Description
NABTESCO
EAR-120
GOVERNOR ACTUATOR
EAR-120-RK01
69113
VIGOSERVE
TYPE: UP60C 81-BRO
The Nabtesco EAR-120 is a governor actuator designed to provide precise, responsive control of engine speed within marine control systems. Acting as the mechanical interface between the governing electronics and the fuel injection or throttle mechanism, it translates control signals into accurate physical output, maintaining stable engine performance under varying load conditions. Components of this type are critical to propulsion reliability and are commonly integrated into automated engine management arrangements onboard commercial and industrial vessels.
Key Features
✓ Functions as a governor actuator, converting control signals into mechanical movement to regulate engine fuel delivery and maintain target speed.
✓ Referenced under part number EAR-120-RK01 with type designation UP60C 81-BRO; additional voltage, stroke, and response specifications are subject to confirmation based on configuration.
✓ Designed for integration within Nabtesco Vigoserve governor control systems; compatibility with specific panels or controllers should be verified against the vessel’s existing configuration.
✓ Typically installed within the engine room in close proximity to the main or auxiliary engine governor assembly; mounting arrangement and environmental rating are subject to confirmation.
✓ A direct replacement for worn or failed actuator units, restoring governor responsiveness and protecting against engine overspeed or speed instability during operation.
Marine Applications
✓ Main engine speed governing on merchant vessels, including bulk carriers, tankers, and general cargo ships.
✓ Auxiliary engine and generator set control systems where stable frequency and speed regulation are required.
✓ Offshore support vessels and platform supply vessels relying on precise engine management for dynamic positioning support systems.
✓ Fishing vessels and workboats where consistent engine response under variable load is essential for operational safety.
✓ Ferry and ro-ro vessel propulsion systems requiring reliable automated governor control across repeated duty cycles.
Why Marine Engineers Choose
Nabtesco governor actuators are a recognised component within professional marine engine control arrangements, valued for their integration with Vigoserve system architecture and their role in maintaining accurate, stable engine speed under demanding onboard conditions.
Ideal For
Commercial cargo vessels, offshore support craft, ferries, fishing vessels, and any vessel operating Nabtesco Vigoserve governor control systems on main or auxiliary engines.
Technical Support
Technical support is available for the Nabtesco EAR-120 governor actuator and associated marine control system components. Assistance covers onboard installation guidance, actuator repair, and remote troubleshooting to help minimise downtime.







