Explore our premium grade slewing bearings, gears, and horizontal rotary drives designed specifically for demanding tracking and load-bearing applications.
The global transition towards high-capacity renewable energy systems has placed concentrated solar power (CSP)—especially solar thermal power tower systems—at the center of energy planning. Unlike traditional photovoltaic (PV) grids that suffer from intermittency, solar thermal tower configurations leverage a massive field of dual-axis tracking mirrors, known as heliostats, to focus sunlight onto a central receiver atop a tower. This process generates high-temperature thermal energy that can be stored in molten salt systems for uninterrupted power generation, even after sunset.
For modern CSP developers, maximizing tracking accuracy is the single most critical factor in achieving lower Levelized Cost of Energy (LCOE). Even a fraction of a degree in deviation can throw off the concentrated beam over a distance of 1,000 meters, leading to substantial efficiency losses or receiver damage. Consequently, utility-scale solar thermal towers demand advanced heavy-duty, high-backlash control slewing drives and bearing solutions that can reliably maintain focal points under immense atmospheric loads.
Engineering, Procurement, and Construction (EPC) companies involved in designing solar power tower structures prioritize mechanical integrity and consistency over everything else. In typical heliostat fields, thousands of individual reflector assemblies are exposed to high wind pressures and sudden temperature fluctuations. The primary demands from procurement teams revolve around:
Minimizing play within the gear train ensures wind gusts do not cause positioning errors or micro-shocks that weaken structural brackets.
Custom polyurethane seals and synthetic low-evaporation greases prevent microscopic desert sand particles from infiltrating bearing raceways.
As heliostat sizes range from 10 m² to over 100 m², standard catalogues fall short. Custom gear ratios, shaft sizes, and mounting hole configurations are vital.
In response to these demands, ODM manufacturers have transition from simple suppliers to core technology partners. By offering end-to-end simulation engineering, finite element analysis (FEA) of bearing stress profiles, and customized structural solutions, leading partners ensure that the power tower tracking network operates seamlessly for decades.
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 logistical transport channels.
We possess mature technical conditions and advanced equipment. Relying on exquisite forging, heat treatment, and precision processing techniques, we provide high-load-bearing, high-strength, and long-life transmission solutions for construction machinery, medical equipment, intelligent warehousing, the photovoltaic industry, port machinery, industrial robots, environmental protection equipment, and other fields.
Equipped with advanced testing equipment and a complete quality control system, our products feature full traceability from raw material selection to final product delivery, meeting both domestic and international industry standards. The company always adheres to the business philosophy of "quality first, mutual cooperation", providing high-quality services and reliable products to new and old customers.
Our state-of-the-art production workflow guarantees high structural strength and precise dimensional tolerances required for dual-axis solar trackers.
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Operating a modernized facility in Jiangsu allows us to integrate raw material procurement directly with high-capacity steel mills. The localized engineering ecosystem offers unparalleled agility. We reduce product turnaround times through synchronized heat treatment and finishing processes, while enforcing rigorous ultrasonic testing to locate internal material anomalies before fabrication. This ensures that every gear we ship stands up to the extreme requirements of global projects.
Our ISO-certified systems guarantee absolute traceability and consistency across high-volume OEM/ODM manufacturing batches.
In power tower layouts, heliostats typically rely on one of two key layouts: independent azimuth-elevation dual-drive units, or highly centralized tracking bearings integrated with hydraulic linkages. For maximum reliability, azimuth rotation is handled by internal or external gear slewing drives. Below, we examine the structural differences and advantages of these bearing designs.
Single-row four-point contact ball slewing bearings utilize two raceways where balls make contact at four distinct points. This construction delivers exceptional radial, axial, and tilting moment capacity. In contrast, cross-roller bearings feature alternating cylindrical rollers oriented at right angles to one another. Cross-roller assemblies offer greater structural stiffness and minimal axial play, making them the preferred selection for ultra-precise micro-heliostat arrays where backlash must be kept below 0.2 mrad.
Integrating an internal gear layout directly into the slewing bearing inner ring allows the drive motor pinions to be shielded inside the tracker enclosure. This layout limits particulate collection on the teeth. Machined internal gears undergo induction hardening on the tooth flanks, increasing wear life and allowing high continuous operation under tracking states. External gear models, on the other hand, facilitate easier cleaning and maintenance for installations located in damp coastal regions.
Our engineering services enable customers to request precise mechanical features, such as tailored lubrication pathways, customized tooth profiles (such as ground teeth with low backlash profiles), and special low-temperature seals. These custom details ensure your tracking structures continue to operate correctly during long solar campaigns.
Different solar thermal power plant locations experience distinct climatic loads. Below are the localizations we provide.
Challenges: Airborne dust, high diurnal temperature swings (-20°C to +55°C), and low ambient lubrication retention.
Solution: Equipped with dual-lip synthetic fluororubber seals, customized synthetic low-viscosity greases, and enclosed internal-gear housing configurations to eliminate dust ingress.
Challenges: Constant salt-spray fog causing rapid surface corrosion and galvanic reactions between metal parts.
Solution: Applied with advanced Dacromet coating or hot-dip galvanization on unground surfaces, along with marine-grade anti-corrosive painting schemes satisfying C5-M ISO standards.
Challenges: Low temperature brittleness leading to cracked structures and seized bearings during winter nights.
Solution: Manufactured from special impact-resistant alloy structural steels (like 42CrMo4) with specialized low-temperature tempering processes to retain high toughness down to -40°C.
Get answers to common technical, design, and procurement questions regarding heliostat drive mechanics.
Select from our complete range of single-row, double-row, and three-row high-performance rotary solutions.
Jiangsu Manchen Transmission Technology Co., Ltd. has established long-term partnerships with leading domestic and international enterprises. With stable quality and complete after-sales support, we continue to receive strong recognition across global industrial networks.
Looking ahead, we will focus on technological upgrades in the rotary transmission field. We strive to provide global customers with higher-quality, cost-effective, and highly reliable rotary solutions designed for utility-scale solar projects and heavy-duty industrial installations.
Manchen Transmission
