NARA turning gears serve equipment requiring very low speed and very high torque, such as marine engines, large compressors, turbine generators and steelmaking equipment.
FEYANA supplies products of NARA Autosys (Korea), a power-transmission manufacturer founded in 1977 in Busan and certified to ISO 9001, ISO 14001 and ISO 45001.
Product range
| Series / model | Description |
|---|---|
| NRT (marine engines) | Up to 225,400 Nm, ~1 rpm, ratio 1,200 – 1,880:1, electromagnetic brake |
| NRWT | 23,000 Nm, ~1 rpm, ratio 1,450:1, electromagnetic brake |
| NRBT | 2,800 Nm, ~6.8 rpm, ratio 255.8:1, electromagnetic brake |
| NRMT | 5,000 Nm, ~2.1 rpm, ratio 714:1, electromagnetic brake |
| NRTS (compressors) | 10,650 Nm, ~12.6 rpm, ratio 115 – 140:1, electromagnetic brake; e.g. on the synchronous motor of a 10,000 kW-class compressor |
| For generators / turbines | Slow rotation of gas turbine, steam turbine and generator rotors |
| For steelmaking | Rotating molten-metal vessels: torpedo cars, ladles, BOF, EAF charging |
Key features
- Marine engines: turns the flywheel during installation, ensures lubrication before maintenance / start; compatible with MAN and WinGD engine models (per NARA)
- Compressors: low-speed rotation in assembly, testing and maintenance to prevent shaft deformation
- Turbine generators: prevents rotor bow after hot shutdown, checks lubrication and bearings before start, fine positioning during disassembly
- Steelmaking: controlled-speed rotation of molten-metal vessels for pouring and slag control
Applications
- Large and medium marine engines
- Large compressors
- Gas turbines, steam turbines, generators
- Torpedo cars, ladles, BOF, EAF
Selection & quotation
Data summarised from NARA documentation and subject to change by the manufacturer. Send FEYANA your power, torque, speed, mounting and duty conditions for a model recommendation. Price: on request.
Model selection & quotation: Zalo/Hotline +84 988 641 591 · WhatsApp +84 988 641 591 · Email sales.00@feyana.com
FAQ
Who is NARA Autosys?
NARA Autosys is a Korean power-transmission manufacturer founded in 1977 in Busan, certified to ISO 9001, ISO 14001 and ISO 45001.
What data is needed to select the NARA Turning Gear?
Power or torque, speed, connection and mounting, application and duty conditions.
What is the price?
Quoted by model and configuration: sales.00@feyana.com or WhatsApp +84 988 641 591.






Reviews
There are no reviews yet.