Permanent Magnet Assembly – Coupling Product Introduction
As a professional permanent magnet manufacturing enterprise, Hangzhou Magnet Power Technology Co., Ltd. (CJL) has been deeply engaged in the R&D and production of permanent magnet materials for many years. Relying on precise control of the core performance of permanent magnets and deep technical accumulation, CJL has extended and developed a series of permanent magnet assembly products covering diverse application scenarios. As a core transmission product in CJL’s permanent magnet assembly series, the coupling leverages the company’s inherent advantages in permanent magnet materials to achieve dual breakthroughs in transmission performance and application value. It is designed specifically to solve transmission pain points in industrial scenarios and precisely meets the core needs of various industries for efficient, stable, and safe transmission.
I. CJL’s Advantages in Permanent Magnet Manufacturing
With permanent magnet manufacturing as its core business, CJL has built a fully self-controlled production system covering the entire process from permanent magnet material formula R&D, billet preparation, to precision machining of finished magnets, laying a solid foundation for the excellent performance of magnetic couplings. As an experienced enterprise in permanent magnet manufacturing, CJL’s core advantages run through the full life cycle of magnetic-assembly products.
1. Core Technical Advantages
CJL has focused on permanent magnet material R&D and manufacturing for many years and has formed a technical team led by permanent magnet material experts. It has achieved multiple technical results in key areas such as rare-earth permanent magnet formula optimization, sintering process upgrades, and magnetic performance improvement. The high-performance permanent magnets independently developed by the company can achieve a maximum energy product of 52–57 MGOe and coercivity ≥ 1350 kA/m. In high-temperature environments (≤ 120°C), the magnetic performance attenuation rate is ≤ 3% per 1,000 hours, exceeding the standards of ordinary permanent magnets in the industry. In addition, CJL has 550°C high-temperature-resistant samarium-cobalt permanent magnets designed specifically for high-temperature couplings.
The core transmission unit of the magnetic-assembly coupling is built on such high-performance permanent magnets. Through precise magnetic circuit design, the magnetic energy of the permanent magnets is efficiently converted into transmitted torque, ensuring excellent torque transmission capability and long-term stability. To date, CJL has accumulated dozens of patents related to permanent magnets and magnetic assemblies, and has led or participated in the formulation of multiple technical specifications for the permanent magnet industry. Its core technical strength is widely recognized in the industry.
2. Full-Chain Production Assurance
Relying on its permanent magnet manufacturing strengths, CJL achieves full-chain production control from permanent magnet raw material procurement and processing to final assembly of the magnetic-assembly coupling.
Raw materials: The company has established long-term strategic partnerships with leading enterprises in core rare-earth production regions, and precisely selects high-purity rare-earth raw materials to ensure the basic performance of permanent magnets from the source.
Production: Advanced processes such as precision grinding and laser cutting are adopted to control permanent magnet dimensional accuracy within ±0.05 mm. A full-process quality inspection system is established to perform 100% inspection of magnetic performance, dimensional accuracy, and appearance quality.
Assembly: Through automated assembly equipment and 3D magnetic circuit simulation calibration technology, the installation accuracy and magnetic-circuit matching of permanent magnets in the coupling are ensured, ultimately guaranteeing performance consistency and operational stability for each magnetic-assembly coupling.
3. All-Scenario Adaptation Experience
With years of permanent magnet manufacturing experience, CJL’s permanent magnet products have been widely applied in multiple high-end fields such as new energy, chemical engineering, medical, and aerospace, serving more than 2,000 customers, and accumulating rich experience in application adaptation across different scenarios. Based on a deep understanding of working-condition characteristics in various industries (such as high temperature, high pressure, strong corrosion, high dust, etc.), CJL can accurately determine the core requirements for permanent magnet magnetic performance and protection level under different scenarios, and empower the development and design of magnetic couplings with this experience. For transmission needs in different industries, CJL customizes permanent magnet selection, magnetic circuit structure, and protection design, enabling the coupling to perfectly adapt to diverse and complex working conditions, demonstrating full-scenario adaptation capability from permanent magnet manufacturing to magnetic-assembly applications.
II. Advantages of the Magnetic-Assembly Coupling Product
As an important product in CJL’s permanent magnet assembly series, the coupling is always guided by the core needs of customers’ transmission scenarios. Relying on CJL’s high-quality permanent magnet manufacturing advantages, it targets and solves pain points of traditional transmission equipment, providing customers with a transmission solution that is “efficient, energy-saving, safe, and worry-free”.
1. Core Transmission Performance
The core transmission unit of the CJL magnetic-assembly coupling uses high-performance permanent magnets produced in-house. It achieves non-contact torque transmission through the magnetic coupling principle of opposite poles attracting each other, fundamentally addressing the pain points of traditional mechanical couplings such as severe friction and wear and frequent lubrication and maintenance.
Rated torque: covers the full range of 0.5 N·m to 500 N·m
Operating temperature: within 500°C
Matching & safety factor: permanent magnet specifications and magnetic circuit design can be precisely matched according to customer load characteristics, with a reserved safety factor of 1.2–1.5×, effectively avoiding demagnetization due to overload and ensuring transmission stability
Efficiency: by optimizing permanent magnet arrangement and air-gap design, transmission efficiency can reach up to 98%; compared with traditional couplings, energy consumption is reduced by 15%–30%, significantly saving customers’ energy costs over long-term use
Alignment tolerance: the non-contact structure greatly lowers alignment requirements, with alignment error compensation range ≤ ±0.2 mm, significantly reducing installation difficulty and later maintenance workload
2. Full Working-Condition Customized Adaptation
Based on rich experience in scenario-based adaptation of permanent magnets, CJL provides customized solutions for magnetic couplings under complex working conditions in different industries.
Extreme temperature: high-temperature-resistant permanent magnet materials are selected and paired with auxiliary water-cooling/air-cooling systems, enabling stable operation in environments from -60°C to 500°C
Strong corrosion: permanent magnets adopt multi-layer passivation + coating protection; the coupling housing and isolation sleeve use corrosion-resistant materials such as Hastelloy and titanium alloy; protection level can reach IP68
Precision transmission scenarios (e.g., medical equipment, electronic manufacturing): through refined magnetic circuit design and high-precision machining, the speed fluctuation coefficient is controlled within ≤ 0.5%, ensuring transmission accuracy
At present, this product has been successfully applied in multiple scenarios such as chemical reactor vessels (zero-leakage transmission), new energy vehicle cooling systems, precision machine tools, and medical MRI equipment.
3. Full Lifecycle Service
Starting from export customer needs, CJL provides a full-process export-adaptation service of “precise selection guidance – customized production – remote technical support – global warranty assurance”.
Selection stage: a professional technical team precisely matches permanent magnet specifications and coupling models based on customer parameters such as load, speed, and working conditions, and provides optional optimization solutions
Operation & maintenance stage: remote technical response service is provided, with online guidance to quickly resolve customer questions during use
Warranty & lifespan: the warranty period exceeds industry standards; under normal working conditions, service life can reach more than 15,000 hours; global warranty and after-sales service are provided, greatly reducing customer equipment replacement and maintenance costs
As a professional permanent magnet manufacturing enterprise, CJL always takes high-quality permanent magnets as the core to empower innovation and upgrading of its magnetic-assembly product series. With excellent transmission performance, diverse scenario adaptation capabilities, and complete service assurance, CJL magnetic couplings have become a preferred solution for efficient transmission in various industries. Choosing CJL magnetic couplings is not only choosing a high-performance transmission product, but also choosing a professional partner backed by deep permanent magnet technology accumulation.
