Wheelset

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A wheelset is a core component of a bicycle, consisting of four main parts: spokes, rim, tire, and hub. It supports the bicycle’s weight, transmits riding power, and adapts to various road conditions. Spokes reduce aerodynamic drag through bladed or butted designs. Early rims commonly used 32–36 spoke holes, while modern designs gradually reduce the number of holes to achieve lower weight and improved aerodynamic performance. Tires include inner tubes with Presta or Schrader valves, as well as high-end outer tires reinforced with Kevlar puncture-resistant layers.
The evolution of wheelset systems has focused on component optimization. Hubs have transitioned from cup-and-cone designs to cartridge bearing structures to improve rotational smoothness. Spokes now use lightweight materials and drag-reducing cross-sectional profiles. Rims are optimized for different riding conditions by reducing spoke hole counts and refining cross-sectional shapes. Tires continue to evolve through advances in materials and puncture-protection technologies. Rims can be classified into deep-section (aero) rims, which offer strong resistance to longitudinal impacts, and box-section rims, which provide better lateral impact resistance. The cross-section of deep rims leverages aerodynamic principles to reduce air resistance. During assembly, close attention is paid to rim trueness, spoke lacing angles, and balanced spoke tension, ensuring riding stability and efficient power transfer.

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Ningbo Shenglu Bicycle Co., Ltd.
Manufacturing Bicycle Components, Built on Process Control
Ningbo Shenglu Bicycle Co., Ltd. is located in Ningbo City, Zhejiang Province, China. Founded in 1998, our company covers an area of 80,000 square meters. We have always adhered to the corporate culture of "People-oriented, Unity and Progress" and the business philosophy of "providing customers with high-quality products and competitive prices".
After more than 20 years of development, we have grown into a professional manufacturing enterprise with a complete production chain and supporting facilities. Our annual production capacity reaches 15 million pairs of steel hubs and 5 million pieces of freewheels. "SHUNFENG", the core brand of Ningbo Shenglu Bicycle Co., Ltd., has gained a good reputation in the industry.
While providing customers with high-quality services, we also attach great importance to improving our manufacturing capacity. We have a complete in-house production chain, including punching, aluminum forging, CNC machining, cold forging, blackening and phosphating, aluminum oxidation, CP and ED plating, heat treatment, and assembly.

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