NEPTUN S.A. is the leading manufacturer of mechanical transmissions in Romania, equipped with modern technical and technological facilities, producing high-level, high-quality technological products.
The main ranges of mechanical transmissions currently manufactured at NEPTUN are:
Mechanical Transmission Applications
The specific working conditions of machinery in the surface coal mining industry—characterized by high and variable dynamic torques, low output speeds, heavy shocks, outdoor operation in environments with coal dust and moisture, as well as installation in confined spaces and inclined positions—require the design of compact, rigid, and highly reliable gear units.
To meet these requirements, Neptun gear units feature high-rigidity welded casings, bevel gears with case-hardened and ground curved teeth, cylindrical gears with case-hardened and ground teeth, appropriately sized bearings, and an optimized lubrication system.
Neptun offers a full range of special gear units, both newly manufactured and refurbished, used on all types of machinery in coal quarries. These specially designed gear units are found on all equipment used in surface coal mining operations.
In coal-fired power plants, driving complex machinery for the storage, preparation, and handling of coal for combustion, as well as for the removal and transport of ash, requires high-performance speed reducers. Neptun’s portfolio is comprehensive and designed to meet the most demanding customer requirements.
For the operation of industrial valves installed on water, air, gas, and live steam circuits, as well as in complex automation loops, we provide advanced electric actuators for precise opening, closing, and regulation.
Neptun’s portfolio covers the entire operating range—including torques, speeds, strokes, and operating times—offering high-quality, operationally safe products in a wide variety of configurations to suit any industrial need.
The specific operating conditions of metallurgical machinery—characterized by high power, variable loads, and significant static and dynamic forces—require robust, precision-engineered mechanical transmissions.
Beyond our standard product range, we offer a vast selection of special and custom-made mechanical transmissions, specifically engineered to drive a wide variety of heavy-duty metallurgical equipment.
The mechanical transmissions manufactured by Neptun are utilized in:
- Rolling mill drives
- Walking beam conveyor drives for sheet metal
- Rolling mill stands
- Overhead traveling crane drives
- Rolling mill roll adjustment mechanisms
- Screw lifting mechanisms
- Various customized industrial drives
Complex machinery and installations in chemical and petrochemical plants require high-performance mechanical transmissions and electric valve actuators. In most cases, these are custom-engineered solutions, specifically designed to meet the rigorous requirements of the technological lines in which they are integrated.
NEPTUN products are utilized across a variety of critical drives, including:
- Agitators and mixers
- Centrifuges
- Forced-draft cooling tower fans
- Industrial valves for shut-off, opening, and regulation
A central focus of our offering is the provision of high-quality spare parts for existing equipment, ensuring the long-term reliability and operational continuity of your installations.
Due to the unique demands of the cement industry, a diverse range of high-performance mechanical transmissions is required to drive the machinery across all manufacturing processes.
Our offering includes a comprehensive selection of standard units—such as cylindrical, helical-bevel, worm, and helical-worm gearboxes, as well as screw pumps and electric screw pump sets—alongside specialized, custom-made gearboxes for medium and high-power applications, all engineered for maximum reliability.
NEPTUN products are trusted to drive essential equipment, including:
- Conveyor belts in sorting stations
- Limestone crushers
- Clinker grinding mills
- Slag dryers
- Gypsum and slag conveyors
- Packaging machinery
Thanks to their superior technical performance and consistent reliability, NEPTUN products remain a preferred choice for professionals throughout the cement industry.
Hypoid bevel gear units for tram motor bogie drives have undergone significant advancements. Through the implementation of a new bearing system and a high-performance hypoid bevel gear set—manufactured using state-of-the-art technology—we have considerably increased the durability and service life of these units.
The core components of our tram bogie gear units are crafted on high-precision CNC machinery using pre-set tooling. To ensure superior mechanical properties, case-hardening and quenching heat treatments are performed on a sophisticated IVA (Germany) treatment line, fully managed by an automated process computer.
Quality and safety are at the heart of our process: every product undergoes rigorous testing on a specially designed stand, operating under both nominal and peak overload conditions to guarantee performance in real-world environments.
NEPTUN specializes in the manufacturing of gear units for both single-motor and twin-motor bogies, providing reliable solutions for modern urban transport systems.
Equipment for oil extraction using progressive cavity pumps (PCP) stands as one of NEPTUN’s most high-performance product lines. Since the development of our surface drive units in 1992, they have consistently demonstrated exceptional operational safety and reliability, successfully equipping approximately 2,000 wells to date.
Driven by our commitment to meeting evolving industry needs, we have continuously diversified and refined our equipment. Today, we offer advanced drive units with axial load capacities of up to 9 tons, specifically engineered to operate efficiently in wells at depths reaching 2,000 meters.
NEPTUN currently provides a comprehensive range of oil extraction solutions leveraging the latest progressive cavity pump technology. Additionally, for the efficient transport of crude oil within oil fields, our portfolio includes high-performance screw pumps featuring rubber-lined stators.
Driving various agricultural machines—where motion is derived from the tractor’s power take-off (PTO)—requires speed multipliers or reducers that combine a compact, rigid design with high operational durability. These units are typically independent subassemblies featuring cast housings and precision-engineered, high-performance gearing.
NEPTUN manufactures a comprehensive range of speed reducers and multipliers, specifically designed for:
- Soil preparation machinery
- Plant and crop treatment equipment
- Harvesting, picking, and fodder distribution machinery
- Auxiliary service equipment
- General-purpose agricultural machinery
Additionally, for irrigation systems, NEPTUN provides specialized drive solutions, including primary worm-geared motor units and gearboxes engineered specifically for driving travel wheels.
