Carbon World Carbon Crank Manufacturer in China
The carbon crank is a key component in a bicycle's transmission system, connecting the chainrings to the pedals and transferring the rider's pedaling force to the chain. Made of carbon fiber, it helps improve acceleration and handling, resulting in a lighter feel. Carbon fiber cranks are a popular choice in the bicycle industry for their strength and durability.
Carbon World's carbon fiber cranks are extremely lightweight and durable, and we can design and manufacture cranks to meet your specific needs.
•Material: Toray Carbon Fiber 700/800/1000 (selectable upon request)
•Length Options: 165 mm / 170 mm / 172.5 mm / 175 mm/customized
•Weight: Different sizes and weights available
•Finish: Matte/glossy
•Compatibility: Customizable upon request
•Type: Carbon mtb cranks, carbon road bike cranks
•ODM and OEM options available
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•Model: MYB09CKR01-150
•Material: Carbon Fiber
•Axle: DUB29
•Axle Material: 7075 Aluminum Alloy
•Crank Lengths: 162.5/165/167.5/170/172.5/175mm
•Crank Claw Sizes: 11OBCD*4, 11OBCD*5
•Compatible Chainrings: 48-35/50-34/52-36/54-40 (10-12 Speed)
•Q-Factor: 150mm
•Compatible Bottom Brackets: PF86/BB30/PF30/BBright/BB386/T47
•Power Meter Compatibility: XCADEY EASTONSIGEYI (Interface Customizable upon Request)
•Weight: 369±5g (excluding claws)
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•Model: MYB09CKR02-147
•Material: Carbon Fiber
•Axle: DUB29
•Axle Material: 7075 Aluminum Alloy
•Crank Lengths: 162.5/165/167.5/170/172.5/175mm
•Crank Claw Sizes: 110BCD*4, 110BCD*5
•Compatible Chainrings: 48-35/50-34/52-36/54-40 (10-12 Speed)
•Q-Factor: 147mm
•Compatible Bottom Brackets: PF86/BB30/PF30/BBright/BB386/T47
•Power Meter Compatibility: XCADEY EASTONSIGEYI (Interface Customizable upon Request)
•Weight: 378±5g (excluding claws)
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•Model:MYB09CKR03-149
•Material: Carbon Fiber
•Axle: DUB29
•Axle Material: 7075 Aluminum Alloy
•Crank Lengths: 162.5/165/167.5/170/172.5/175mm
•Crankset Size: 110BCD*4
•Compatible Chainrings: 48-35/50-34/52-36/54-40 (10-12 Speed)
•Q-Factor: 149mm
•Compatible Bottom Brackets: PF86/BB30/PF30/BBright/BB386/T47
•Power Meter Compatibility: XCADEY EASTON SIGEYI (Interface Customizable upon Request)
•Weight: 414±5g (excluding claws)
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•Material: Carbon Fiber
•Axle: DUB29
•Axle Material: 7075 Aluminum Alloy
•Crank Lengths: 162.5/165/167.5/170/172.5/175mm
•Crankset Size: 104BCD*4
•Compatible Chainrings: 42T/36T/24T (9-11 Speed)
•Q-FACTOR: 172mm
•Compatible Bottom Brackets: PF86/BB30/PF30/BBright/BB386/T47
•Power Meter Compatibility: XCADEY EASTON SIGEYI (Interface Customizable)
•Weight: 379±5g (excluding claws)
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Key Feature of Carbon Crank
Extreme Lightweight: Carbon fiber has a much lower density than metal, reducing the overall weight of the bicycle and directly improving acceleration and handling.
High Stiffness: Carbon fiber's exceptional stiffness means minimal crank arm deflection (bending or twisting) during heavy pedaling, ensuring every ounce of energy is transferred directly to the drivetrain.
Excellent Shock Absorption: Carbon fiber composites have excellent damping properties, absorbing even the slightest vibrations from the road. This improves comfort and reduces fatigue during long rides.
Long-Lasting Durability: Each crank arm undergoes rigorous laboratory testing to ensure durability against fatigue, impact, and repeated stress.
Highly Flexible: Carbon fiber can be molded into highly complex, streamlined shapes for more aerodynamic designs.
Specifications of Carbon Crank Arm
| ● Carbon Crank Arm | |
| ● Model | MYB09170-700C |
| ● Material | Toray Carbon Fiber 700/800/1000 (selectable upon request) |
| ● Length Options | 165 mm / 170 mm / 172.5 mm / 175 mm/customized |
| ● Weight | Different sizes and weights available |
| ● Finish | Matte/glossy |
| ● Compatibility | Customizable upon request |
| ● Type | Carbon MTB cranks, carbon road bike cranks |
| ● ODM and OEM options available | |
Carbon Fiber Crank Manufacturing Process:
Carbon Fiber Cloth (Prepreg): Carbon fiber filaments are woven into cloth and pre-soaked in epoxy resin.
Mold Lamination: Workers lay multiple layers of carbon cloth in the mold according to the designed orientation and angles to ensure the desired strength and rigidity in all directions.
High-Temperature and High-Pressure Curing: The mold with the carbon cloth is placed in an autoclave, where the resin cures under high temperature and pressure, forming a solid, one-piece structure.
Post-Processing: After removal, the mold undergoes trimming, sanding, drilling (for metal insert installation), and painting.
Carbon Fiber Crank Performance Testing
Fatigue Test: According to ISO 4210-8 (Requirements for crankshafts/crankshaft assemblies), the fatigue (repetitive load) test for crankshafts typically requires 100,000 cycles with a load of 180 kg.
Torsional Stiffness Test: A crankarm is fixed at one end, a rotational torque is applied to the other end, and the resulting twist angle is measured. The higher the torsional stiffness, the less energy is lost during heavy pedaling, resulting in more direct power transmission.
Impact Test: A heavy hammer is struck against the crankarm from a certain height and angle, simulating a fall or collision. This tests the carbon fiber material's resistance to impact and knocks.
Carbon vs Aluminum Crank Arms
|
Feature |
Carbon Crank Arm |
Aluminum Crank Arm |
|
Weight |
Much lighter, ideal for climbing |
Heavier, may reduce climbing efficiency |
|
Stiffness |
High stiffness for maximum power transfer |
Moderate stiffness, some energy loss |
|
Durability |
Fatigue-tested, long-lasting under repeated stress |
Durable but may wear faster under extreme use |
|
Vibration |
Absorbs vibrations, more comfortable ride |
Transmits more vibration to rider |
|
Price |
Higher upfront cost, long-term performance advantage |
Lower upfront cost |
Carbon Fiber Crank Weight
3K Carbon Fiber Cranks 165MM
3k Carbon Fiber Cranks 170MM
3k Carbon Fiber Cranks 1725MM
Gloss Carbon Fiber Cranks 165MM
Gloss Carbon Fiber Cranks 170MM
Gloss Carbon Fiber Cranks 1725MM
The weights shown above are based on actual scale measurements for each crank length and surface finish. While the overall structure of the crank arms remains consistent, small differences in length and coating can lead to slight variations in total weight. These differences are normal and reflect structural reinforcement rather than inconsistency.
For the 3K carbon weave finish, the 165mm, 170mm, and 172.5mm versions are all measured at approximately 258 grams per pair. This consistency comes from a uniform internal layup design that maintains stiffness and strength across sizes. The outer 3K surface mainly affects appearance rather than structural mass.
For the gloss finish, the 165mm version weighs about 258 grams, the 170mm version around 260 grams, and the 172.5mm version approximately 264 grams. The slight increase in weight on longer crank arms is due to the additional carbon material required to maintain rigidity and load resistance over a longer leverage distance.
Carbon Fiber Crank Display
Custom Packaging Services for Carbon Fiber Components
At CarbonWorld, we firmly believe that product protection is just as critical as product performance. Every carbon fiber component is meticulously packaged using our custom-designed packaging system to ensure maximum security throughout the shipping and delivery process.
Inside the shipping box, high-density protective foam is precision-cut to perfectly contour to the shape of each individual component; this not only holds each part securely in place but also effectively prevents shifting or surface damage during transit. Whether it is a crankset or a small accessory, every detail is thoughtfully arranged to balance optimal protection with ease of access.
The outer carton is constructed from robust, durable Kraft paper, offering exceptional resistance to compression and impact during shipping. This ensures that your products arrive in pristine condition—remaining as flawless as the moment they left our facility—and are ready for immediate installation or distribution.
In addition to our standard packaging, CarbonWorld also offers customized packaging solutions tailored to meet the specific requirements of diverse markets and brand positioning strategies.
Why Choose Carbon World?
Carbon World operates its own factory, ensuring strict control over the production process and ensuring the consistent and reliable quality of each carbon fiber crank arm. Our cranks maintain high rigidity while reducing weight, providing riders with easier climbing and more efficient power transfer. Compared to mass-produced products on the market, our carbon fiber cranks offer superior performance at a competitive price. To meet diverse riding needs, our cranks can be customized to meet specific requirements, including length, finish, and compatibility. Each product comes with a comprehensive warranty and responsive customer support. Choosing Carbon World means you'll enjoy high-performance, reliable, and durable carbon fiber crank arms, bringing real value and a professional experience to your bike upgrade.
FAQ
Q: Are carbon fiber cranks suitable for mountain biking or racing?
A: Yes. High-quality carbon fiber cranks can withstand the stresses of road racing, cross-country biking, and enduro mountain biking, but proper installation and routine maintenance are crucial to ensure longevity.
Q: How much weight can carbon fiber cranks save?
A: Compared to aluminum cranks, a set of carbon fiber cranks typically saves approximately 100–200 grams, depending on the model.
Q: Are carbon fiber cranks compatible with all bottom brackets?
A: This depends on the crank and bottom bracket type. Please check the crank specifications to determine which bottom bracket standard is compatible (e.g., BB30, BSA, PF30).
Q: Do carbon fiber cranks require special maintenance?
A: Basic maintenance is the same as for conventional cranks: torque bolts according to the manufacturer's instructions, inspect regularly for cracks, avoid overtightening, and avoid using abrasive cleaners.
Leading carbon fiber crank manufacturer and supplier in China, specializing in high-quality carbon fiber products with OEM/ODM services. Our factory offers carbon bike rims, fairings, and custom carbon fiber solutions for sports, automotive, and industrial use. Contact us for a quote.
