Concentrated Solar Power (CSP) systems integrated with Molten Salt Thermal Energy Storage (TES) represent a monumental leap toward continuous, dispatchable renewable energy. Unlike traditional photovoltaic (PV) setups, a molten salt solar power plant utilizes thousands of dual-axis tracking mirrors—known as heliostats or parabolic troughs—to focus sunlight onto a central receiver. In a tower configuration, the heat-transfer fluid (liquid nitrate salt mixture) is pumped to the receiver where it is heated up to 565°C and stored in insulated thermal tanks. This stored heat is later used to generate superheated steam, driving conventional turbines to produce electricity on demand, even long after sunset.
For these systems to operate with optimum thermodynamic efficiency, tracking accuracy must be maintained within sub-milliradian ranges. This demands exceptionally precise rotational drives. The continuous azimuth and elevation tracking mechanisms of modern heliostats rely heavily on high-rigidity single-row/double-row cross-roller slewing bearings and integrated horizontal rotary drives. Because these components are exposed to harsh desert environments, high wind gusts, thermal variations, and sand storms, their design and metallurgical integrity are paramount.
Heliostat Tracking Accuracy Requirement
Molten Salt Operational Temperature Limit
Expected Plant Lifetime in Extreme Climates
Dynamic Load Traceability & Safety Compliance
Established in 2022, Jiangsu Manchen Transmission Technology Co., Ltd. is a professional manufacturing enterprise integrating design, research and development, manufacturing, and sales. Located in Huangtu Town, Jiangyin City, Jiangsu Province, our facility benefits from exceptionally convenient transportation links and access to China's premier industrial cluster.
Relying on exquisite forging, state-of-the-art heat treatment, and precision CNC processing techniques, we provide high-load-bearing, high-strength, and long-life transmission solutions. Our products are widely deployed in construction machinery, medical equipment, intelligent warehousing, the photovoltaic/CSP industry, port machinery, industrial robots, and environmental protection equipment. With advanced testing equipment and a complete quality control system, our manufacturing processes guarantee complete traceability from raw material selection to final delivery, ensuring compliance with both domestic and international industry standards.
The global transition toward carbon neutrality has repositioned concentrated solar power as a critical base-load asset. Regions with high Direct Normal Irradiance (DNI), including the Middle East and North Africa (MENA), Western United States, Northern Chile, Southern Europe, and Northwestern China, are rapidly scaling molten salt tower projects.
Unlike traditional solar PV, which suffers from intermittency issues and relies on expensive, short-lived lithium-ion battery banks, molten salt energy storage systems can hold thermal capacity for 8 to 15 hours. The mechanical challenge shifts from electrical storage to structural reliability. A typical 100MW tower plant utilizes over 10,000 heliostats, each requiring a heavy-duty rotary drive unit that must withstand constant positioning adjustments and extreme radial/axial load forces. As global capacity grows, demand for high-integrity ODM mechanical components like internal-gear cross-roller bearings and horizontal rotary drive devices has spiked.
Operating a molten salt power plant demands that every tracking component resists high overturning moments, abrasive dust particles, and intense ultraviolet radiation. The core technical requirements include:
Heliostat mirrors act as giant sails. Sudden wind gusts create massive bending moments. Our gearless L-type and cross-roller slewing bearings are engineered with optimized internal geometry to absorb these complex multi-directional loads without structural deformation.
Fine dust and sand particles pose a critical threat to internal rolling paths. Jiangsu Manchen implements multi-lip polyurethane and synthetic rubber seals to keep contaminants out, retaining specialized high-performance grease designed for temperature swings.
Backlash in the rotary system translates directly to focus misalignment at the receiver tower. By utilizing precision-ground internal/external gears and cross-roller layouts, we minimize mechanical play, maintaining sub-milliradian positioning accuracy.
CSP technology requires localized adaptation based on geographical challenges:
Characterized by severe diurnal temperature fluctuations (ranging from -40°C to +50°C) and thin air with intense UV index. Transmission systems require customized low-temperature grease and UV-stabilized sealants to prevent hardening and degradation.
High humidity combined with ambient salts accelerates structural oxidation. In these scenarios, ODM manufacturers must utilize Dacromet coating, zinc thermal spraying, or nickel-plated coatings to extend service life and prevent corrosion-induced fatigue.
Sudden mechanical shifts can damage internal ball tracks. The application of double-row equal-diameter four-point contact ball swivel bearings provides balanced axial, radial, and moment load sharing, ensuring stability and safety during seismic events.
We can provide customized design and technical support according to customer needs, helping partners achieve efficient and stable equipment operation. We are based on integrity and aim to build a century-old enterprise, emphasizing technological and management innovation. Below is our rigorous manufacturing process:
The company has always adhered to the business philosophy of "quality first, mutual cooperation and win-win", providing high-quality services and reliable products to both new and existing customers. Our state-of-the-art testing equipment verifies dimensional tolerances, hardness depths, and raw material chemical compositions.
Partnering with an established Chinese manufacturer like Jiangsu Manchen Transmission offers significant strategic advantages. Jiangyin City, situated within the Yangtze River Delta economic zone, represents one of the most mature metallurgy and engineering clusters globally. This concentration of raw material suppliers, forging houses, specialized heat-treatment facilities, and logistics centers enables us to deliver highly customized components with shorter lead times and optimized cost structures.
Our supply chain model emphasizes structural resilience through vertical integration. From sourcing specialized 42CrMo or 50Mn raw steel to executing precision rough machining, induction ring hardening, and final assembly, every process remains under strict, traceable control. This protects project pipelines from material shortages and pricing spikes, ensuring that utility-scale CSP installations remain on schedule.
In addition, we have established long-term cooperative relationships with many well-known domestic enterprises. With stable quality and complete after-sales services, we have won wide recognition in the market. In the future, the company will continue to focus on technological upgrading in the transmission field, and strive to provide global customers with higher-quality and more cost-effective rotary transmission products and services.
Manchen Transmission
