Description
WOODWARD GOVERNOR (JAPAN) LTD.
SAWAMURA DENKI KOGYO CO., LTD.
TYPE: SMM40
GOVERNOR SPEED ADJUSTING MOTOR
P/N: 1765-825
VOLTS: 110V AC 50/60HZ SPD: 3
AMPS: 0.3A SAFE TORQ: 0.2 N.M
The Woodward SMM40 Governor Speed Adjusting Motor (Part No. 1765-825) is a precision electromechanical actuator designed to regulate engine speed within marine governor control systems. Operating at 110V AC across 50/60 Hz frequencies, this compact motor interfaces directly with Woodward governor assemblies to deliver accurate, responsive speed corrections during vessel operation. As a critical component within the Marine Control System category, it plays a fundamental role in maintaining stable engine RPM under varying load conditions — directly influencing propulsion reliability, fuel efficiency, and onboard safety.
Key Features
✓ Precision speed adjustment function with a rated safe torque output of 0.2 N·m, ensuring controlled and repeatable governor actuation without mechanical overload.
✓ Electrical ratings of 110V AC, 50/60 Hz, 0.3A provide compatibility with standard shipboard single-phase AC supplies; speed setting 3 as per manufacturer designation.
✓ Designed for integration with Woodward governor systems as manufactured by Sawamura Denki Kogyo Co., Ltd. under the Woodward Governor (Japan) Ltd. arrangement; system compatibility subject to confirmation against specific governor model and control panel configuration.
✓ Suitable for installation in engine control rooms or governor panel enclosures; mounting orientation and environmental protection class should be confirmed against vessel-specific installation drawings.
✓ Replacement of this motor requires careful alignment with the governor linkage assembly; commissioning and calibration after installation are recommended to ensure correct speed response characteristics.
Marine Applications
✓ Main engine speed governing systems aboard cargo vessels, tankers, and bulk carriers where stable RPM control is critical to safe navigation and manoeuvring.
✓ Auxiliary engine governor control on offshore support vessels, platform supply vessels, and research ships requiring precise frequency and load management.
✓ Diesel generator set governor assemblies on ferries, RoRo vessels, and passenger ships where consistent electrical frequency output is operationally essential.
✓ Engine control room panels on tugs and workboats where rapid speed response during towing or dynamic positioning operations is required.
✓ Retrofit and overhaul projects on aging tonnage where original Woodward governor motor components require like-for-like replacement to restore system performance.
Why Marine Engineers Choose
Marine engineers specify the Woodward SMM40 speed adjusting motor because it is a manufacturer-designated component built to exacting tolerances for governor applications, offering reliable actuation performance and direct compatibility with established Woodward control architecture — minimising integration risk and downtime during maintenance or emergency replacement.
Ideal For
Cargo vessels, tankers, bulk carriers, offshore support vessels, ferries, passenger ships, tugs, workboats, and any commercial or industrial marine vessel operating Woodward governor-based engine speed control systems.
Technical Support & Compliance
Remote technical guidance, onboard troubleshooting support, installation advice, and post-replacement commissioning assistance are available for this component, subject to confirmation of the specific governor model and vessel configuration. Repair, calibration, and system integration services can be discussed depending on scope and location. To confirm full compatibility and suitability, buyers are encouraged to share nameplate photographs, the complete part number, relevant governor assembly drawings, the specific Woodward governor model and firmware or control panel version where applicable, and vessel name, IMO number, and intended installation scope. All compatibility assessments are subject to confirmation based on documentation provided.
