Drive Bevel Gear Compact Design Transmission Grinding Machined Bicycle Parts

Drive Bevel Gear Compact Design Transmission Grinding Machined Bicycle Parts

The application of bevel gears in three-speed bicycles is mainly reflected in the internal gear transmission system, especially for changing the transmission direction and speed ratio. Here are some specific application details:

• Changing the direction of transmission: In the rear hub of an internal three-speed bike, bevel gears are used to change the direction of rotation of the drive shaft by 90 degrees to facilitate the transfer of power to the wheels. This design allows the bike to deliver power while maintaining a compact rear wheel layout.
• Speed Ratio Adjustment: At the heart of the inner three-speed system is a planetary gear set in which the bevel gears, as part of the planetary gears, interact with the sun gears and ring gears to provide different speed ratios. When the rider shifts gears via the shift lever, the clutch inside adjusts the position of the planetary gears, which changes the gear ratio.
• Compact design: The design of the bevel gears allows for efficient power transmission in a limited space. Since the diameter of the bevel gears gradually increases from the center outward, they can provide a larger gear ratio in a smaller space.

Our company was formerly known as Changsha Double Star Gear Industrial Co., Ltd, which was established in 1994. It is a directly affiliated university-run enterprise founded by Central South University Professor Zeng Tao, the leading expert on spiral bevel gears in China. It was later renamed as Changsha Senjie Gear Co., Ltd (abbreviated as "CSG") in 2016. CSG is a production R&D base specializing in professional design, reserch, manufacture and sales of high-quality small module spiral bevel gears and high reduction hypoid gears and cylindrical gears. In 2023, Hunan Dinghan New Material Technology Co., Ltd. was established as a specialized international export business department. CSG has strong scientific research and development capabilities and is also equipped a full set of advanced equipment including seven-axis five-linkage CNC spiral bevel gear grinding machines and gear milling machines. By making the best use of the scientific and technological achievements and equipment of the Gear Research Institute of Central South University, machanical processing, heat treatment and testing. We have developed high-quality products featuring high reduction, high speed, heavy load, low noise and less teeth for users.

With the quality policy of "scientific and technological innovation, quality first, being first-class firm and customer‘s satisfaction", we have won the trust of well-known domestic and abroad enterprises with stable and excellent quality. It is committed to be a pioneer of the industry of China's small-module spiral bevel gears, and is dedicated to providing service for any related industry requiring industrial robots, CNC turning and milling compound power tool turrets, industrial sewing machines, reducers, bicycles, power tools and aeromodelling. We sincerely look forward to your cooperation!