ADU-120-R
NABCO (Nabtesco)
Refurbished
| Manufacturer | NABCO (Nabtesco Corporation, Japan) |
| Model | ADU-120-R |
| Product Type | Actuator Drive Unit (ADU) – "MG-800 GOVERNOR SYSTEM ACTUATOR DRIVE UNIT" |
| System | NABCO MG-800 electronic governor for marine main engines |
| Part / Serial Number | Not clearly visible in the supplied photograph |
| Power Rating | Not clearly visible in the supplied photograph |
| Country of Manufacture | Not clearly visible in the supplied photograph (manufacturer is Japanese) |
| Condition | Refurbished (subject to confirmation) |
| Supplier | SM MARINE SERVICE™, Chattogram, Bangladesh |
The NABCO ADU-120-R is the actuator drive unit of the NABCO MG-800 electronic governor system. It receives the control signal from the MG-800 control unit and drives the governor actuator that moves the fuel rack of the main engine. SM MARINE SERVICE™ (https://www.smmarineservice.com/) supplies NABCO governor and remote control spare parts worldwide.
The MG-800 is NABCO's electronic governor for two-stroke main engines, approved by MAN Diesel and Wärtsilä Switzerland. The system consists of a control unit with touch panel, an actuator, an actuator drive unit (ADU) and a pulse generator on the engine. The ADU-120-R is the power drive box between the control unit and the actuator. The supplied unit is a grey steel box with four captive cover screws, NABCO badge, caution label and the labels "ADU-120-R" and "MG-800 GOVERNOR SYSTEM ACTUATOR DRIVE UNIT".
NABCO ADU-120-R actuator drive unit for MG-800 governor – SM MARINE SERVICE™
| Model | ADU-120-R |
| Function | Actuator drive unit for MG-800 governor |
| Matching Actuator | MG-800 actuators: EAR-20, EAR-120, EAR-500A, EAR-1000A (match with ADU-120-R Not verified) |
| Actuator Stroke | Max. 42° (MG-800 actuators) |
| Supply Voltage | Not clearly visible in the supplied photograph |
| Enclosure | Steel box with screwed cover |
NABCO does not publish the PCB list of the ADU-120-R, and the photo shows only the closed cover. Board numbers are Not verified – send photos of the boards for exact matching.
Drives the actuator motor according to the control unit command. PCB number: Not verified.
Supplies the drive electronics from the ship's power. PCB number: Not verified.
Connects control unit, actuator and feedback signals. PCB number: Not verified.
Label close-up: ADU-120-R – MG-800 Governor System Actuator Drive Unit
Safety notes: stop the engine and isolate power before opening the ADU. Governor work affects engine safety – follow the NABCO manual and the ship's procedures.
SM MARINE SERVICE™ supplies the NABCO ADU-120-R and MG-800 parts; availability subject to confirmation. Please send the nameplate photo, PCB photos, engine type, vessel name / IMO and delivery port. We ship worldwide by courier and air freight.
The MG-800 governor is installed on many Japanese-built and other ships. A same-type ADU avoids changing the governor system.
1. What is the ADU-120-R?
The actuator drive unit of the NABCO MG-800 governor system.
2. Which engines use MG-800?
Two-stroke main engines; the system is approved by MAN Diesel and Wärtsilä Switzerland.
3. Which actuators belong to MG-800?
EAR-20, EAR-120, EAR-500A and EAR-1000A.
4. Does the ADU-120-R contain PCBs?
Yes, drive and power electronics; PCB numbers are not public – send board photos.
5. Who makes NABCO?
Nabtesco Corporation, Japan.
6. Can you supply the MG-800 control unit too?
Yes, on request.
7. What information do you need for a quote?
Nameplate photo, vessel name / IMO and delivery port.
8. Do you ship worldwide?
Yes.
The NABCO ADU-120-R is the actuator drive unit of the NABCO MG-800 electronic governor system used on marine two-stroke main engines. It receives commands from the MG-800 control unit and drives the governor actuator (EAR series) that sets the engine fuel rack. The MG-800 system is approved by MAN Diesel and Wärtsilä Switzerland and offers overspeed prevention, automatic PID selection, high gain mode and fuel limit functions. The unit is housed in a robust steel enclosure for engine room installation. SM MARINE SERVICE™ supplies refurbished NABCO ADU-120-R units and MG-800 governor spare parts worldwide.
SM MARINE SERVICE™ – Marine Automation & Navigation Equipment Supplier
Available Equipment Conditions: New • Used • Refurbished • Reconditioned (Specific product condition and availability are subject to confirmation.)
Stock Locations: Bangladesh • China
Services: Worldwide Shipping • Technical Support • Spare Parts Supply • Marine Equipment Sourcing
Samir Market, DT Road, Pahartali, beside CDA Market, Chattogram, Bangladesh
Mobile / WhatsApp / Viber: +88 01818 929292
Email: info@smmarineservice.com
Website: https://www.smmarineservice.com/
Contact SM MARINE SERVICE™ today for a quotation on the NABCO ADU-120-R and MG-800 governor spare parts.
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