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

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Zn-Ni Alloy Single Speed Freewheel

FW-14T

Zn-Ni Alloy Single Speed Freewheel

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Ningbo Tongkin Technology Co., Ltd.

About SunRun

Ningbo Dongjin Technology Co., Ltd is China OEM Zn-Ni Alloy Single Speed Freewheel Supplier and ODM Zn-Ni Alloy Single Speed Freewheel 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

What tools and materials are needed to install the Single Speed Freewheel?

Installing the Single Speed Freewheel requires preparing a series of tools and materials to ensure a smooth installation process and a stable installation. The tools and materials required are detailed below and their role in the installation process is explained.
First, essential tools include wrenches, screwdrivers, and chain tools. The wrench is used to tighten the locking nut on the flywheel and rear axle to ensure that the flywheel is installed securely. The screwdriver is used to remove and install screws on the bicycle to install the flywheel. The chain tool is used to adjust the length and tension of the chain to ensure that the chain can run smoothly between the freewheel and sprocket.
In addition to tools, you also need to prepare some necessary materials. First up is the new Single Speed Freewheel, which is the centerpiece of the installation. Choose the right freewheel model and size based on your bike type and specifications, ensuring compatibility with the rear axle and chain. Additionally, lock nuts and washers are required, which are used to secure the flywheel to the rear axle and adjust the clearance between the flywheel and the chain. The locking nut should be selected to suit the diameter and thread type of the rear axle to ensure the tightening effect. The number and thickness of washers should be determined based on flywheel size and chain length to achieve optimal chain tension.
In addition, the chain is also an essential material during the installation process. Choose the appropriate chain length and type based on your bike's type and specifications. The chain should have good flexibility and wear resistance to ensure smooth riding and durability. During the installation process, you need to use a chain tool to thread the chain through the sprocket of the freewheel and rear wheel, and adjust its length and tension.
Finally, in order to improve the stability of the installation and reduce friction, some lubricating oil needs to be prepared. After installation is complete, apply an appropriate amount of lubricating oil to the flywheel bearing and rear axle to help reduce friction and wear and improve riding smoothness.
Therefore, installing the Single Speed Freewheel requires preparing necessary tools such as wrenches, screwdrivers, and chain tools, as well as materials such as a new flywheel, locking nuts, washers, chains, and lubricants. These tools and materials each play an important role during the installation process, and together ensure a stable flywheel installation and a smooth ride. By preparing complete tools and materials and following the correct installation steps, you can successfully complete the installation of Single Speed Freewheel and enjoy a pleasant riding experience.