Product Description
The DC70025-003-112 rotary actuator is part of the DYNA 70025 series developed by Woodward for direct integration with Stanadyne “D” series rotary fuel injection pumps. This actuator replaces the original pump cover and provides precise rotational positioning to regulate fuel delivery in mechanically governed diesel engines.
Designed as a fully enclosed electromechanical unit, it eliminates external linkages and minimizes wear points, improving long-term reliability in demanding environments such as off-highway equipment and generator sets.
Technical Specifications
- Model: DC70025-003-112
- Series: DYNA 70025
- Supply Voltage: 12 VDC
- Operating Current: Typically 1.5–3.5 A (load dependent)
- Actuation Type: Rotary, proportional multi-turn output
- Control Signal: PWM / analog position control (controller dependent)
- Mounting: Direct replacement of Stanadyne pump top cover
- Compatible Pumps: DB, DB2, DB4, JDB, DC, DM2, DM4
- Housing: Fully sealed, fuel-resistant enclosure
- Environmental Protection: IP67 equivalent (dust-tight, moisture resistant)
- Operating Temperature: -40°C to +85°C
- Mechanical Interface: Integrated shaft coupling (no external linkage required)
- Manufacturing Origin: USA (Woodward) / OEM-authorized production (QCC)
Key Features
- Integrated design eliminates external mechanical linkages and alignment issues
- Sealed actuator housing protects against fuel contamination and harsh conditions
- Stable and repeatable fuel control for improved engine response
- Direct retrofit installation without internal pump modification
- Compatible with a wide range of Stanadyne D-series injection pumps
Application Scenarios
- Industrial diesel engines for pumps and compressors
- Agricultural machinery with rotary fuel systems
- Marine auxiliary engines
- Diesel generator sets requiring consistent fuel metering
FAQ
What is the main function of the actuator? It converts electrical control signals into rotary motion to adjust the fuel metering mechanism inside the injection pump.
Is it necessary to modify the fuel pump during installation? No. The unit is designed as a direct replacement for the pump lid, requiring no internal changes.
Can this actuator operate in harsh environments? Yes. Its sealed construction and wide temperature range allow reliable operation in dusty, humid, and vibration-prone conditions.
Is it compatible with electronic governors? Yes. It is commonly used with external electronic controllers to achieve precise engine speed regulation.
