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.
