interfacing with PLCs and supervisory control systems.
What safety certifications apply to the WK-900 Series for critical machinery?
The WK-900 Series meets SIL 3 requirements and relevant functional safety standards, making it suitable for equipment where failure must be minimized.