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

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Cassette Sprocket Factory
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Cassette Sprocket Manufacturer

Cassette flywheel has the following features:
GOOD WEIGHT BALANCE: Cassette flywheel puts the centre of gravity at the centre by balancing the counterweights, so that the different parts can all move in a balanced way, thus effectively reducing the vibration and shaking during the movement of each part, and this design can make the user feel more comfortable, and it also helps to reduce the damages of the fitness equipment.
Smoother movement: Due to the balance of the cassette flywheel not only makes the movement more stable but also enables the user to use the fitness equipment more comfortably, it reduces bouncing and vibration, thus making the movement smoother and more comfortable.
Better longevity: Due to the balanced design of cassette flywheels, there is less stress on the movement of each component, which reduces wear and tear on the components and also results in a longer lifespan of the equipment, which is important for both commercial and home users as it extends the life of the equipment and reduces maintenance costs.
Overall, cassette flywheels are balanced, smooth and long lasting.
Ningbo Tongkin Technology Co., Ltd.
About SunRun

Ningbo Tongkin Technology Co., Ltd. is a China Cassette Sprocket Manufacturer and Cassette Sprocket Factory, 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.


Cassette Sprocket Industry knowledge

How does the Cassette Sprocket perform in durability tests, and how long does it last?

As a new type of transmission, Cassette Sprocket showed impressive performance in durability tests. After long-term, high-load continuous working tests, Cassette Sprocket has demonstrated excellent wear resistance and fatigue resistance.
The Cassette Sprocket is rigorously monitored and evaluated during durability testing. Testing includes long-term continuous work in a variety of different working environments to simulate various situations that may be encountered in actual use. Through these tests, we found that the Cassette Sprocket has minimal tooth surface wear, the transmission accuracy remains stable, and there are no obvious fatigue cracks or damage.
This outstanding durability is due to Cassette Sprocket's unique design and high-quality material selection. It is made of high-strength alloy materials and undergoes precision processing and heat treatment, giving it excellent mechanical properties and wear resistance. At the same time, the tooth shape and pitch of the Cassette Sprocket have been carefully optimized to reduce friction and impact during transmission and further extend the service life.
In practical applications, the service life of Cassette Sprocket is affected by many factors, including workload, working environment, lubrication conditions, and maintenance. Therefore, to accurately evaluate the service life of a Cassette Sprocket, these factors need to be considered. However, based on the results of the durability test, we can initially judge that the Cassette Sprocket has a long service life and can meet the needs of most work scenarios.
In addition, in order to extend the service life of Cassette Sprocket, users need to pay attention to the following points during use: first, maintain proper lubrication to reduce friction and wear; second, perform regular inspections and maintenance to detect and solve potential problems in time; finally , avoid overload operation and improper operation to avoid damage to the device.
As a result, Cassette Sprocket demonstrated excellent performance in durability tests and has a long service life. However, the specific service life needs to be evaluated based on actual usage conditions and maintenance. We believe that with the continuous advancement of technology and the accumulation of application experience, the durability of Cassette Sprocket will be further improved, bringing more possibilities to the field of transmission devices.