3-Speed Bicycle Gear Smooth Gear Shifting Gear Hub Spiral Gear
What are the characteristics of three-speed bicycle gears?
Three-speed bicycle gears, also known as internal gear hubs, possess several characteristics that make them popular among cyclists.
Gear Range: Three-speed bicycle gears provide a range of gear ratios that allow riders to adjust their pedaling effort to different terrains and riding conditions. The gear range typically includes a low gear for climbing steep hills, a medium gear for normal riding on flat surfaces, and a high gear for faster speeds or downhill riding.
Internal Gear Hub: Three-speed gears are housed within the rear hub of the bicycle wheel, making them more protected and less exposed to external elements. This design increases the durability of the gears and reduces the risk of damage from impacts or accidental contact.
Ease of Use: Three-speed gears are known for their user-friendly operation. Shifting between gears is usually accomplished with a twist grip or a thumb shifter, allowing riders to change gears easily and quickly, even while riding. This simplicity makes them suitable for riders of varying skill levels.
Low Maintenance: Internal gear hubs require less maintenance compared to external gear systems. The enclosed design protects the gears from dirt, dust, and moisture, resulting in reduced wear and the need for less frequent cleaning and lubrication. This characteristic makes three-speed gears a convenient choice for cyclists seeking low-maintenance options.
Why choose us?
1.Internationally, power transmission gear devices are developing in the direction of miniaturization, high speed, and standardization. We are experts dedicated to high-quality small module gears. Our factory was founded in 1994 and has 30 years of industry experience.
2.Our company currently has one doctorate (member of the China Gear Standardization Technical Committee) and one graduate student engaged in bevel gear research. We have a complete set of software for digital closed-loop manufacturing of spiral bevel gears, specializing in gear R&D, design, strength verification and high-precision gear manufacturing.
3.Our company has a complete set of advanced production equipment and testing equipment such as multiple CNC 7-axis 5-linkage spiral bevel gear grinding and gear milling machines. It has successively developed high-quality products for users such as high reduction ratio, high speed, heavy load, low noise, and low number of teeth, which can meet the high-quality gear needs of industries such as reducers, industrial robots, industrial sewing machines, and model aircraft.
| 3-Speed Bicycle Gear Smooth Gear Shifting Gear Hub Spiral Gear |
| Specification |
| Material |
20CrMnTi,42CrMo, 45# etc |
| Shape |
Spiral |
| Hardness |
Hardened |
| Surface |
Bright |
| Pressure Angle |
20°, also can be customized |
| Accuracy Grade |
ISO 6-7 Grade |
| Module (M) |
≤4 |
| Heat Treatment |
Carburizing, quenching, carbonitriding, high-frequency, quenching, tempering etc. |
| Processing |
Cutting, hobbing, shaping, broaching. |
| Application |
Bicycles |
Advanced manufacturing equipment
DH has multiple CNC 7-axis 5-linkage spiral bevel gear grinding machines and gear milling machines that can process high-reduction ratio hypoid and transverse cured tooth coupling.
Advanced testing equipment
Utilize a high-precision gear measurement center to complete gear pitch accuracy detection, tooth profile error detection and inverse correction of tooth profile errors.
Professional software
Our factory has a complete set of software to realize digital closed-loop manufacturing of spiral bevel gears, Functions such as gear design, strength calculation, contact analysis, tool calculation, tooth profile error reversal, etc. can be realized. Machining methods include five tools machining(fixed setting) & G-plete of tapper , spiral format tilt(SFT) method & hypoid format tilt (HFT) method of Cycloid equidep, etc.
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