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Founded in 1991, Ningbo Sunrun Bicycle Co., ltd & Its branch company Ningbo Tongkin Technology Co., Ltd.

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OEM/ODM Bicycle Hub
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Ningbo Tongkin Technology Co., Ltd.
About SunRun

Ningbo Dongjin Technology Co., Ltd is China OEM Bicycle Hub Supplier and ODM Bicycle Hub company was founded in 1991, specializing in the production of bicycle transmission systems, braking systems and other components. The leading products include a series of derailleurs, variable speed flywheels, high-end cassette hubs, disc brakes, brake components, cranksets and more than 300 varieties in six categories.

In 2015, in response to Made in China 2025, the company established Ningbo Dongjin Technology Co., Ltd. to develop a new internal and external variable speed transmission system, entering the first echelon of the domestic industry. "Chicheng wheel industry, quality first" is the pursuit of quality by Richeng people. The company has introduced internationally advanced key technologies such as precision cold forging, CNC machining, heat treatment, and multi-station stamping to develop transmissions with Richeng characteristics. , transmission kit, sales volume leads domestic peers. The registered brands SUNRUN, TONGKEEN and HEMU enjoy high reputation in domestic and foreign markets. The company has independent export rights, and its products are exported to Europe, North America, Central and South America, Africa, Southeast Asia and other countries and regions. Xu Mingqiang, chairman of the company, sincerely invites domestic and foreign merchants to come for negotiation and guidance.

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Industry Knowledge Extension

How does the material of the Bicycle Hub relate to maintenance requirements?

There is indeed a close connection between the Bicycle Hub's materials and maintenance needs. The material of the Hub not only affects its performance, but is also directly related to the ease and frequency of maintenance. Choosing the appropriate Hub material can reduce maintenance costs and improve the riding experience while ensuring performance.
First of all, there are differences in corrosion resistance between Bicycle Hubs made of different materials. Some metal materials such as steel are prone to rust in humid environments, which not only affects the appearance of the Hub, but may also affect its performance. Some high-grade materials such as stainless steel or titanium alloy have excellent corrosion resistance and can maintain their original performance for a long time even in harsh riding environments. Therefore, choosing materials with good corrosion resistance can reduce the need for maintenance due to rust.
Secondly, the hardness and wear resistance of the material also affect the maintenance needs of the Bicycle Hub. Materials with higher hardness can resist friction and wear during riding, extending the service life of the Hub. Materials with good wear resistance can reduce wear particles caused by friction and keep the interior of the Hub clean and smooth. This means choosing materials with excellent hardness and wear resistance can reduce the need for maintenance due to wear, such as replacing bearings or parts.
In addition, some advanced materials such as carbon fiber also have self-cleaning properties. The surface of these materials is not easy to adhere to dirt and grease, allowing the Hub to automatically repel impurities during riding and keep the interior clean. This not only reduces the frequency of cleaning the Hub, but also reduces the risk of failure due to impurity buildup.
However, it’s worth noting that premium materials often come with higher costs. When cyclists choose hub materials, they need to consider factors such as performance, maintenance needs, and budget. For cyclists with a limited budget, it is also a good choice to choose some cost-effective materials such as aluminum alloy or ordinary steel.
Therefore, there is a close relationship between the material of the Bicycle Hub and its maintenance needs. Choosing materials that are corrosion-resistant, wear-resistant and easy to maintain can reduce maintenance costs and improve the riding experience. Cyclists should weigh the advantages and disadvantages of different materials based on their own needs and budget, and choose the Bicycle Hub material that best suits them.