Description
WOODWARD GOVERNOR (JAPAN) LTD.
SAWAMURA DENKI KOGYO
TYPE: SMM40
GOVERNOR SPEED ADJUSTING MOTOR
P/N: 1766-523
VOLTS: 24V DC
AMPS: 0.15 A SPD: 2
SAFE TORQ: 0.2 N.M
The Woodward SMM40 Governor Speed Adjusting Motor is a precision actuator motor designed to control engine speed setpoints within Woodward governor systems. Operating at 24V DC and drawing 0.15A, this compact motor adjusts the speed reference input on mechanical and electronic governors, enabling accurate and responsive engine speed regulation. As a critical component within the Marine Control System, it directly influences propulsion stability, load management, and fuel efficiency — making reliable operation essential for safe vessel manoeuvring and machinery performance.
Key Features
✓ Rated 24V DC with a current draw of 0.15A and a safe torque output of 0.2 N.m, providing controlled, low-power actuation suited to governor speed adjustment duties.
✓ Manufactured by Sawamura Denki Kogyo for Woodward Governor (Japan) Ltd., ensuring compatibility with Woodward governor platforms where this motor type is specified.
✓ Designed for integration within Woodward governor speed control circuits; system and panel compatibility should be confirmed against vessel-specific governor model and configuration.
✓ Compact motor format suitable for installation within engine control consoles or governor housing assemblies; exact mounting arrangement subject to confirmation based on application.
✓ Direct replacement component for governor speed adjusting functions; correct identification via nameplate and part number 1766-523 is essential prior to installation or ordering.
Marine Applications
✓ Main engine governor systems on merchant vessels requiring precise speed reference adjustment during manoeuvring and sea passage operations.
✓ Auxiliary engine and generator governor control circuits where stable speed regulation is critical to vessel power management and load sharing.
✓ Diesel-mechanical propulsion plants fitted with Woodward governors across tankers, bulk carriers, container ships, and offshore support vessels.
✓ Engine control room governor panels and remote speed adjustment stations where motorised setpoint control is required.
✓ Retrofit and overhaul projects involving ageing Woodward governor assemblies where the original speed adjusting motor requires direct replacement.
Why Marine Engineers Choose
The Woodward SMM40 is a purpose-built, OEM-specified motor from a globally recognised name in governor technology. Its defined electrical ratings and torque specification make it a reliable choice for restoring accurate speed control functionality within Woodward governor systems, reducing downtime and supporting consistent engine performance.
Ideal For
Merchant vessels, offshore support vessels, fishing vessels, and workboats fitted with Woodward governor systems; suitable for fleet operators, vessel managers, and engineering teams carrying out planned maintenance or emergency repairs on main or auxiliary engine control systems.
Technical Support & Compliance
Remote technical guidance, onboard commissioning support, and integration assistance are available to help engineers confirm correct fitment and restore governor system functionality. Repair and retrofit evaluation can be provided subject to inspection. To confirm compatibility, buyers are advised to share nameplate photographs, the governor model and version, any available system drawings or wiring diagrams, the vessel name and IMO number, and the full scope of the replacement or upgrade project. All compatibility assessments are subject to confirmation based on the information provided.
