Explore our premium range of external, internal, and gearless rotary bearings engineered for Concentrated Solar Power (CSP) systems and solar trackers.
Unlike typical photovoltaic systems, Concentrated Solar Power (CSP) plants rely on focusing sunlight onto a small focal area to generate heat, which is then used to drive a conventional steam turbine. For CSP technologies (such as Tower, Parabolic Trough, and Linear Fresnel systems), tracking precision is not just an efficiency metric—it is the core operational requirement.
To capture the Direct Normal Irradiation (DNI) effectively, heliostats and parabolic collectors must track the sun continuously throughout the day with accuracies measured in milliradians. Any minor structural deflection or tracking backlash results in a significant deviation of light at the central receiver, leading to loss of energy harvesting efficiency and potential thermal shock risks on the absorber pipe or receiver panels.
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 company benefits from a highly integrated industrial supply chain and convenient logistics networks. With mature technical conditions and advanced production equipment, we rely on exquisite forging, heat treatment, and precision processing techniques to provide heavy-load, high-strength, and long-life transmission solutions.
Our catalog is optimized for fields requiring extreme structural integrity: construction machinery, medical equipment, intelligent warehousing, the photovoltaic and CSP solar industry, port machinery, industrial robots, and environmental protection equipment. Equipped with advanced testing equipment and a complete quality control system, our products feature full traceability from raw material selection to final delivery, ensuring alignment with both domestic and international industry standards.
Concentrated Solar Power is experiencing a global renaissance due to its integrated thermal energy storage (TES) capacity, enabling base-load dispatchable green electricity.
Large-scale solar tower projects across China, Spain, the MENA region, and the southwestern United States are utilizing tens of thousands of individual heliostats. These heliostats demand robust rotary mechanisms to endure constant wind gusts without yielding alignment precision.
CSP facilities are situated in desert belts characterized by high DNI, extreme diurnal temperature variations (-10°C to +50°C), abrasive sandstorms, and periodic gale-force winds. The sealing, lubrication, and metallurgical integrity of the slewing bearings are critical points of failure.
Angular backlash within the drive gear meshes must be kept below 0.05° (0.87 mrad) or tighter in advanced setups. Excessive backlash results in tracking oscillations, reducing direct heat flux onto central absorbers and accelerating wear on the gear teeth.
Chinese manufacturing is no longer defined by labor arbitrage; it is driven by technological integration and complete upstream-downstream ecosystems. At Jiangsu Manchen, this environment allows us to optimize manufacturing cycles while maintaining rigorous product quality standards.
Our facility leverages localized resources for forging, heat treatment, and finish-grinding. By housing key processes within the Jiangsu industrial belt, we dramatically reduce cycle times for custom ODM designs. Furthermore, our raw material supply chains for high-grade alloy steel (such as 42CrMo and 50Mn) are secured via partnerships with certified domestic mills, ensuring complete chemical and mechanical property tracking for every batch.
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.
We provide customized designs and technical support tailored to client specifications, facilitating efficient and reliable equipment operation. Below is our standard manufacturing workflow, detailing the lifecycle of our slewing drives.
We base our growth on integrity and build relationships to ensure long-term equipment operations. Our emphasis on technological innovation enables custom configurations matching localized engineering designs.
How our heavy-duty rotary gearboxes and swivel bearings are deployed on-site to resolve regional and geographic structural challenges.
In high-altitude deserts (such as the Gobi Desert or Atacama), arrays of thousands of heliostat mirrors reflect light to a central tower. Our double-row four-point contact ball swivel bearings manage high tilting torque, keeping the reflected beam locked on the receiver target even under high wind conditions.
Linear collectors focus sunlight on an absorber tube along the focal line. The tracking drive rotates long assemblies of parabolic mirrors. The requirement is high torsion resistance and slow rotational speed without stick-slip vibration. Our internal gear slewing bearings provide stable output torque profiles.
LFR arrays utilize flat or slightly curved mirror segments tracking the sun. Because these mirrors are closer to ground level, they are highly susceptible to dust and sand accumulation. Our IP66-rated sealed housing drives prevent dust ingress from damaging the internal gear train and rolling elements.
The concentrated solar industry is scaling up heliostat surfaces to reduce total actuator count, increasing the torque requirements per tracking drive.
1. Dual-Axis Tracking Innovations: Dual-axis slewing drives, which combine azimuth and elevation gears into a single housing, are becoming standard for compact tower plants. This layout simplifies structural integration and reduces installation labor costs.
2. Smart Sensors and Closed-Loop Control: Future systems are integrating IoT load sensors into the slewing bearings to detect wind-shear stresses in real time, automatically positioning collectors to a safe stowage angle during wind events.
3. Low-Maintenance Materials: Developers are seeking long-life greases and self-lubricating seal components to minimize maintenance windows over the plant's operating life.
Find answers to common engineering questions regarding the specification and application of slewing bearings in concentrated solar environments.
Internal gear configurations protect the mating teeth from environmental dust and offer a compact envelope, making them suitable for high-durability tower heliostats. External gear bearings provide simpler access for maintenance and allow larger pinion sizes, which is advantageous for high-torque systems. Gearless bearings are used when using hydraulic or indirect drive systems, or when the drive pinion is integrated into an external system.
Raw materials like 50Mn or 42CrMo carbon alloy steel provide the core hardness and tensile strength needed to resist deformation under high wind loads. Quenching and tempered steel rings provide a tough core that absorbs impacts, while induction hardening of the raceway prevents premature pitting and fatigue. Manchen ensures full material tractability from receipt of raw materials to shipment.
Through finish-grinding of the rolling paths and precision hobbing of the internal or external teeth. We also control gear-to-pinion tooth clearances using customizable center-distance adjustments and high-precision envelope profiles (such as hour-glass worms or profile-ground helical teeth), preventing slop in tracking loops.
A double-row four-point contact ball configuration distributes loads along two rows of contact balls. This design provides high resistance to radial forces, axial forces, and tilting moments. It is suitable for large-aperture parabolic collectors or massive heliostats that generate high torque under gusty winds.
We utilize multi-lip nitrile rubber (NBR) or Viton sealing systems. These seals are resistant to UV radiation and ozone breakdown, maintaining a tight barrier against desert dust and rain. The seals are supported by a periodic grease purge that flushes out abrasive micro-particles.
Yes. Our engineering team designs slewing bearings based on the customer's calculations for axial load, radial load, tilting moment, and desired backlash profile. We construct 3D models and complete finite element analyses (FEA) to verify the design before starting raw material forging.
Examine our cross-roller, double-row, and L-type bearings, designed for heavy industrial rotation, photovoltaic trackers, and CSP installations.
Manchen Transmission