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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 MTB Bike Double Chainwheel & Crank Set
Home / Products / Chainwheel & Crank Set / MTB Bike Double Chainwheel & Crank Set
MTB Bike Double Chainwheel & Crank Set
WING-2021-G1 (22T-36T)

MTB Bike Double Chainwheel & Crank Set

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Ningbo Tongkin Technology Co., Ltd.
About SunRun

Ningbo Dongjin Technology Co., Ltd is China OEM MTB Bike Double Chainwheel & Crank Set Supplier and ODM MTB Bike Double Chainwheel & Crank Set 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 are the maintenance points for the multi-speed sprocket and crankset of the MTB Bike Double Chainwheel & Crank Set?

Maintenance and maintenance of the multi-speed sprocket and crankset of the MTB Bike Double Chainwheel & Crank Set are important steps to ensure the performance and extend the service life of your mountain bike. Here are the key points about its care and maintenance:
1. Regular cleaning:
After every ride, especially after riding in muddy or dusty conditions, use a clean cloth or brush to remove mud and dirt from the sprocket, chain, and crank.
Use a specialized bike cleaner to remove oil and stubborn stains more effectively.
2. Lubricate the chain:
Regularly adding an appropriate amount of lubricating oil to the chain can reduce friction and wear and improve the smoothness of shifting.
Be careful not to over-lubricate to avoid attracting more dirt.
3. Check and adjust the transmission system:
Check the position and adjustment of the front and rear derailleurs to make sure the chain switches smoothly between sprockets.
Adjust the derailleur's limit screw as needed to prevent the chain from falling off or getting stuck between the sprockets.
4. Check bolts and fasteners:
Regularly check whether the bolts and fasteners on the crank and sprocket are loose or damaged, and tighten or replace them if necessary.
5. Replace worn parts:
Sprockets and chains will wear out after prolonged use and should be checked regularly for wear.
If the sprocket tooth shape is found to be severely worn or the chain is too stretched, it should be replaced in time to avoid affecting the transmission performance and riding safety.
6. Check crank bearings regularly:
The crank bearing is an important part of the crank rotation and should be checked regularly to see if it is loose or worn.
If any abnormalities are found, they should be adjusted or replaced in time.
7. Storage precautions:
When the bicycle is not used for an extended period of time, it should be stored in a dry, ventilated place away from direct sunlight and moisture.
A thin layer of anti-rust oil can be applied to the sprocket and chain to prevent rust.
Please note that correct maintenance and upkeep can not only extend the service life of your MTB Bike Double Chainwheel & Crank Set, but also improve your riding experience and safety. It is recommended to consult your bicycle maintenance manual regularly or consult a professional technician for more detailed guidance and advice.