Explore our top-tier slewing bearings and gearless rotational solutions designed to withstand extreme overturning moments and precision requirements of modern solar tracking systems.
The company is located in Huangtu Town, Jiangyin City, Jiangsu Province, with highly convenient logistics and transport access. Leveraging mature technical parameters and state-of-the-art tooling, we rely on exquisite forging, heat treatment, and precision finishing processes. We specialize in providing high-load-bearing, high-strength, and long-life rotational and transmission solutions across wind/solar tracking, industrial robotics, warehouse automation, construction machinery, and heavy port equipment.
Equipped with advanced multi-axis CNC machines and testing laboratories, Manchen ensures every slewing drive and bearing undergoes strict quality control. From raw material spectrum testing to dynamic load simulation, we back our manufacturing with total quality assurance and a collaborative business philosophy of "quality first, mutual cooperation".
As the global transition toward renewable energy accelerates, Concentrated Solar Power (CSP) has emerged as a cornerstone technology for base-load clean energy. Unlike traditional photovoltaic (PV) systems, CSP plants use mirrors (heliostats) to focus sunlight onto a central receiver. This focused thermal energy runs steam turbines to generate electricity, often integrated with molten salt thermal storage to supply power even after the sun sets. The efficiency of this power generation method relies entirely on the tracking accuracy of the heliostats. With arrays spanning several square kilometers in harsh desert environments, the mechanical demand on dual-axis solar trackers is immense.
Heliostat solar tracking requires micro-radian precision. Even a fraction of a degree in tracking error can cause the reflected beam to miss the central tower receiver, leading to massive energy loss. Jiangsu Manchen Transmission Technology Co., Ltd. addresses this industrial challenge by engineering high-performance single-row, double-row, and cross-roller slewing bearings. These bearings serve as the critical mechanical joint of the tracker, supporting the heavy structure of the mirrors, resisting high overturning moments caused by strong desert winds, and executing smooth, micro-step adjustments throughout the day.
The global CSP market is undergoing a massive expansion. Major projects in the Middle East (such as the DEWA project in Dubai), North Africa (Noor Ouarzazate), and the expansive deserts of Western China represent the vanguard of solar thermal engineering. These geographical locations present extreme operational conditions: daytime temperatures exceeding 50°C, nighttime temperatures dropping below freezing, fine abrasive sandstorms, and periodic gale-force winds. Standard bearings fail quickly under such conditions due to dust ingress, lubrication breakdown, or material fatigue.
To operate reliably for 25 to 30 years without catastrophic failure, CSP trackers require components built with high-grade sealing, corrosion-resistant coatings, and high-stiffness geometries. The industrial trend has shifted toward integrated, gearless, low-backlash slewing designs that minimize mechanical play. Because heliostat arrays contain thousands of individual units, developers require components that balance high precision with cost-effective manufacturing. Jiangsu Manchen supports global engineering, procurement, and construction (EPC) companies by manufacturing customized slewing bearings that handle extreme axial, radial, and overturning loads simultaneously.
Engineered to guide heavy solar mirrors with precise azimuth and elevation control, ensuring optimal light concentration on tower systems.
High torsional rigidity slewing drives support heavy parabolic collectors along a single axis, resisting extreme crosswind loads.
Equipped with specialized polyurethane lip seals and synthetic grease to block sand, moisture, and dust in remote desert environments.
The engineering roadmap for solar tracking systems centers on two main goals: minimizing angular backlash and maximizing overturning moment resistance. In a CSP field, wind loads create a large cantilever effect on the tracker structure. This structural load is transmitted directly to the slewing bearing. If the bearing lacks sufficient structural stiffness, it will flex, causing gear wear and misaligning the tracking angle.
Jiangsu Manchen utilizes advanced Finite Element Analysis (FEA) to simulate and optimize bearing geometries under complex combined load configurations. By utilizing high-strength steel forgings (such as 50Mn or 42CrMo) and induction hardening the raceways to precise depths (typically 55-62 HRC), we ensure our slewing rings maintain structural integrity under extreme stress. Our design options include:
Take a look inside Jiangsu Manchen's precision machining, heat treatment, and final inspection facilities in Jiangyin City, Jiangsu Province.
We adhere strictly to international quality standards to ensure our products perform reliably in demanding clean energy applications.
From raw material selection to final testing, our structured manufacturing process ensures high precision and reliable performance for every batch of slewing bearings.
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For utility-scale solar projects, on-site mechanical failure is costly. When a single solar tracker breaks down, it affects the power output of that block. Repairing tracker components in remote desert locations requires specialized labor and equipment. Jiangsu Manchen addresses this operational risk by integrating premium materials and testing into our manufacturing process.
Our bearings are designed to meet diverse regional and environmental challenges:
Additionally, we maintain a complete documentation trail for every production batch. From raw steel ladle analyses to hardness mapping and final runout measurements, we supply comprehensive test reports (MTRs) to assist project developers and EPCs during the engineering audit process.
The solar energy industry is moving toward larger heliostats and longer parabolic troughs to reduce the number of tracking systems needed per megawatt. This trend increases the physical size of individual trackers, placing higher structural loads on the underlying mechanical joints. Next-generation slewing systems must handle higher wind shear, larger torque loads, and support automated operations.
Jiangsu Manchen is actively developing low-backlash and zero-backlash slewing solutions to meet these requirements. By using precision-ground raceways and matched ball sets, we reduce play to a minimum. This enables trackers to maintain targeting accuracy under gusty conditions, preventing the tracking system from drifting. In addition, we are researching smart slewing bearings equipped with integrated wear and temperature sensors. These sensors will collect operational data in real-time, enabling predictive maintenance schedules and reducing the need for manual inspections.
Find technical answers regarding load limits, environment ratings, backlash control, and installation guidelines for solar slewing drives.
Our bearings are engineered to handle high overturning moments, depending on the raceway diameter and contact design. For example, our Double-Row Four-Point Contact Ball Bearings and Single-Row Cross-Roller Bearings can be customized to withstand tilting moments ranging from 10 kNm to over 300 kNm, matching the load requirements of large dual-axis heliostat trackers.
We use precision grinding processes on the internal raceways and select matched ball or roller diameters. This controlled assembly process helps minimize internal radial and axial play, allowing us to supply low-backlash bearings down to ≤0.05° to ensure precise solar tracking alignment.
We install double-lip nitrile rubber (NBR) or polyurethane seals on both sides of the bearing assembly. These seals prevent dust and sand ingress while retaining the internal synthetic lubrication, protecting the bearing in arid, desert-like conditions.
Yes. Jiangsu Manchen specializes in custom design and manufacturing. Our engineering team can work from your structural drawings, load parameters, and installation space limits to design, model, and manufacture a compatible slewing solution.
We primarily use 50Mn and 42CrMo carbon and alloy steel forgings. These materials are chosen for their response to induction hardening, fatigue resistance, and overall structural durability. All raw materials are tested for chemistry and structural integrity before entering the production line.
Our slewing bearings are designed for a service life of 25 to 30 years under typical solar field operating conditions. This durability is achieved through proper seal selection, induction-hardened raceways, and regular, scheduled lubrication maintenance.
Explore our full line of internal gear, external gear, and gearless cross-roller support systems built for heavy industrial and renewable energy tracking applications.
Partner with Jiangsu Manchen Transmission Technology Co., Ltd. for custom design, engineering, and manufacturing support tailored to your requirements.
Manchen Transmission