Description
WOODWARD (JAPAN) CO., LTD.
SAWAMURA ELECTRIC INDUSTRY CO., LTD.
TYPE: SMM40
DC PERMANENT MAGNET MOTOR
P/N: 1765-825
IP44 5W 110V AC 50/60HZ
AMPS: 0.3A
SAFE TORQ: 0.2N
CLASS B
3 R/MIN.
The Woodward SMM40 is a DC permanent magnet motor manufactured in association with Sawamura Electric Industry Co., Ltd. under the Woodward Japan programme. Operating at a rated 5W with a 110V AC 50/60Hz supply and drawing just 0.3A, this compact motor delivers a safe torque output of 0.2N at a governed speed of 3 R/MIN. Designed to IP44 ingress protection and insulated to Class B thermal rating, it serves as a precision actuation element within marine control systems — typically driving governor feedback mechanisms, valve positioners, or control actuator assemblies where low-speed, controlled rotary output is essential to reliable engine or auxiliary machinery management.
Key Features
✓ DC permanent magnet motor with rated output of 5W, supply voltage 110V AC 50/60Hz, current draw 0.3A, safe torque 0.2N, and output speed of 3 R/MIN — as specified on the original nameplate.
✓ IP44 enclosure protection rating provides resistance to solid particle ingress and water splashing from any direction, suitable for engine room and machinery control environments.
✓ Class B insulation rating confirms the motor is built to withstand continuous operating temperatures consistent with marine machinery spaces and control panel installations.
✓ Compact permanent magnet design offers stable low-speed torque output with minimal electromagnetic complexity, making it well suited for integration into Woodward governor and actuator control assemblies — subject to system compatibility confirmation.
✓ Direct replacement consideration for Woodward SMM40 installations; engineers should verify nameplate data, mounting configuration, and connector interface against the existing installation prior to fitment.
Marine Applications
✓ Main engine governor actuator systems where low-speed, precise rotary output is required for fuel control or speed regulation feedback loops.
✓ Auxiliary engine control panels utilising Woodward governor systems, where the SMM40 motor provides the mechanical drive element for control response.
✓ Valve positioning and actuator drive applications within engine room automation and control systems on commercial and offshore vessels.
✓ Integrated bridge and machinery automation platforms requiring compact, reliable DC motor elements within closed-loop control architectures.
✓ Retrofit and overhaul projects on vessels running legacy Woodward control systems, where like-for-like motor replacement is necessary to restore system function.
Why Marine Engineers Choose
The Woodward SMM40 permanent magnet motor is a purpose-built component combining a compact form factor with defined torque and speed characteristics. Its IP44 rating and Class B insulation make it a dependable choice for the demanding thermal and environmental conditions of marine machinery control installations, and its alignment with Woodward governor system architecture ensures straightforward integration where original equipment is being maintained or restored.
Ideal For
Merchant vessels, offshore support vessels, platform supply vessels, tankers, bulk carriers, and any commercial or industrial marine application operating Woodward governor or actuator control systems requiring SMM40 motor replacement or spare holding.
Technical Support & Compliance
Technical assistance is available to support remote troubleshooting, onboard diagnostics, system integration, and commissioning verification for this component within its wider control system context. Repair, retrofit, and upgrade support can also be discussed depending on the scope of work required. To confirm compatibility and suitability for your specific installation — subject to confirmation — please provide nameplate photographs, the original part number, any associated system drawings or wiring diagrams, the governor or control system model and software version where applicable, and your vessel name, IMO number, and a description of the intended application scope.
